The Autonomic Nervous System Divisions
The autonomic nervous system (ANS) houses two major divisions, the parasympathetic and the sympathetic division. At most times, the two divisions are antagonists to each other; if the sympathetic division causes excitation, the parasympathetic division will counter-act with an inhibitory effect. This is not always the situation, however. Because the two divisions may work independently, with some structures innervated by one division, and the two divisions may work synergistically, each contributing to one stage of a complex process. Generally speaking, the parasympathetic division is active in rest states, and the sympathetic division “kicks in” during times of exertion, stress, or emergency.
When you are doing a heavy weight lifting session at the gym your sympathetic division is full effect. It is sending signals to your cardiovascular and respiration center of the pons, leading to increased blood pressure, heart rate, breathing rate and depth of respiration, so blood and oxygen delivered to muscles. All of this happens unconsciously; it is and is an involuntary action. During this time also, your digestive system is somewhat inhibited so all of ones energy can be focused at the task at hand. One will also have an increased mental alertness and a state of euphoria. Also, there is a general elevation of muscle tone, so a person looks tense. Finally, the mobilization of energy stores, through an increased breakdown of glycogen in muscle and liver cells and the release of lipids from adipose tissues.
After the workout or cardio session the activity of the sympathetic nervous system decreases and the parasympathetic division comes into play. When you leave the gym and step out into the bright sun (hopefully) the parasympathetic nervous system will cause a constriction of the pupils to inhibit the amount of light entering the eyes. And while on your way back home or wherever, there is secretion of digestive glands, including of hormones that promote nutrient absorption, so the hard worked muscles can recover properly. There is also a constriction of respiratory passageways and reduction in heart rate and force of contraction. All of this aids in you becoming more relaxed.
Like stated, the parasympathetic nervous system focuses on relaxation, food processing and energy absorption. It ahs been called the anabolic system because stimulation leads to a general increase in the nutrient content of th blood.
Kurt Kuhn - www.FUSIONBodybuilding.com
Tuesday, May 29, 2007
Monday, May 14, 2007
The Human Nervous System - PART TWO
The Central Nervous System - The Spinal Cord
The spinal cord attaches to the brainstem providing a critical pathway for the flow of information from the skin, joints and muscles to the brain, and vice versa.
In cross sections of the spinal cord there is a H-shaped center of gray matter. The ventral (anterior) and dorsal (posterior) horns describes the sections of this core. The spinal cord core contains primarily three types of neurons: motor neurons, sensory neurons, and interneurons. The motor neurons (efferent) run through the ventral horn to supply skeletal muscle. Sensory (afferent) nerve fibers enter the spinal cord from the periphery by way of the dorsal horn. The white matter, containing the ascending and descending nerve tracts, surround the gray matter within the cord.
As previously mentioned, information going towards the brain is sensory information, such as touch, taste and also pain. So if you are working out and pull a muscle or drop a 45 lb plate on your small toe the nerves will travel up to the brain via afferent nerve fibers of the spinal and the information will be integrated there. Here the response will be traveling via afferent nerve fibers to produce a motor response.
Ascending Nerve Tracts
Ascending nerve tracts in the spinal cord send sensory information coming from peripheral receptors to the brain for processing. There are three neurons that typically make up sensory pathway.
1) The dorsal root ganglion contains the cell body of the first neuron whose axon relays information into the spinal cord.
2) The cell body of the second neuron lies within the spinal cord itself; its axon passes up the spinal cord to the thalamus.
3) The thalamus contains the third neuron's cell body. The axon of the third neuron passes up to the central command center of the cerebral cortex
Descending Nerve Tracts
Axons from the brain move downward through the spinal cord along two major pathways. The lateral or pyramidal tract activates the skeletal muscle (the muscles that you primarily use when working out). The second pathway named ventromedial or extrapyramidal tract, controls posture and muscle tone via the brainstem.
Kurt Kuhn - www.FUSIONBodybuilding.com
Tuesday, May 08, 2007
The Human Nervous System - PART ONE
Divisions of the Nervous System
The human nervous system has two major divisions:
1) The Central Nervous System (CNS) which is made up of the brain and spinal cord.
2) The Peripheral Nervous System (PNS) division that contains nerves that transmit information to and from the CNS.
From there the PNS is divided into the autonomic nervous system (ANS) which controls involuntary information and it conducts impulses from the CNS to cardiac muscle, smooth muscles (ie. digestive system), and glands. The ANS then gets divided into the sympathetic and parasympathetic nervous system which will be discussed later.
The other partition of the PNS is the somatic nervous system which conducts impulses from the CNS to skeletal muscle.
Both of these divisions play an important role to bodybuilders. It allows us to lift heavy ass weights and digest much needed food.
Breakdown of the Nervous System
The Central Nervous System - The Brain
As previously mentioned the CNS is made up of the brain and spinal cord. The CNS is responsible for integrating, processing, and co-ordination sensory input and motor output. It also plays a role of higher functions, such as intelligence, memory, learning and emotion.
The brain is divided into numerous regions which include the brainstem, cerebellum, diencephalon, telencephalon and the limbic system.
The Brainstem
The brainstem is made up of the medulla oblongata (medulla for short), pons and midbrain. The medulla oblongata is important for relaying sensory information to the thalamus and to other brainstem centers. Also, it contains major centers concerned with the regulation of autonomic function, such as heart rate, blood pressure and the digestive activity. Which all play an important role in the world of gym, the medulla can increase our heart rate so much needed oxygen gets delivered to the muscle and adjusting of blood pressure so we don't faint.
The pons relays sensory information to the cerebellum and thalamus. Also, it is contains subconscious somatic and autonomic motor center. Any motor movements that we don't think about will be sent here.
Cerebellum
The cerebellum functions by complex feedback circuits that monitors and coordinates other areas of the brain and spinal cord that are involved in motor control.. The cerebellum receives motor output signals from the central command in the cortex. This cerebellum, also obtains sensory information from peripheral receptors in muscles, tendons, joins and skin and from visual, auditory, and vestibular end organs. The cerebellum serves as the major comparing, evaluating, and integrating center for postural adjustments, locomotion, maintenance of equilibrium, perceptions of speed of body movement and other diverse reflex functions related to movement. Movements that are first learned by trail and error, like riding a bicycle or proper form of deadlifts or squats, remain coded as coordinated patterns in the cerebellar memory banks. Essentially, this motor control center ?fine tunes? all forms of muscular activity
Diencephalon
The diencephalon is made up of the thalamus and hypothalamus. The thalamus provides the switching and relay centers for both sensory and motor pathways. Ascending sensory information from the spinal cord and cranial nerves (other than olfactory nerves) is processed in the thalamus before the information is relayed to the cerebrum or brain stem. The thalamus also plays an important role in regulating a sleep and wakefulness states and also has a role in controlling arousal, the level of awareness and activity.
The hypothalamus which lies inferior to the thalamus in the cerebrum, controls metabolic and body temperature. It also influences activity of the ANS; it receives regulatory input from the thalamus and responds to the effects of diverse hormones.
Telencephalon
The telencephalon contains the two hemispheres of the cerebral cortex which makes up approximately 40% of the total brain weight. It is divided into four lobes; front, temporal; parietal and occipital. Neurons in the cortex provide specialized sensory motor functions. Deep to each cerebral hemisphere and in close association with the thalamus lie the basal ganglia, which play an important role in control of motor movements.
PART TWO - COMING SOON...
Kurt Kuhn - www.FUSIONBodybuilding.com
The human nervous system has two major divisions:
1) The Central Nervous System (CNS) which is made up of the brain and spinal cord.
2) The Peripheral Nervous System (PNS) division that contains nerves that transmit information to and from the CNS.
From there the PNS is divided into the autonomic nervous system (ANS) which controls involuntary information and it conducts impulses from the CNS to cardiac muscle, smooth muscles (ie. digestive system), and glands. The ANS then gets divided into the sympathetic and parasympathetic nervous system which will be discussed later.
The other partition of the PNS is the somatic nervous system which conducts impulses from the CNS to skeletal muscle.
Both of these divisions play an important role to bodybuilders. It allows us to lift heavy ass weights and digest much needed food.
Breakdown of the Nervous System
The Central Nervous System - The Brain
As previously mentioned the CNS is made up of the brain and spinal cord. The CNS is responsible for integrating, processing, and co-ordination sensory input and motor output. It also plays a role of higher functions, such as intelligence, memory, learning and emotion.
The brain is divided into numerous regions which include the brainstem, cerebellum, diencephalon, telencephalon and the limbic system.
The Brainstem
The brainstem is made up of the medulla oblongata (medulla for short), pons and midbrain. The medulla oblongata is important for relaying sensory information to the thalamus and to other brainstem centers. Also, it contains major centers concerned with the regulation of autonomic function, such as heart rate, blood pressure and the digestive activity. Which all play an important role in the world of gym, the medulla can increase our heart rate so much needed oxygen gets delivered to the muscle and adjusting of blood pressure so we don't faint.
The pons relays sensory information to the cerebellum and thalamus. Also, it is contains subconscious somatic and autonomic motor center. Any motor movements that we don't think about will be sent here.
Cerebellum
The cerebellum functions by complex feedback circuits that monitors and coordinates other areas of the brain and spinal cord that are involved in motor control.. The cerebellum receives motor output signals from the central command in the cortex. This cerebellum, also obtains sensory information from peripheral receptors in muscles, tendons, joins and skin and from visual, auditory, and vestibular end organs. The cerebellum serves as the major comparing, evaluating, and integrating center for postural adjustments, locomotion, maintenance of equilibrium, perceptions of speed of body movement and other diverse reflex functions related to movement. Movements that are first learned by trail and error, like riding a bicycle or proper form of deadlifts or squats, remain coded as coordinated patterns in the cerebellar memory banks. Essentially, this motor control center ?fine tunes? all forms of muscular activity
Diencephalon
The diencephalon is made up of the thalamus and hypothalamus. The thalamus provides the switching and relay centers for both sensory and motor pathways. Ascending sensory information from the spinal cord and cranial nerves (other than olfactory nerves) is processed in the thalamus before the information is relayed to the cerebrum or brain stem. The thalamus also plays an important role in regulating a sleep and wakefulness states and also has a role in controlling arousal, the level of awareness and activity.
The hypothalamus which lies inferior to the thalamus in the cerebrum, controls metabolic and body temperature. It also influences activity of the ANS; it receives regulatory input from the thalamus and responds to the effects of diverse hormones.
Telencephalon
The telencephalon contains the two hemispheres of the cerebral cortex which makes up approximately 40% of the total brain weight. It is divided into four lobes; front, temporal; parietal and occipital. Neurons in the cortex provide specialized sensory motor functions. Deep to each cerebral hemisphere and in close association with the thalamus lie the basal ganglia, which play an important role in control of motor movements.
PART TWO - COMING SOON...
Kurt Kuhn - www.FUSIONBodybuilding.com
Thursday, May 03, 2007
FAME Tickets Special
20% off FAME tickets!
This special promotion is running until May 7th - here is your promo code: YUVP8600
All ticket info can be found here: http://www.wowfame.com/tickets/details.asp?evID=13
This special promotion is running until May 7th - here is your promo code: YUVP8600
All ticket info can be found here: http://www.wowfame.com/tickets/details.asp?evID=13
Wednesday, May 02, 2007
Friday, April 20, 2007
Bench Press Champion – Barry Antoniow
Almost a year ago I received an e-mail and a phone call from this gentleman in Ottawa who is a Powerlifter and member of Ottawa Strong - the powerhouse, Barry Antoniow.
FUSION decided to award him a supplement sponsorship. Right away he found his best gains using PURPLE•K, ZEUS and FUBAR.
Today I am proud to announce that a few weeks ago at the 2007 CPU Nationals, Barry Antoniow took home the Gold Medal. He kicked ass and won the Canadian National Bench Press Championships.
I am honoured to have met Barry and look forward to working with him for year’s to come.
For more information on Barry and Ottawa Strong – please visit www.OttawaStrong.ca.
Congratulations Barry on another Powerful Lift.
Chris Belanger - VP Sales www.FUSIONBodybuilding.com
FUSION decided to award him a supplement sponsorship. Right away he found his best gains using PURPLE•K, ZEUS and FUBAR.
Today I am proud to announce that a few weeks ago at the 2007 CPU Nationals, Barry Antoniow took home the Gold Medal. He kicked ass and won the Canadian National Bench Press Championships.
I am honoured to have met Barry and look forward to working with him for year’s to come.
For more information on Barry and Ottawa Strong – please visit www.OttawaStrong.ca.
Congratulations Barry on another Powerful Lift.
Chris Belanger - VP Sales www.FUSIONBodybuilding.com
Monday, April 09, 2007
Guanidinopropionic Acid and Creatine
Many creatine products on the market right now contain an array of ingredients that theoretically help increase the efficiency of creatine, This can be done by either having creatine easily transported into the cell or a new form of it which will provide you with more energy.
One of these ingredients put into creatine blends is guanidinopropionic acid (GPA). GPA has been added to creatine supplements to help in the aid of insulin function. Generally speaking, the more improved function of insulin, the more energy you will have available and the more anabolic one will be. GPA is a creatine analog. However, GPA can be ergolytic, meaning, it will hinder performance and not increase it.
GPA also has the ability to bind to creatine transporters and block their main function, to allow passage of creatine into the cell. (Brault et al., 2003, Williot et al., 1999) When this happens creatine will not be able to get into various tissues. Thus, a blocked creatine transporter can result in lesser intracellular creatine levels, leading to a decreased performance. The consequences of this will be a diminished contractile force (Eijnde et al., 2004). Along with muscle tissue being affected, GPA also has an influence on brain and heart tissue.
The brain is a very well protected organ, and as in muscle tissue, creatine needs a transporter to gain access to neuronal tissue for it to have a beneficial effect. GPA has been shown to inhibit the creatine transporter, but thankfully the brain has the ability to temporarily recover from the decreases in energy induced by GPA use (Lunardi et al., 2006, O’Groman et al., 1996).
As mentioned previously, GPA can manipulate with heart tissue. Numerous studies showed that intracellular creatine concentrations decreased dramatically, nearly 80%. (Boehm, et al 2003, Horn et al., 2001)
Having both GPA and creatine in the same supplement seems counter-productive. Since GPA has the ability to stop creatine uptake into the cells, which could lead to an overall negative effect. It seems to defeat the purpose of what we are taking creatine for, which is usually to better our performance in the gym.
References:
Boehm E, Chan S, Monfared M, Wallimann T, Clarke K, Neubauer S. Creatine transporter activity and content in the rat heart supplemented by and depleted of creatine. Am J Physiol Endocrinol Metab. 2003 Feb;284(2):E399-406.
Brault J, Abraham K, Terjung.R, Muscle creatine uptake and creatine transporter expression in response to creatine supplementation and depletion. J Appl Physiol. 2003 Jun;94(6):2173-80
Eijne B, Lebacq J, Ramaekers M, Hespel P. Effect of muscle creatine content manipulation on contractile properties of mouse muscles. Muscle Nerve. 2004 Marl29(3):428-35.
Horn M, Remkes H, Stromer H, Dienesch C, Neubauer S. Chronic phosphocreatine depletion by the creatine analogue beta-guanidinopropionate is associated with increased mortality and loss of ATP in rats after myocardial infarction. Circulation. 2001 Oct 9;104(15):1844-9.
Lunardi G, Parodi A, Perasso L, Pohvozcheva A, Scarrone S, Adriano E, Florio T, Gandolf C, Cupello A, Burov S, Balestrin M The creatien transporter mediates the uptake of creatine by brain tissue, but not the uptake of two creatine-derived comounds. Neuroscience. 2006 Nov 3l143(4):991-7
O'Gorman E, Beutner G, Wallimann T, Brdiczka D.. Differential effects of creatine depletion on the regulation of enzyme activities and on creatine-stimulated mitochondrial respiration in skeletal muscle, heart, and brain. 1996 Sep 12;1276(2):161-70.
Willott C, Young M. Leighton B, Kemp G, Boehm, E., Radda G., Clarke K., Creatine uptake in isolated soleus muscle: kinetics and dependence on sodium, but not insulin. Acta Physiol Scand. 1999 June;166(2):99-104.
Kurt Kuhn - www.FUSIONBodybuilding.com
One of these ingredients put into creatine blends is guanidinopropionic acid (GPA). GPA has been added to creatine supplements to help in the aid of insulin function. Generally speaking, the more improved function of insulin, the more energy you will have available and the more anabolic one will be. GPA is a creatine analog. However, GPA can be ergolytic, meaning, it will hinder performance and not increase it.
GPA also has the ability to bind to creatine transporters and block their main function, to allow passage of creatine into the cell. (Brault et al., 2003, Williot et al., 1999) When this happens creatine will not be able to get into various tissues. Thus, a blocked creatine transporter can result in lesser intracellular creatine levels, leading to a decreased performance. The consequences of this will be a diminished contractile force (Eijnde et al., 2004). Along with muscle tissue being affected, GPA also has an influence on brain and heart tissue.
The brain is a very well protected organ, and as in muscle tissue, creatine needs a transporter to gain access to neuronal tissue for it to have a beneficial effect. GPA has been shown to inhibit the creatine transporter, but thankfully the brain has the ability to temporarily recover from the decreases in energy induced by GPA use (Lunardi et al., 2006, O’Groman et al., 1996).
As mentioned previously, GPA can manipulate with heart tissue. Numerous studies showed that intracellular creatine concentrations decreased dramatically, nearly 80%. (Boehm, et al 2003, Horn et al., 2001)
Having both GPA and creatine in the same supplement seems counter-productive. Since GPA has the ability to stop creatine uptake into the cells, which could lead to an overall negative effect. It seems to defeat the purpose of what we are taking creatine for, which is usually to better our performance in the gym.
References:
Boehm E, Chan S, Monfared M, Wallimann T, Clarke K, Neubauer S. Creatine transporter activity and content in the rat heart supplemented by and depleted of creatine. Am J Physiol Endocrinol Metab. 2003 Feb;284(2):E399-406.
Brault J, Abraham K, Terjung.R, Muscle creatine uptake and creatine transporter expression in response to creatine supplementation and depletion. J Appl Physiol. 2003 Jun;94(6):2173-80
Eijne B, Lebacq J, Ramaekers M, Hespel P. Effect of muscle creatine content manipulation on contractile properties of mouse muscles. Muscle Nerve. 2004 Marl29(3):428-35.
Horn M, Remkes H, Stromer H, Dienesch C, Neubauer S. Chronic phosphocreatine depletion by the creatine analogue beta-guanidinopropionate is associated with increased mortality and loss of ATP in rats after myocardial infarction. Circulation. 2001 Oct 9;104(15):1844-9.
Lunardi G, Parodi A, Perasso L, Pohvozcheva A, Scarrone S, Adriano E, Florio T, Gandolf C, Cupello A, Burov S, Balestrin M The creatien transporter mediates the uptake of creatine by brain tissue, but not the uptake of two creatine-derived comounds. Neuroscience. 2006 Nov 3l143(4):991-7
O'Gorman E, Beutner G, Wallimann T, Brdiczka D.. Differential effects of creatine depletion on the regulation of enzyme activities and on creatine-stimulated mitochondrial respiration in skeletal muscle, heart, and brain. 1996 Sep 12;1276(2):161-70.
Willott C, Young M. Leighton B, Kemp G, Boehm, E., Radda G., Clarke K., Creatine uptake in isolated soleus muscle: kinetics and dependence on sodium, but not insulin. Acta Physiol Scand. 1999 June;166(2):99-104.
Kurt Kuhn - www.FUSIONBodybuilding.com
Tuesday, April 03, 2007
Thursday, March 22, 2007
Sequence of a Muscle Contraction
Initiation of a Muscle Contraction
1) A contraction is initiated in the central nervous system, which is composed of the brain and brainstem. The contraction can either be voluntary or involuntary. We will only be focusing on voluntary contractions, which involve skeletal muscle
2) A motor neuron in the ventral (front part) of the spinal cord is activated, and a new action potential is then generated, which is passed outward in the ventral root of the spinal cord.
3) As the action potential travels down the motor neuron axon it arrives at the pre-synaptic terminal
4) The action potential causes voltage-gated Ca2+ channels to open. The causes Ca2+ to enter into the pre-synaptic terminal
5) The rise of intracellular Ca2+ triggers synaptic vesicles filled with acetylcholine (ACh) to pass readily through pre-synaptic membrane into the synaptic cleft.
6) The ACh vesicles travel across the synaptic cleft, which is only 50 nm wide. The bind to acetylcholine receptors, namely nicotinic acetylchoine receptors (nAChR), the nAChR are found within the sacrolemma, which is the outer surface of a muscle cells.
7) An new action potential is then generated and depolarizes the transverse tubules (t-tubules), which lie along the sacrolemma
8) A depolarization of the T-Tubule causes Ca2+ release from the sacroplasmic reticulum (SR)
9) Ca2+ binds to the tropnon-tropomysion complex in the actin filaments. This releases the inhibition that prevented actin from combining with myosin
10) During muscle action, actin combines with myosin-ATP. Action also activates the enzyme myosin ATPase, which then splits ATP. The energy from this reaction produces myosin crossbridge movement and creates tension.
11) ATP binds to the myosin crossbridge; this breaks the actin-myosin bond and allows the crossbridge to dissociate from actin. The filaments then slide past each other and the muscle shortens.
12) Crossbridge activation continues when Ca2+ concentration remains high enough (due to membrane depolarization) to inhibit the troponin-torprmyson system
Contraction Termination
- ACh at the neuromuscular junction is broken down by acetylcholinesterase (AChE), and this terminates the stream of action potentials along the muscle fiber surface.
- The SR ceases to release calcium ions, and immediately starts to uptake all the calcium ions that have been released.
- In the absence of calcium ions, a change in the configuration of troponin and tropomyosin then blocks the action of the myosin molecule heads, and contraction ceases.
- Kurt Kuhn - www.FUSIONBodybuilding.com
1) A contraction is initiated in the central nervous system, which is composed of the brain and brainstem. The contraction can either be voluntary or involuntary. We will only be focusing on voluntary contractions, which involve skeletal muscle
2) A motor neuron in the ventral (front part) of the spinal cord is activated, and a new action potential is then generated, which is passed outward in the ventral root of the spinal cord.
3) As the action potential travels down the motor neuron axon it arrives at the pre-synaptic terminal
4) The action potential causes voltage-gated Ca2+ channels to open. The causes Ca2+ to enter into the pre-synaptic terminal
5) The rise of intracellular Ca2+ triggers synaptic vesicles filled with acetylcholine (ACh) to pass readily through pre-synaptic membrane into the synaptic cleft.
6) The ACh vesicles travel across the synaptic cleft, which is only 50 nm wide. The bind to acetylcholine receptors, namely nicotinic acetylchoine receptors (nAChR), the nAChR are found within the sacrolemma, which is the outer surface of a muscle cells.
7) An new action potential is then generated and depolarizes the transverse tubules (t-tubules), which lie along the sacrolemma
8) A depolarization of the T-Tubule causes Ca2+ release from the sacroplasmic reticulum (SR)
9) Ca2+ binds to the tropnon-tropomysion complex in the actin filaments. This releases the inhibition that prevented actin from combining with myosin
10) During muscle action, actin combines with myosin-ATP. Action also activates the enzyme myosin ATPase, which then splits ATP. The energy from this reaction produces myosin crossbridge movement and creates tension.
11) ATP binds to the myosin crossbridge; this breaks the actin-myosin bond and allows the crossbridge to dissociate from actin. The filaments then slide past each other and the muscle shortens.
12) Crossbridge activation continues when Ca2+ concentration remains high enough (due to membrane depolarization) to inhibit the troponin-torprmyson system
Contraction Termination
- ACh at the neuromuscular junction is broken down by acetylcholinesterase (AChE), and this terminates the stream of action potentials along the muscle fiber surface.
- The SR ceases to release calcium ions, and immediately starts to uptake all the calcium ions that have been released.
- In the absence of calcium ions, a change in the configuration of troponin and tropomyosin then blocks the action of the myosin molecule heads, and contraction ceases.
- Kurt Kuhn - www.FUSIONBodybuilding.com
Monday, March 19, 2007
***WBFF Launch Party*** - April 4th Fluid Nightclub
I hope everyone in the GTA can make this - it's gonna be wicked!!!
WBFF LAUNCH PARTY APRIL 4TH FLUID NIGHTCLUB!
Launch of Paul Dillett's
WBFF - WORLD BODYBUILDING FITNESS FEDERATION
Sponsered By: FAREMON PERFORMANCE APPAREL.
www.FUSIONBodybuilding.com
WBFF LAUNCH PARTY APRIL 4TH FLUID NIGHTCLUB!
Launch of Paul Dillett's
WBFF - WORLD BODYBUILDING FITNESS FEDERATION
Sponsered By: FAREMON PERFORMANCE APPAREL.
www.FUSIONBodybuilding.com
Wednesday, March 14, 2007
What are Decanoate Esters?
There have been new products making there way into the market place containing decanoate esters. I have done my own investigation and although the intentions of bonding such ingredients such as creatine and other amino acids with decanoate ester sound quite interesting – is it more effective in terms of delivery and is it safe?
I asked a friend of mine – Androgenic - Shawn D. Wells, MPH, RD and Chief Scientific Officer of MAN Sports Inc. to look into this…
***Androgenic Reviews - The Deca Esters***
Chris/Gym God PM'd discussing the validity/efficacy of the decanoate esters. So I decided to turn it into full-blown review as the ******* products are becoming more visible and even had a booth at the Arnold Classic. Let's start of by using the term "deca ester" sure sounds good to the newbie...much like using Test-, -bol, -drol, -strol, or even the classics like "extreme", "X-treme", "hardcore", "ultra", etc.
Back to decanoate. It is an ester that Test or Deca (hence its name...from the nandralone) can be bound to. With test, I talked to Bill Llewelyn last weekend and he stated Cypionate or Enanthate are the best forms for efficacy.
Most steroids are bound to propionate, enanthate, decanoate, cypionate, etc. These slow down the quick release steroids like test. susp. or winstrol that require more frequent injections. Some other IM injection drugs use these esters such as Haldol (psychoactive) or Prolixin (psychoactive).
Decanoic acid is a carboxylic acid (carboxyl group, polar, forms hydrogen bonds with each other, reacts with bases)...when a salt or ester (organic compound in which an organic group replaces the hydrogen in a hydroxyl group) is made it is then called decanoate. Esters are similar to salts except with a general salt it is a cation (+) and anion (-) union. Esters are present all through nature and most of the smells you know from fruits, plants, etc. are the ester molecules.
Now, the question of Creatine bonded to "deca" or other amino acids has been asked. Since more than half of the molecular weight is in fact the decanoate ester and not the creatine...you'd have to hope that this form is more than 2x as effective (and that doesn't factor in cost at all...CM can just be dosed higher for pennies). So, is it more effective? Well, the ester makes it lipophilic (use van de Walls forces and basically its means "likes fat"). Therefore, this specific ester has a longer half-life endogenously due to it being attracted to the fatty tissue/adipose.
OK, now you may be thinking it’s a long acting form of arginine, creatine, or tyrosine. Although, this is a point worth discussing - is that even what you desire? The longer acting it is, the more (dramatically more) would be needed to be dosed to ellicit an acute response such as NO type effects. Besides that issue, if long-acting is what you desire...here's the kicker...
Decanoate, is meant to be injected. All the data I have presented is as such. It is fully illogical to extrapolate those chemical properties of IM medications and steroids to creatine and amino acids take orally. Further, creatine and amino acids have great absorption rates (depending on the scenario endogenously). Its value is poor, its science is worse. You will have to use more than twice as much to get the same effect as creatine monohydrate or Arginine HCL or Tyrosine HCL alone.
Stupid. You betcha. Wait, it gets better. Besides overpaying for oil cans with half as potent pills there's safety issues.
http://www.sciencelab.com/xMSDS-Decanoic_Acid-9923668Here's the MSDS on decanoic acid a.k.a capric acid (not bonded, but then it does become unbonded internally, breaking apart from the creatine, arginine or tyrosine)...so I am unsure as to how much of an issue this is. Further, the MSDS is talking about the acid as a liquid. Nonetheless, it lists it as hazardous to skin, eye, inhalation and ingestion. It says it has proven carcinogenic effects? Hmm.
The LD50 (lethal dose for 50% of the tested animal) is 3-4g/kg or 300-400g. That's extrapolated and not converted for metabolic differences. So, huh, again. This would equate to less than 1kg of creatine decanoate.
I've had trouble finding any of the IM esters toxicity/safety data to extrapolate the consumption of the bound salt. Nevertheless, here we stand.
Why would you use this product at all?
It’s rhetorical and deeply sarcastic. Bottom line is don't use this garbage and be offended that these companies continue to try and scam you.
Shawn D. Wells, MPH, RD Chief Scientific Officer - MAN Sports, Inc.
I asked a friend of mine – Androgenic - Shawn D. Wells, MPH, RD and Chief Scientific Officer of MAN Sports Inc. to look into this…
***Androgenic Reviews - The Deca Esters***
Chris/Gym God PM'd discussing the validity/efficacy of the decanoate esters. So I decided to turn it into full-blown review as the ******* products are becoming more visible and even had a booth at the Arnold Classic. Let's start of by using the term "deca ester" sure sounds good to the newbie...much like using Test-, -bol, -drol, -strol, or even the classics like "extreme", "X-treme", "hardcore", "ultra", etc.
Back to decanoate. It is an ester that Test or Deca (hence its name...from the nandralone) can be bound to. With test, I talked to Bill Llewelyn last weekend and he stated Cypionate or Enanthate are the best forms for efficacy.
Most steroids are bound to propionate, enanthate, decanoate, cypionate, etc. These slow down the quick release steroids like test. susp. or winstrol that require more frequent injections. Some other IM injection drugs use these esters such as Haldol (psychoactive) or Prolixin (psychoactive).
Decanoic acid is a carboxylic acid (carboxyl group, polar, forms hydrogen bonds with each other, reacts with bases)...when a salt or ester (organic compound in which an organic group replaces the hydrogen in a hydroxyl group) is made it is then called decanoate. Esters are similar to salts except with a general salt it is a cation (+) and anion (-) union. Esters are present all through nature and most of the smells you know from fruits, plants, etc. are the ester molecules.
Now, the question of Creatine bonded to "deca" or other amino acids has been asked. Since more than half of the molecular weight is in fact the decanoate ester and not the creatine...you'd have to hope that this form is more than 2x as effective (and that doesn't factor in cost at all...CM can just be dosed higher for pennies). So, is it more effective? Well, the ester makes it lipophilic (use van de Walls forces and basically its means "likes fat"). Therefore, this specific ester has a longer half-life endogenously due to it being attracted to the fatty tissue/adipose.
OK, now you may be thinking it’s a long acting form of arginine, creatine, or tyrosine. Although, this is a point worth discussing - is that even what you desire? The longer acting it is, the more (dramatically more) would be needed to be dosed to ellicit an acute response such as NO type effects. Besides that issue, if long-acting is what you desire...here's the kicker...
Decanoate, is meant to be injected. All the data I have presented is as such. It is fully illogical to extrapolate those chemical properties of IM medications and steroids to creatine and amino acids take orally. Further, creatine and amino acids have great absorption rates (depending on the scenario endogenously). Its value is poor, its science is worse. You will have to use more than twice as much to get the same effect as creatine monohydrate or Arginine HCL or Tyrosine HCL alone.
Stupid. You betcha. Wait, it gets better. Besides overpaying for oil cans with half as potent pills there's safety issues.
http://www.sciencelab.com/xMSDS-Decanoic_Acid-9923668Here's the MSDS on decanoic acid a.k.a capric acid (not bonded, but then it does become unbonded internally, breaking apart from the creatine, arginine or tyrosine)...so I am unsure as to how much of an issue this is. Further, the MSDS is talking about the acid as a liquid. Nonetheless, it lists it as hazardous to skin, eye, inhalation and ingestion. It says it has proven carcinogenic effects? Hmm.
The LD50 (lethal dose for 50% of the tested animal) is 3-4g/kg or 300-400g. That's extrapolated and not converted for metabolic differences. So, huh, again. This would equate to less than 1kg of creatine decanoate.
I've had trouble finding any of the IM esters toxicity/safety data to extrapolate the consumption of the bound salt. Nevertheless, here we stand.
Why would you use this product at all?
It’s rhetorical and deeply sarcastic. Bottom line is don't use this garbage and be offended that these companies continue to try and scam you.
Shawn D. Wells, MPH, RD Chief Scientific Officer - MAN Sports, Inc.
Tuesday, March 13, 2007
Friday, March 09, 2007
CORTISOL - What Bodybuilders Need to Know!
Background Information
Cortisol, also known as the ""stress hormone"", because of its response to stresses such as: emotional, trauma, infection, surgery, and perhaps the most common to bodybuilders, the stress of physical exertion.
Coritsol is a steroid hormone. It is a four ringed structure like testosterone, but has a far different impact on the body. Coritsol, when released into the bloodstream, reacts throughout the body to control the body’s supply of carbohydrates, fats and proteins. It also suppresses the immune system, preparing us to carry on in the face of life’s various stresses.
Coritsol is released by the adrenal cortex, which is located above the kidneys. Parvocellular neurosecertory, cells that are found in the anterior pituitary gland in the brain, control the adrenal cortex and determine whether a stimulus is stressful or not, as defined by the release of cortisol. These neurons lie in the hypothalamus, namely in the periventricular zone of the hypothalamus and release a peptide called corticotropin-releasing hormone (CRH) into the blood. CRH travels the a short distance into the anterior pituitary, where within a small time frame, it stimulates the release of corticotropin, or adrenocorticotropic hormones (ACTH). ACTH enters the blood stream where it stimulates cortisol release.
Blood levels of cortisol are, in general, regulated. As mentioned earlier, cortisol is a steroid, whose precursor is cholesterol. Thus, cortisol is lipophilic, or a "fat-loving" molecule, which can easily pass through membranes and readily cross the blood-brain barrier. In the brain, cortisol interacts with specific receptors that lead to the inhibition of CRH release, ensuring that circulation cortisol levels do not get too high. Interesting enough, neurons with cortisol receptors are found throughout the brain, and not just in the hypothalamus.
Cortisols Effects
Once cortisol is released into the blood stream, it has the potential to decrease amino acid transport into the cell. This decreases anabolism and stimulates protein breakdown, where amino acids are the result, this happens in all cells except the liver. The circulation delivers these freed amino acids to the liver for gluconeogenesis -- the creation of glucose from a non glucose source. Coritsol also serves as an insulin antagonist, by inhibiting glucose uptake and oxidation.
In instances where there are elevated and extended levels of serum cortisol, this can lead to excessive protein breakdown, tissue wasting and negative nitrogen balance. All of which are counter productive to bodybuilders.
Bodybuilders go to the gym to build their muscles, which is named hypertrophy. They must stay in a positive nitrogen balance for muscles to grow. Insulin is also important as it helps drive much needed nutrients into the cell, especially after a workout. There is discussion that two supplements, glutamine and phosphatidylserine are used to produce an anticortisol effect, however, I believe all this comes down to a matter of personal opinion. To keep your cortisol levels low, there are a few choices, two of which are, you could resort to medication or try to stay relatively stress-free. Generally speaking, the less stress there is, the lower your cortisol levels, but keep in mind, there are times when being stress free is difficult, namely after a workout.
- Kurt Kuhn - www.FUSIONBodybuilding.com
Cortisol, also known as the ""stress hormone"", because of its response to stresses such as: emotional, trauma, infection, surgery, and perhaps the most common to bodybuilders, the stress of physical exertion.
Coritsol is a steroid hormone. It is a four ringed structure like testosterone, but has a far different impact on the body. Coritsol, when released into the bloodstream, reacts throughout the body to control the body’s supply of carbohydrates, fats and proteins. It also suppresses the immune system, preparing us to carry on in the face of life’s various stresses.
Coritsol is released by the adrenal cortex, which is located above the kidneys. Parvocellular neurosecertory, cells that are found in the anterior pituitary gland in the brain, control the adrenal cortex and determine whether a stimulus is stressful or not, as defined by the release of cortisol. These neurons lie in the hypothalamus, namely in the periventricular zone of the hypothalamus and release a peptide called corticotropin-releasing hormone (CRH) into the blood. CRH travels the a short distance into the anterior pituitary, where within a small time frame, it stimulates the release of corticotropin, or adrenocorticotropic hormones (ACTH). ACTH enters the blood stream where it stimulates cortisol release.
Blood levels of cortisol are, in general, regulated. As mentioned earlier, cortisol is a steroid, whose precursor is cholesterol. Thus, cortisol is lipophilic, or a "fat-loving" molecule, which can easily pass through membranes and readily cross the blood-brain barrier. In the brain, cortisol interacts with specific receptors that lead to the inhibition of CRH release, ensuring that circulation cortisol levels do not get too high. Interesting enough, neurons with cortisol receptors are found throughout the brain, and not just in the hypothalamus.
Cortisols Effects
Once cortisol is released into the blood stream, it has the potential to decrease amino acid transport into the cell. This decreases anabolism and stimulates protein breakdown, where amino acids are the result, this happens in all cells except the liver. The circulation delivers these freed amino acids to the liver for gluconeogenesis -- the creation of glucose from a non glucose source. Coritsol also serves as an insulin antagonist, by inhibiting glucose uptake and oxidation.
In instances where there are elevated and extended levels of serum cortisol, this can lead to excessive protein breakdown, tissue wasting and negative nitrogen balance. All of which are counter productive to bodybuilders.
Bodybuilders go to the gym to build their muscles, which is named hypertrophy. They must stay in a positive nitrogen balance for muscles to grow. Insulin is also important as it helps drive much needed nutrients into the cell, especially after a workout. There is discussion that two supplements, glutamine and phosphatidylserine are used to produce an anticortisol effect, however, I believe all this comes down to a matter of personal opinion. To keep your cortisol levels low, there are a few choices, two of which are, you could resort to medication or try to stay relatively stress-free. Generally speaking, the less stress there is, the lower your cortisol levels, but keep in mind, there are times when being stress free is difficult, namely after a workout.
- Kurt Kuhn - www.FUSIONBodybuilding.com
Friday, February 23, 2007
Wednesday, February 21, 2007
2007 SABBA Bodybuilding Championships & Bikini Model Search
COMPETITOR INFORMATION for the
THE 1ST ANNUAL GREENE YAK FITNESS MODEL SEARCH
HOST HOTEL: Ramada Hotel
1818 Victoria Avenue
Regina, SK
Reservations: 1-306-569-1666
(refer to “2007 Novice Champs group # 9859) for discount rate)
Please book by March 17th, 2007 to guarantee your rate
WEIGH-INS: 6 pm sharp
Friday March 30th, 2007
University Theater, located in the Dr. William Riddell Center
at the University of Regina
3737 Wascana Parkway
Regina, SK
FINALS: 5 pm
Saturday March 31st, 2007
University Theater, located in the Dr. William Riddell Center
at the University of Regina
3737 Wascana Parkway
Regina, SK
Fitness Model Search Competition Information
This is the 1st ever Greene Yak model search which is perfect for the female who has an athletic physique with possibly (but not mandatory) a modeling background that yields a marketable look. This event is a terrific opportunity in many regards to the competitor. The bar has been raised for this event in that this event is being used as a National Qualifier. Aside from the prestige of winning the 1st ever Greene Yak model search, the winner of the model search will be given the opportunity to represent Canada at the Miss Caribbean Tan International Finals Pageant! That’s right, the winner will receive an all expense paid trip (air, hotel, food) to Mexico for a week to represent Canada for the first time ever!
In the model search you will not be required to perform a gymnastic routine. The model search competition will consist of two (2) rounds:
Round One – sports attire round
In the sports attire round, the competitor may wear any type of athletic clothing that compliments your particular body type. Fitness or gym wear, aerobic wear, sports skirts, workout “booty” shorts are all good examples. All attire must be tasteful with respect to decency. Bare foot or sport shoes are acceptable, but heels are not permitted. The competitor will be judged on an on overall athletic appearance that is naturally obtainable.
Round Two – two piece bikini with high heels
In the two piece bikini round, the competitor will be judged on an on overall athletic appearance that is naturally obtainable as in round one. High heel shoe style and two piece bikini style and color is up to the competitor, however absolutely no G-string or thong bottoms will be allowed. It is important to note that the judges will be presented a different “total package” while wearing a two piece bikini with high heels as opposed to the sports attire round and therefore will be judging with a fresh perspective.
General Model Search Rules and Regulations
*Competitors must have filled out and signed the Model Search entry form and paid the entry fee.
*Hair may be styled as desired, as well as jewelry is allowed as long as not excessive.
*No posing oils or lotions are allowed in any round.
*All two piece bikinis and sport attire must be brought to the weigh-ins. If you do not have it with you, you will be allowed 15 minutes to get it. If not brought in this time frame, you can be disqualified from the competition.
*Numbers must be worn on the left hip in all rounds.
*Depending on the number of competitors, the competition format (for both rounds) are as follows: The competitors will line up at the back of the stage and be called out of the lineup one at a time in which they will have approximately 30 seconds to move around the stage walking the “catwalk”. You may stop, do a ¼ turn, ½ turn, and/or strike a pose in a manner that a runway model would, and in a way that suits and compliments you best. Remember to make sure the judges see you.
* Back Stage: Due to the size of the backstage and change rooms, no one will be allowed to accompany you back stage; friends, coaches, etc. There will be help for the competitors back stage. Security will be present.
*Competitors should be at the venue approximately ½ hour before show time to familiarize yourself with the stage and backstage area.
Note: There will be no pump up weights supplied backstage at the venue. If you require any pump up weights, or rubber resistance bands, you may bring them.
Adrian Burke - www.FUSIONBodybuilding.com
Monday, February 19, 2007
(((CONTEST))) ***FUSION Bodybuilding's TRAIN INSANE Face***
The new FUBAR formula is about to launch - about damn time! To get things going we want you to send us a snap shot of your best TRAIN INSANE face. We are going to give FUBAR samples to everyone who enters AND to the 10 best TRAIN INSANE face's we are going to send you a FREE bottle.
Be part of the insanity – click below for contest conditions: http://forum.bodybuilding.com/showthread.php?t=1483681
Remember to TRAIN INSANE…cuz if you aren’t - someone else is!!!
Chris Belanger – VP Sales - www.FUSIONBodybuilding.com
Be part of the insanity – click below for contest conditions: http://forum.bodybuilding.com/showthread.php?t=1483681
Remember to TRAIN INSANE…cuz if you aren’t - someone else is!!!
Chris Belanger – VP Sales - www.FUSIONBodybuilding.com
Monday, February 12, 2007
HORMONES
Testosterone
Molecular Structure of Testosterone
Testosterone (T) – perhaps one of the most important hormones for bodybuilding, or at least, one of the most common hormones in the human body. T is a primary sex hormone in men, and also highly anabolic. It is also found in women, but to a much lesser degree than men, men create, on average, twenty to thirty more times T than women.
Since T is highly anabolic, this means that it plays a role in “building of”, usually tissues in the body, ie. muscle mass. T also plays a role in protein synthesis which helps you repair muscle after an intense workout. Other anabolic effects with T is strength gain, this is fairly obvious, the more muscle mass you have, the heavier you can lift.
T is a steroid hormone, and like all other steroid hormones cholesterol is one of the precursors for its production. Most of the T in men is made in the testes, but also in smaller quantities in the adrenal cortex, which is found on top of the kidneys. In women, most of the T is synthesized in the ovaries.
In addition to its large role on muscle tissue synthesis, T indirectly affects muscle fiber’s protein content by promoting growth hormone release, which leads to insulin growth factor (IGF) synthesis and release from the liver. T also influences neural receptors to increase neurotransmitter release and initiate structural protein changes that alter the size of the neuromuscular junction, the gap between the pre-synapse and the cellular membrane of the muscle cell. These neural effects increase the force-production capabilities of skeletal muscle, thus more strength.
Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH)
These two hormones are gonadotropic hormones; a hormone released either from the anterior pituitary gland, which is found in the brain. FSH in males stimulates gernminal epithelium growth in the testes to promote sperm devolvement. LH also stimulates the testes to secrete T.
How exercise affects FSH and LH is still unknown, here are inconsistent reports that describe short-term exercise-association release. However, LH release works like a pulse; it has it peaks and low points, thus making it somewhat difficult to separate any specific exercise related changes from a normal pattern. But generally, LH concentration rises before exercise and peaks during recovery.
Growth Hormone, Exercise, and Tissue Synthesis
Growth hormone is a 191 amino acid, single chain polypeptide hormone, which is synthesized, stored and secreted by the cells within the anterior pituitary gland, which stimulates growth and cell reproduction.
Structure of Human Growth Hormone
Short term physical activity stimulates a sharp rise in GH pulse amplitude and the amount of hormone secreted per pulse. More importantly though, exercise stimulates release of GH isoforms with extended half-lifes as compared to normal GH, this will allow for the effects of GH to last longer on target tissues. Some of the most GH release benefits include muscle, bone, and connective tissue growth and remodeling. It also influences the choice of “fuel” during exercise, principally decreasing glucose uptake, increasing free fatty acid mobilization and enhancing liver gluconeogensis (the creation of glycogen). The net metabolic effect on increased exercise-induced GH production preserves plasma glucose concentration for central nervous system and muscle functions. Many of the growth-promoting effects of GH result from actions of an intermediary chemical messenger on different target tissues, rather than direct effect of GH itself. These peptide messengers, produced in the liver, are termed somataodmeials or insulin-like-growth factors because of there similar structure to insulin. These factors exert potent peripheral effects on the motor units of other tissues.
The mechanism on how exercise stimulates GH release to improve protein synthesis, and thus muscle hypertrophy (muscles growing in size), and it’s other effects is unknown. One hypothesis says that exercise directly stimulates GH release, or release of somatomedians from the liver or kidneys, which then in turn stimulates anabolic processes. Exercise also may indirectly affect GH by stimulating the cholinergic pathways to trigger GH release.
Trained and sedentary individual show similar increases in GH concentration when they exercise to exhaustion. In contrast though, the sedentary person maintains higher levels of GH for several hours into recovery. During a standard bout of sub-maximal exercise, sedentary individuals have a greater GH response. Because this absolute sub-maximal exercise level represents greater stress for the less fit person. GH release generally relates more to the relative strenuousness of physical effort.
Insulin-Like Growth Factors (IGF)
IGF’s mediates many of GH’s effects. In response to GH simulation, liver synthesize IGF-1, a 70-amino acid poly peptide and IGF-II (a 67-amino acid polypeptide, the total time for this process that requires 9 – 30 hours. IGF’s travel in the blood attached to one of five types of binding proteins for release as a free hormone to interact with specific receptors. The factors that influence IGF transport include the binding proteins within muscle, nutrition status and plasma insulin levels.
The time required for IGF synthesis to GH stimulation affects any IGF appearance during or immediately following exercise. This suggest that it’s release results from disruption of cells already containing IGF. Also, GH-mediated release of IGF with exercise may reflect a different time course than the typically observed in non-exercise conditions.
Kurt Kuhn - www.FUSIONBodybuilding.com
Molecular Structure of Testosterone
Testosterone (T) – perhaps one of the most important hormones for bodybuilding, or at least, one of the most common hormones in the human body. T is a primary sex hormone in men, and also highly anabolic. It is also found in women, but to a much lesser degree than men, men create, on average, twenty to thirty more times T than women.
Since T is highly anabolic, this means that it plays a role in “building of”, usually tissues in the body, ie. muscle mass. T also plays a role in protein synthesis which helps you repair muscle after an intense workout. Other anabolic effects with T is strength gain, this is fairly obvious, the more muscle mass you have, the heavier you can lift.
T is a steroid hormone, and like all other steroid hormones cholesterol is one of the precursors for its production. Most of the T in men is made in the testes, but also in smaller quantities in the adrenal cortex, which is found on top of the kidneys. In women, most of the T is synthesized in the ovaries.
In addition to its large role on muscle tissue synthesis, T indirectly affects muscle fiber’s protein content by promoting growth hormone release, which leads to insulin growth factor (IGF) synthesis and release from the liver. T also influences neural receptors to increase neurotransmitter release and initiate structural protein changes that alter the size of the neuromuscular junction, the gap between the pre-synapse and the cellular membrane of the muscle cell. These neural effects increase the force-production capabilities of skeletal muscle, thus more strength.
Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH)
These two hormones are gonadotropic hormones; a hormone released either from the anterior pituitary gland, which is found in the brain. FSH in males stimulates gernminal epithelium growth in the testes to promote sperm devolvement. LH also stimulates the testes to secrete T.
How exercise affects FSH and LH is still unknown, here are inconsistent reports that describe short-term exercise-association release. However, LH release works like a pulse; it has it peaks and low points, thus making it somewhat difficult to separate any specific exercise related changes from a normal pattern. But generally, LH concentration rises before exercise and peaks during recovery.
Growth Hormone, Exercise, and Tissue Synthesis
Growth hormone is a 191 amino acid, single chain polypeptide hormone, which is synthesized, stored and secreted by the cells within the anterior pituitary gland, which stimulates growth and cell reproduction.
Structure of Human Growth Hormone
Short term physical activity stimulates a sharp rise in GH pulse amplitude and the amount of hormone secreted per pulse. More importantly though, exercise stimulates release of GH isoforms with extended half-lifes as compared to normal GH, this will allow for the effects of GH to last longer on target tissues. Some of the most GH release benefits include muscle, bone, and connective tissue growth and remodeling. It also influences the choice of “fuel” during exercise, principally decreasing glucose uptake, increasing free fatty acid mobilization and enhancing liver gluconeogensis (the creation of glycogen). The net metabolic effect on increased exercise-induced GH production preserves plasma glucose concentration for central nervous system and muscle functions. Many of the growth-promoting effects of GH result from actions of an intermediary chemical messenger on different target tissues, rather than direct effect of GH itself. These peptide messengers, produced in the liver, are termed somataodmeials or insulin-like-growth factors because of there similar structure to insulin. These factors exert potent peripheral effects on the motor units of other tissues.
The mechanism on how exercise stimulates GH release to improve protein synthesis, and thus muscle hypertrophy (muscles growing in size), and it’s other effects is unknown. One hypothesis says that exercise directly stimulates GH release, or release of somatomedians from the liver or kidneys, which then in turn stimulates anabolic processes. Exercise also may indirectly affect GH by stimulating the cholinergic pathways to trigger GH release.
Trained and sedentary individual show similar increases in GH concentration when they exercise to exhaustion. In contrast though, the sedentary person maintains higher levels of GH for several hours into recovery. During a standard bout of sub-maximal exercise, sedentary individuals have a greater GH response. Because this absolute sub-maximal exercise level represents greater stress for the less fit person. GH release generally relates more to the relative strenuousness of physical effort.
Insulin-Like Growth Factors (IGF)
IGF’s mediates many of GH’s effects. In response to GH simulation, liver synthesize IGF-1, a 70-amino acid poly peptide and IGF-II (a 67-amino acid polypeptide, the total time for this process that requires 9 – 30 hours. IGF’s travel in the blood attached to one of five types of binding proteins for release as a free hormone to interact with specific receptors. The factors that influence IGF transport include the binding proteins within muscle, nutrition status and plasma insulin levels.
The time required for IGF synthesis to GH stimulation affects any IGF appearance during or immediately following exercise. This suggest that it’s release results from disruption of cells already containing IGF. Also, GH-mediated release of IGF with exercise may reflect a different time course than the typically observed in non-exercise conditions.
Kurt Kuhn - www.FUSIONBodybuilding.com
Friday, February 02, 2007
Thursday, February 01, 2007
Leucine as a Nutritional Signal
Branched-Chain Amino Acids (Leucine, IsoLeucine, and Valine) also known as BCAA’s are the building blocks of the body. They make up 35% of your muscle mass and must be present for molecular growth and development to take place. BCAA's act as nitrogen carriers and assist the muscles in synthesizing other amino acids needed for anabolic muscle action.
Over the next little while I will not be discussing the anabolic effects about the BCAA’s but rather discussing the role of one very important BCAA – Leucine.
Leucine
Systematic Name: (S)-2-amino-4-methyl-pentanoic acid
After doing some research I came across an article put together by Susan M. Hutson (Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC 27157) and Robert A. Harris (Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202-5122)
Leucine as a Nutritional Signal
Although the anabolic effects of amino acids originating from dietary protein on protein synthesis and cell function were first reported over 20 year ago, until recently to molecular basis for many of these observations remained elusive. Now there is convincing evidence that amino acids are actually participants in signal transduction pathways, activating in selected cells some of the same signaling cascades as the anabolic hormone insulin.
Activation of signaling pathways is now recognized to be an important non-protein function of amino acids. This can be and often is studied with amino acid mixtures. In most instances, however, the indispensable branch-chain amino acid Leucine can exert the same effects as amino acid mixtures.
Historically, Leucine has always seemed special and more important that the other two branched-chain amino acids, IsoLeucine and Valine. We have long known that Leucine is ketogenic and is specific among the branched-chain amino acids in its ability to stimulate insulin release from the islet cells of the pancreas (Panten et al. 1974).
A paper was put forth, “Regulation of Branched-Chain α-Keto Acid Dehydrogenase Kinase Expression” by Robert A. Harris, reviews the molecular mechanisms by which Leucine catabolism is controlled at the level of the branched-chain α-keto acid dehydrogenase complex. Evidence is presented for nutrient and hormonal regulation of expression of the branched chain α-keto acid dehydrogenase kinase. The hypothesis is put forth the involvement of thyroid hormone in the regulation of the expression of this gene.
A second paper has been put forth, “Function of Leucine in Excitory Neurotransmitter Metabolism in the Central Nervous System” by Susan M. Hutson, addresses the role of branched-chain amino acids in metabolism in the central nervous system. The hypothesis is advanced that branched-chain amino acids have an important role as donors of nitrogen for dispensable amino acid biosynthesis, analogous to their role in glutamine and alanine synthesis in skeletal muscle developed in the 1970s (Odessey et al. 1974, Chang and Goldberg 1978, Garber et al. 1976). Evidence that BCAA nitrogen is required for formation of the neurotransmitter glutamate has been reviewed (Yudkoff et al. 1996, Bixel et al. 1997, Hutson et al. 1998) and new findings on the special role of branched-chain amino acids in neurotransmitter metabolism in the central nervous system are present.
1. Chang T. W., Goldberg A. L. The metabolic fates of amino acids and the formation of glutamine in skeletal muscle. J. Biol. Chem. 1978;253:3685-3693
2. Fajans S. S., Knopf R. F., Floyd J. C., Power L., Conn J. W. The experimental induction in man of sensitivity to leucine hypoglycemia. J. Clin. Invest. 1963;42:216-229
3. Hutson S. M., Berkich D. A., Drown P., Xu B., LaNoue K. F. Role of branched-chain aminotransferase isoenzymes and gabapentin in neurotransmitter metabolism. J. Neurochem. 1998;71:863-874
4. Odessey R., Khairallah E. A., Goldberg A. L. Origin and possible significance of alanine production by skeletal muscle. J. Biol. Chem. 1974;250:290-298
5. Panten U., Christians J., Kriegstein E., Von Poser W., Hasselblatt A. Studies on the mechanism of L-leucine-and alpha-ketoisocaproic acid-induced insulin release from perifused isolated pancreatic islets. Diabetologia 1974;10:149-154
6. Yudkoff M., Daikhin Y., Grunstein L., Nissim I., Stern J., Pleasure D., Nissim I. Astrocyte leucine metabolism: significance of branched-chain amino acid transamination. J. Neurochem. 1996;66:378-385
In conclusion to this article I believe that there is substantial evidence that BCAA’s and specifically Leucine may have an important role on weight loss. I will continue do my research on the metabolic effects of this incredible amino acid and keep you posted with the findings.
Chris Belanger – VP Sales
Over the next little while I will not be discussing the anabolic effects about the BCAA’s but rather discussing the role of one very important BCAA – Leucine.
Leucine
Systematic Name: (S)-2-amino-4-methyl-pentanoic acid
After doing some research I came across an article put together by Susan M. Hutson (Department of Biochemistry, Wake Forest University School of Medicine, Winston-Salem, NC 27157) and Robert A. Harris (Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN 46202-5122)
Leucine as a Nutritional Signal
Although the anabolic effects of amino acids originating from dietary protein on protein synthesis and cell function were first reported over 20 year ago, until recently to molecular basis for many of these observations remained elusive. Now there is convincing evidence that amino acids are actually participants in signal transduction pathways, activating in selected cells some of the same signaling cascades as the anabolic hormone insulin.
Activation of signaling pathways is now recognized to be an important non-protein function of amino acids. This can be and often is studied with amino acid mixtures. In most instances, however, the indispensable branch-chain amino acid Leucine can exert the same effects as amino acid mixtures.
Historically, Leucine has always seemed special and more important that the other two branched-chain amino acids, IsoLeucine and Valine. We have long known that Leucine is ketogenic and is specific among the branched-chain amino acids in its ability to stimulate insulin release from the islet cells of the pancreas (Panten et al. 1974).
A paper was put forth, “Regulation of Branched-Chain α-Keto Acid Dehydrogenase Kinase Expression” by Robert A. Harris, reviews the molecular mechanisms by which Leucine catabolism is controlled at the level of the branched-chain α-keto acid dehydrogenase complex. Evidence is presented for nutrient and hormonal regulation of expression of the branched chain α-keto acid dehydrogenase kinase. The hypothesis is put forth the involvement of thyroid hormone in the regulation of the expression of this gene.
A second paper has been put forth, “Function of Leucine in Excitory Neurotransmitter Metabolism in the Central Nervous System” by Susan M. Hutson, addresses the role of branched-chain amino acids in metabolism in the central nervous system. The hypothesis is advanced that branched-chain amino acids have an important role as donors of nitrogen for dispensable amino acid biosynthesis, analogous to their role in glutamine and alanine synthesis in skeletal muscle developed in the 1970s (Odessey et al. 1974, Chang and Goldberg 1978, Garber et al. 1976). Evidence that BCAA nitrogen is required for formation of the neurotransmitter glutamate has been reviewed (Yudkoff et al. 1996, Bixel et al. 1997, Hutson et al. 1998) and new findings on the special role of branched-chain amino acids in neurotransmitter metabolism in the central nervous system are present.
1. Chang T. W., Goldberg A. L. The metabolic fates of amino acids and the formation of glutamine in skeletal muscle. J. Biol. Chem. 1978;253:3685-3693
2. Fajans S. S., Knopf R. F., Floyd J. C., Power L., Conn J. W. The experimental induction in man of sensitivity to leucine hypoglycemia. J. Clin. Invest. 1963;42:216-229
3. Hutson S. M., Berkich D. A., Drown P., Xu B., LaNoue K. F. Role of branched-chain aminotransferase isoenzymes and gabapentin in neurotransmitter metabolism. J. Neurochem. 1998;71:863-874
4. Odessey R., Khairallah E. A., Goldberg A. L. Origin and possible significance of alanine production by skeletal muscle. J. Biol. Chem. 1974;250:290-298
5. Panten U., Christians J., Kriegstein E., Von Poser W., Hasselblatt A. Studies on the mechanism of L-leucine-and alpha-ketoisocaproic acid-induced insulin release from perifused isolated pancreatic islets. Diabetologia 1974;10:149-154
6. Yudkoff M., Daikhin Y., Grunstein L., Nissim I., Stern J., Pleasure D., Nissim I. Astrocyte leucine metabolism: significance of branched-chain amino acid transamination. J. Neurochem. 1996;66:378-385
In conclusion to this article I believe that there is substantial evidence that BCAA’s and specifically Leucine may have an important role on weight loss. I will continue do my research on the metabolic effects of this incredible amino acid and keep you posted with the findings.
Chris Belanger – VP Sales
Monday, January 22, 2007
What BODYBUILDING's all about!!!
We received this e-mail and I wanted to share it with you. A real inspiration - un-edited:
"Hello my name is Darrell T Banks born July 11 1967 in Brooklyn New York as a child i always had a muscular built at the age of 12 touch my first weight and never put it down
just loved the feeling of blood flow thru my veins as i feel the splendid feeling of being pumped muscles bellies filling like there got to pop from working out so hard!!!!!!! i join my first gym at the age of 13 paradise gym in jamaica queens new york 1980 i was surrounded be old skool muscle heads so i at a early age i knew the mean of NO PAIN NO GAIN i compete in my 1st bodybuilding show at 15 eastern metropolis got 5th place most people would be happy but for me angry at myself meaning i needed to train harder in the gym by the time i was 17th i was winning all teenage shows then i competed in my first open mens show at 18 yrs old i competed in the middle weight class got 2nd at that time i said to myself maybe i can be really good at bodybuilding after i took time of being qualified for nationals need to be bigger i hooked up with a ifbb pro john terrelli at natural physique gym by the time i was 20 i was 5'5 in the 240's getting ready for 1988 nationals for heavyweight class but my life had a dramatic changed july 27 1988 a auto accident i became partially paralized !!!!!!! my dream of being a ifbb pro was gone without a trace but the iron game taught me to never give up !!!!!!!!!
in 1992 i got the fever for powerlifting. lakeshore facility in birmingham alabama sponsored me i got the chance to travel the world competeing in powerlifting won a few shows in the 81kg 181 lbs weight class but now back to my first love bodybuilding but with a slight different twist wheelchair bodybuilding right now getting ready for my 1st show wheelchair bodybuilding nationals in palm beach fl march 10th. The iron game tought me a few things never give up and to try try try again until you get it right!!!!!!! and the weight won't move until you put forth the effort to move it!!!!!!!! Iron game and Life game run on the same princpals! the love the effort the persude and the trill of accomplishment!!!!!!!!! to all my ironheads and Ms ironheads STAY STRONG !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! AND BELIEVE IN YOURSELF!!! IF YOU DON'T WHO WILL!!!!!!!!!!!!!!!!!!!! MUCH LOVE
Darrell"
Now for all the whiners - SHUT UP AND TRAIN!!!
Adrian Burke
"Hello my name is Darrell T Banks born July 11 1967 in Brooklyn New York as a child i always had a muscular built at the age of 12 touch my first weight and never put it down
just loved the feeling of blood flow thru my veins as i feel the splendid feeling of being pumped muscles bellies filling like there got to pop from working out so hard!!!!!!! i join my first gym at the age of 13 paradise gym in jamaica queens new york 1980 i was surrounded be old skool muscle heads so i at a early age i knew the mean of NO PAIN NO GAIN i compete in my 1st bodybuilding show at 15 eastern metropolis got 5th place most people would be happy but for me angry at myself meaning i needed to train harder in the gym by the time i was 17th i was winning all teenage shows then i competed in my first open mens show at 18 yrs old i competed in the middle weight class got 2nd at that time i said to myself maybe i can be really good at bodybuilding after i took time of being qualified for nationals need to be bigger i hooked up with a ifbb pro john terrelli at natural physique gym by the time i was 20 i was 5'5 in the 240's getting ready for 1988 nationals for heavyweight class but my life had a dramatic changed july 27 1988 a auto accident i became partially paralized !!!!!!! my dream of being a ifbb pro was gone without a trace but the iron game taught me to never give up !!!!!!!!!
in 1992 i got the fever for powerlifting. lakeshore facility in birmingham alabama sponsored me i got the chance to travel the world competeing in powerlifting won a few shows in the 81kg 181 lbs weight class but now back to my first love bodybuilding but with a slight different twist wheelchair bodybuilding right now getting ready for my 1st show wheelchair bodybuilding nationals in palm beach fl march 10th. The iron game tought me a few things never give up and to try try try again until you get it right!!!!!!! and the weight won't move until you put forth the effort to move it!!!!!!!! Iron game and Life game run on the same princpals! the love the effort the persude and the trill of accomplishment!!!!!!!!! to all my ironheads and Ms ironheads STAY STRONG !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! AND BELIEVE IN YOURSELF!!! IF YOU DON'T WHO WILL!!!!!!!!!!!!!!!!!!!! MUCH LOVE
Darrell"
Now for all the whiners - SHUT UP AND TRAIN!!!
Adrian Burke
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