Saturday, October 30, 2010

DHEA

1. What is it and where does it come from?

DHEA is an acronym for the hormone dehydroepiandrosterone (now you know why people use the acronym.)
Levels of DHEA are quite high at birth, drop during childhood, and peak during young adulthood. The levels continue to drop throughout life.
2. What does it do and what scientific studies give evidence to support this?


DHEA is HOT, and you will see why. When this compound is supplemented, it has been shown to have awesome effects. It has been shown to help people lose weight, burn fat and build muscle.* Dietary supplements of DHEA can help maintain proper levels in the body and can aid a person in their overall well being.*

Is there enough that can be said about DHEA? Apparently not. It may also have positive effects on supporting a healthy immune response and maintaining healthy blood sugar levels that are already within the normal range.*
3. Who needs it and what are some symptoms of deficiency?

Because DHEA levels decrease with age, people above middle age can have incredible results as the studies above have shown. Body builders or athletes can have some of the greatest beneficial results. They can use it to help build strong muscles and lower body fat.* It is also said to help keep the brain clear and the skin smooth as well!*
4. How much should be taken? Are there any side effects?

When used in the correct dosages, DHEA is great. But, with any kind or hormone or compound, when used incorrectly it can cause problems. The exact right dosage may vary with each individual, so consulting a physician is probably a good idea. Women and men over age 60 are commonly prescribed 50mg and 100mg. Obviously since younger people produce more DHEA naturally, they should take less. Pregnant or nursing women should not take it.

Sunday, October 17, 2010

Chest Development

In this article I am going to discuss what I feel is the most effective and growth promoting workout for the chest. The majority of bodybuilders and weight training enthusiasts feel that a chest workout is not considered "complete" without utilizing free-weight barbell press as their primary and core exercise. Many of these individuals also believe that strength is relative to size and are more intrigued by training their egos with heavy poundage they cannot handle instead of utilizing proper form and weight selection and actually stimulating the fibers of the chest to promote growth during recovery time.
Speaking of recovery time, it also amazes me how these selective individuals seem to have the ability to train chest two to three times per week. It makes me wonder what they consider an effective workout. Is it a workout that doesn't promote growth to the chest but makes poundage go up by small increments on a monthly or yearly basis? If this is so, you shouldn't be reading this article. This article if for those who want real chest growth, don't have an ego, and don't get pissed off when they have to sacrifice their "brute poundage" for a more efficient workout.
Stimulating The Chest
The chest workout that I will present is the current chest workout that I have found to be most effective at stimulating the chest. This workout incorporates techniques that many people don't believe in or follow due to observation. I feel that the main reason in which people will not utilize the three techniques that I will discuss is due to the fact that they are too whimsical to endure the pain that these principles are capable of inflicting on the body.
Most bodybuilders and weight trainers would rather use straight sets (which don't cause too much pain on the body), and they would also rather use their heavy poundage that they feel proud of achieving. I mean what is worse than having to drop the weight that you were capable of using and actually suffer while using it? But if you want to have a barrel sized chest with striations and veins running through it, I feel these techniques are the only way to blast the chest enough to get it to that point of growth. The 5 techniques that are used in almost all of my workouts are: pre-exhaust, triple drop sets, and also rest pause, and my two new favorites - super slow, and extreme stretching. Without these techniques I would be lost at a sub-intensity level and not achieve the feeling of accomplishment that I do with these principles.
So now with a simple background on what you will be up for lets introduce the most beneficial workout for the chest. This workout always begins on the Pec-deck fly machine. Why might you ask? Well it is only the best machine to fully isolate the chest and pre-exhaust it to its full extent. Lets paint a picture. Most people on chest day will go straight to the flat press, don't get me wrong its an excellent movement but it has downfalls.
When using the flat barbell press. When you reach failure your triceps andshoulders usually give out before you can fully blast and stimulate the chest. But with pre-exhaust your chest, and only your chest will already be stimulated before you get to the flat press. So back to the workout, my workout partner and I will usually warm up with some light sets before we start to inflict the pain. On this machine, only one working set will be preformed. With the style that it is preformed in you wont want/be able to perform another set in a similar fashion.
The Workout
All right, now lets get this workout going. After a few light warm up sets on the pec-deck we are then ready for our one working set. The style in which the set is preformed is a triple drop set with forced reps and also very slow reps during the set. Now the set has begun, 6 to 8 slow and controlled reps are preformed before I start to reach failure. My partner then steps in and helps me further complete another 2-4 reps. I have just completed the first of the three sets and now the weight stack has been reduced slightly. With no times rest the second set has begun and 4 to 6 slow reps are preformed to failure with an additional 2-4 partner assisted reps.
The stack has then been reduced again and a similar set as the previous is preformed, but this time I like to add some pauses at the stretch and also the contraction. After this triple drop set my chest is on fire and in enough pain to call it quits for the day. But hey, that's just the pre-exhaustion, right?
After your first working set, your chest will be pumped beyond belief and hurting enough to feel like you did a full workout, but we still have to do presses! The next exercise that I use is the Incline smith press. I feel that this hits the chest perfect if you angle it right. After one or two warm-ups we proceed to our (like the pec-deck) one working set, just like the Deck-Deck we are performing a triple drop. With the set begun I hit 4-5 reps with five second negatives, after I reached failure I get 2-3 partner assisted reps.
The weight is dropped, and the same set and rep protocol is preformed until I reach failure. Again the weight is dropped and the same style set is preformed to complete the triple drop.
With my chest destroyed beyond belief I move on to my third and final exercise, which is flat dumbbell pres, rest-pause. This exercise is just like a finishing up for the chest due to the fact that it will be destroyed from the two previous sets. After picking a weight that is moderately heavy I bang out 8-10 reps with five-second negatives, and place them back up on my thighs in a seated position. After 15-20 seconds rest I again proceed to do another set, this time only getting 3-4 reps with five-second negatives. The weight is then rested again and I final set is preformed only getting 2-3 reps and a 20 second hold at mid point at the end, ouch.

Tuesday, October 5, 2010

Organic Foods

one of the biggest difficulties bodybuilders face on a daily basis is the content of their diet. Most often, the term 'diet' is typically misunderstood as the lack of food a person intakes in a day. However, bodybuilders know better.To give credit where credit is due, bodybuilders must be credited with developing thesupplements that exist not only on this website, but in any store which carries the most basic protein powder to the esoteric supplements.Bodybuilding gave birth to a non-existent niche in the food industry, to one of the most lucrative industries in the past decade with no end in sight. As wonderful as it is to go to a store and buy a supplement which will help you achieve your goals, there still is a market that is essential and a worthwhile endeavor for bodybuilders to explore.
Organic foods are perhaps the least of the explored venues to attain good health. By definition, organic foods are those foods which are grown without the use of pesticides - however, this is not always the case.Many national chains claim to carry "organic" foods by simply not using the typical pesticides, yet the national chain uses foods which have been genetically manipulated so as not to need the pesticide. However, this process diminishes the qualitative value of the food. But before I proceed with descriptions of organic foods, let me elaborate the importance of using organic foods.

Advantages Of Organic Foods

Organic foods, such as an organic tomato, have a qualitative value which a commercial tomato could not match. The organically-grown tomato has not had any pesticides used to keep its natural enemies away from them. Typically, organic farmers use a natural pesticide that is safe and does not diminish the quality of the tomato.However, a commercially-grown tomato has lost a great deal of its nutrition because of the pesticides used to keep it safe from its natural enemies.Another reason to eat an organic tomato (or any organic foods for that matter) is that organic food is picked when it is ripe versus the commercial tomato. This may seem like a small issue, but it is perhaps the most important issue which makes organic food a most invaluable tool for bodybuilders.Since organic food is picked when it is ripe, the food has had the ability to absorb all the trace vitamins and minerals which is sadly lacking in commercial foods. Commercial foods are picked when the vegetables are still green and do not have the opportunity to absorb all the trace vitamins and minerals which the soil offers.In essence, all the consumer is getting from the commercial grown food is filler with very little amounts of vitamins and minerals. In contrast, the organic tomato has an enormous amount of nutrition and a taste which the commercially grown tomato will not match.Since the organic tomato has more nutritional value than the commercial tomato, the bodybuilder can benefit from consuming organic food by the body receiving all the vitamins and minerals that the body needs from exertion from strenuous exercise such as weight training.Since the body is receiving all the vitamins and minerals it needs, the recovery time is faster, thus an improved physique in a shorter period of time. This may prompt the question: What about taking a vitamin/mineral supplement? Is that sufficient?Unfortunately no, because a vitamin/mineral supplement has the macro vitamins and minerals, but not the trace vitamins and minerals (generally speaking). This is the beauty of eating organic foods. With organic foods being the cornerstone of your diet, taking a multivitamin is unnecessary.Another benefit of eating organic food is that the body is getting all of the quality of the nutrition without having to eat huge amounts of food, which commercial foods could not match. For example, an organic tomato has the nutritional equivalent of four commercial tomatoes, thus the less amount of food a person has to consume to get all the necessary nutrition.It has been rumored in the organic "underground" that the cause of many of today'smaladies are because of the quality of food keeps diminishing yet the quantity keeps increasing.The increase in quantity of food is increased because of genetically-engineered food, which on the surface may seem like a good idea, but in reality, we are curing a headache by cutting off the head. However, this is a topic for future reading.

Tuesday, September 28, 2010

Chromium

1. What is it and where does it come from?
Chromium Picolinate is thought to be the best source of chromium. Chromium is a trace mineral that is essential to the body's production of insulin.
Insulin is a hormone that stabilizes the body's blood sugar level. Brewer's yeast is considered the best source of chromium; however, foods such as corn-on-the-cob, buckwheat, apples, beets, tomatoes, wheat germ and bran, and sweet potatoes are excellent sources as well. Bodybuilding.com provides high quality chromium supplement.
2. What does it do and what scientific studies give evidence to support this?


Research shows that chromium is an essential part of our diet. Chromium picolinate can have many beneficial results when supplemented. It enhances insulin's effect in the body, improving the uptake of glucose, thereby causing better blood circulation and maintenance of blood sugar level. Gaining energy, burning fat, and building muscle with greater ease are attributed to chromium, to name a few. It assists the body in losing weight by helping it to build muscle to replace fat. Lowering body fat and increasing lean body mass are just a few of the positive properties that chromium picolinate exhibits on the body. Whoa, that is powerful!

Learn more about the benefits of Chromium Picolinate on Clayton South's Health Facts.
3. Who needs it and what are some symptoms of deficiency?

Specific people have been shown to dramatically gain from ingesting chromium picolinate. Research indicates that the majority of people in the United States are chromium deficient. Most people could use chromium in their diets. As chromium levels decrease with age and deficiencies occur with people who do not eat a good balanced diet, chromium picolinate supplementation can be very beneficial. Because processed foods have much of the chromium removed, increasing ones chromium content is recommended to sustain proper glucose levels and gain energy. Anyone who likes to live with energy, burn fat, and increase strength and muscle mass would also do well to supplement with chromium...bodybuilders, that's you!
4. How much should be taken? Are there any side effects?

Research and most literature suggest supplementation of between 50 and 300 mcg to compliment a 2,000-calorie diet is adequate. When taken in such doses, chromium picolinate has not been shown to cause toxicity in humans.

Thursday, September 9, 2010

Back Development

Back development is a key ingredient in the physique of a bodybuilder. One's back is what makes their upper body look enormous and their waist look tiny. The difficult part is finding a program that will develop your back in all areas. This article will discuss my ideas pertaining to building the back in terms of width, thickness, and form.
ANATOMY
The back is a complicated and multi-layered part of your physique. The outer, or visible part of your back consists of the upper, middle and lower trapezius, posterior deltoid, teres major and minor, and the external abdominal oblique. The deeper layers consist of the rhomboids and the erector spinae. This is of course not an all-inclusive list but is sufficient for the purpose of this article.
BACK WIDTH
The width of your back is determined but the size of the latissimus dorsi and the teres major. These are the muscles that are most prominent in the rear lat spread pose. But keep in mind that your lats are displayed with front poses like the front double biceps pose, front lat spread, and abdominals and thighs pose.The exercises that most effectively target these muscles are lat pull downs with a wide overhanded grip. This will hit the upper portion of the lats as well as the teres. You can modify this exercise by using a narrow underhand grip. To hit the lower portion of your lats I suggest doing bent-over bar rows with an underhanded grip. Just make sure you are at approximately a 30 angle from being completely upright. The final exercise I would suggest for this portion of your back would be pullovers either with cables or with a dumbbell.
BACK THICKNESS
Back thickness mostly depends on the size of your erector spinae, middle,lower, and upper trapezius, and posterior deltoid. The posterior deltoid really adds to back thickness front a side position because it makes your overall physique look thicker. Developing this part of your back is perhaps the easiest as far as number of exercises but also the most difficult due to amount of weight needed to stimulate the muscles. Some exercise suggestions for back thickness would be deadlifts, seated cable rows, t-bar rows, hyperextensions, and reverse flyes. For these exercises you really need to focus on high poundage repetitions using compound movements. Compound movements are those which involve numerous muscles in order to balance and support the body during the movement. These exercises also happen to have the highest potential for injury secondary to large muscle groups moving large amounts of weight. Be sure to warm up properly and use perfect form for the deadlifts or you will pay for it in the morning.
EXERCISE FORM
I tend to be a little more lenient when it comes to form on back exercises (with the exception of deadlifts). This is due to the fact that for each exercise you perform you are using more than one group of muscles. The primary muscles are assisted by additional muscles which serve to stabilize your body to properly perform the exercise. These additional muscles are called secondary or stabilizer muscles.
For example, during seated cable rows you are using middle traps, rhomboids, paraspinals, posterior deltoids, and lats. So in order to get the best bang for your buck cheat a little. When I say cheat I am referring to leaning forward approximately 45 before pulling the weight. To finish the movement bring the handle right to your belly button and bring your chest up. This will really help to involve all the groups of muscles.The idea behind this practice is to recruit as many muscles as possible during one movement. It is very difficult to isolate one muscle during most back movements due to the secondary stabilizer muscles.

Monday, August 23, 2010

Amino Acids

The deluge of dietary supplements on the market today provides countless avenues for the fitness enthusiast to achieve their goals. Rather than drawing into a fitness lifestyle through proper nutrition, exercise, and rest, many will turn to dietary supplements as a panacea for all their fitness dreams. With all of the misinformation and empty promises that accompany many products, trying to keep afloat on all of the new breakthroughs can be overwhelming. Protein powders are the original bodybuilding supplement and continue to be a staple in the bodybuilders diet. Unfortunately, many fitness enthusiasts and bodybuilders' love and devotion to protein far surpass their knowledge of how protein works in the body. Why do so many fitness enthusiasts have such a limited understanding of protein and amino acids? We hope that the information in this article will serve as a beacon among the sea of misinformation about protein and amino acids. The ultimate value of a food protein or a protein supplement is in its amino acid composition. Amino acids are the building blocks of protein, and muscle tissue. Many physiological processes relating to bodybuilding from energy, recovery, muscle hypertrophy, fat loss, and strength gains are linked to amino acids. The twenty-three amino acids are the molecular building blocks of protein. The amino acids can be divided into two groups: essential amino acids and non-essential amino acids. The nine essential amino acids are so designated because they must be supplied by the foods we eat. The twelve non-essential amino acids are so designated based on the body ability to synthesize them from other amino acids.
The Different Amino Acids
Essential Amino Acids Nonessential Amino Acids
Histidine Alanine
Isoleucine Arginine
Leucine Aspartic Acid
Lysine Cysteine
Methionine Cystine
Phenylalanine Glutamic Acid
Tryptophan Glutamine
Valine Glycine
Threonine Proline
Serine
Tyrosine
How The Body Handles Protein
The fate of an amino acid after it is transported to the liver is highly dependent on the body needs for that moment. Some amino acids enter the blood stream, where they join amino acids that have been liberated during the constant breakdown and synthesis of body tissue. Other amino acids are used by the liver to manufacture many of the specialized proteins such as liver enzymes, lipoproteins, and the blood protein (albumin). As these amino acids circulate throughout the body, each cell directed by its own DNA blue print, draws from the common pool of available amino acids to synthesize all the numerous proteins required for its functions. In order for protein synthesis to occur, an adequate supply of both essential and non-essential amino acids is vital. If one of the essential amino acids is missing then synthesis is halted. These partially assembled proteins are disassembled and the amino acids returned to the blood. Any amino acids that are not used within a short time can not be stored for future use. They are delivered back to the liver and stripped of their nitrogen. Which is then incorporated into urea and excreted by the kidneys. The remaining protein skeleton will be converted to glucose and burned as energy or converted to fat or glycogen for storage. Although protein synthesis is very important, the body number one priority is to obtain sufficient energy to carry on vital functions such as circulation, respiration and digestion. Therefore, in the absence of adequate dietary carbohydrates and fat calories, the body will break down not only dietary protein but protein in the blood, liver, pancreas, muscles, and other tissues in order to maintain vital organs and functions.
Applications To Bodybuilding
As we have already discussed, the fate of an amino acid after it is transported to the liver is highly dependent upon the body needs at that moment. Immediately after exercise, when the muscle is receptive to nutrients and the blood flow to the exercise muscles remain high; a window of opportunity exists to aid muscular growth and recovery. Unfortunately, a high protein meal will not put significant levels of amino acids into your blood stream until a couple of hours after you eat it, especially if blood flow to the gastrointestinal tract has been diminished by a hard training sessions. The most reliable way to deliver specific amino acids is to administer the particular amino acids themselves through free form amino acids. The value of free form amino acids is first and foremost is that they do not require digestion. They are free of chemical bonds to other molecules and so move quickly through the stomach and into the small intestine, where they are rapidly absorbed into the bloodstream within fifteen minutes. This quick absorption helps prevent muscle catabolism. Without sufficient energy, the human body as discussed above, has the innate ability to break down muscle tissue for use as an energy source during heavy exercise. This process is known as gluconeogenesis, which is the production of glucose from non-carbohydrate sources. The part of the reaction that pertains to our discussion is known as the glucose alanine cycle. During this cycle, BCAAs (three of the essential amino acids: leucine, isoleucine, and valine) are stripped from the muscle tissue and parts of them are converted to the amino acid alanine, which is transported to the liver and converted to glucose. Branched-chained amino acids are metabolized directly in the muscle and can be converted into energy to prevent muscle catabolism. If you supplement with BCAAs the body does not have to break down muscle tissue to derive extra energy. A study conducted at the School of Human Biology, University of Guelph, Ontario, Canada, confirmed that the use of BCAAs (up to 4 grams) during and after exercise could result in a significant reduction of muscle breakdown during exercise. Amino acids are truly the building blocks of muscle tissue and protein. We hope that the article clarifies the importance of amino acid supplementation to your diet as well as reinforce amino acids many physiological contributions to bodybuilding.

Friday, August 20, 2010

Shoulders Pain

Shoulders receive the lion's share of work in the gym. Nearly all upper body routines involve the shoulder to some extent, if only to be held fixed and motionless for the specific movement. Even during leg work, the shoulders are involved with the stacking and unstacking of plates for all the leg routines. Shoulder pain can greatly hamper any training routine and tends to require long periods of time for complete recuperation. Severe injuries can prematurely terminate the careers of professional athletes such as baseball pitchers with rotator cuff problems. For the non-professional athlete, even minor shoulder pain can lead to disturbed sleeping patterns from the inability to find a comfortable position at night. Part I of this two part series will examine shoulder anatomy in sufficient detail to highlight the basis for skeletal variations that can predispose certain individuals to persistent shoulder problems. Part II will go on to present routines for strengthening lesser known shoulder muscles and lifting variations to minimize further trauma. Bear in mind that severe pain, extreme muscle weakness, or inability to perform certain movements may indicate a condition requiring medical attention. Advice presented here should not serve in place of a thorough medical evaluation since certain conditions may require specialized medical intervention or even surgery. Due to its extremely wide range of mobility, the shoulder is one of the most complex joints in the human body. Because of its unusual bone structure and large number of muscle attachments, shoulder pain can be a daunting challenge to most physicians who typically recommend merely rest and anti-inflammatory medications for weeks to months as therapy which may or may not solve the problem. In addition, chronic degenerative changes that accumulate from repeated trauma will likely increase the frequency of shoulder problems for most individuals as they age and continue lifting. While any single article can hardly be exhaustive on the subject of shoulder issues (whole books 16,17 have been devoted to the subject), this discussion will focus on one of the more common problems that results from a combination of unlucky anatomy, undesirable lifting technique, and insufficient attention to auxiliary musculature. The shoulder is the anatomical structure that links the arm with the torso. A wide array of muscles of particular interest to bodybuilders traverse the shoulder including: pecs, lats, delts, and even the biceps. Given that the lats and delts contribute to a wide upper body desirable by bodybuilders, much attention is focused on these muscle groups and considerable stress is applied to the shoulder. Pain and discomfort can dramatically compromise nearly any weightlifting routine. The shoulder as a joint is classically described as a ball and socket (similar in design to the hip joint)1. The ball portion is derived from the end of the upper arm bone, the humerus, and resembles a ball stuck on the end of a long shaft, and is referred to as the humeral head. The socket side is formed from one corner of a roughly triangular flat bone called the shoulder blade (the scapula), that rests over the rib cage, high on the back and extends over the rib cage to the front of the body. The triangular form of the scapula has one side close to the midline of the back with the lower corner angling up towards the shoulder. The third side of the triangle runs parallel to the shoulders across the top. The shoulder blade is thicker in its upper portion than the lower portion, so that the very top of the shoulder blade has a surface (rather than just as edge as with the other two sides of the triangle) with two edges (one towards the body and one away). The top edge pointing away from the body is called the spine and the surface of the top of the shoulder blade is slightly depressed and called the supraspinous fossa (fossa is the technical term for a depression). Moving along the spine towards the shoulder, a bony extension, called the acromion, juts out and arches over the top of the scapula just above the humeral head and can be felt as the bony top of the shoulder. The acromion arches over the top of the scapula from back to front and connects to the collarbone (clavicle) to complete the shoulder girdle. Arising off the top edge opposite the spine, also at the shoulder, across from where the acromion begins and pointing forward over the chest, is a small bony knob called the coracoid process. The short head of the biceps muscles attaches to this piece of bone as well as a small muscle called coracobrachialis and the pectoralis minor muscle (underneath pectoralis major, the main 'pecs'). In addition, a tough ligament connects the coracoid process with the acromion. The socket portion of the scapula that contacts the humerus is called the 'glenoid fossa,' but rather than looking like a true socket, the glenoid fossa is more open with the appearance of a saucer or rather like a golf tee with the humeral head as the golf ball. The reason for the openness is to permit a large range of motion in the joint. The downside to this large range of motion is the propensity of the shoulder to dislocate. A dislocation occurs when the humeral head moves beyond the confines of the glenoid fossa and slips over the lip of the saucer (your golf ball falls off the tee). When any muscle acts across a joint, opposing muscles are contracted as well to stabilize the joint. Imbalances in strength between opposing muscles can potentially lead to injuries. With the shoulder, the anatomy is not as simple as a one dimensional joint (such as the elbow). Movement of the shoulder requires many different muscles to create the movement as well as other muscles to stabilize the shoulder joint. In addition, since the shoulder blade is only attached (by other bones) to the upper arm and collar bone at one end, the blade portion must be held fixed by additional muscles. For example, serratus anterior (best seen in a well muscled, lean individual) is a small group of muscles that arises from the rib cage in front just below the pecs with the muscle bellies extending up and around to the back and disappearing underneath the lats. Serratus anterior attaches to the scapula along the edge closest to the middle of the back. Serratus's job is to prevent the shoulder blade from winging during shoulder movements; in other words, serratus pins the scapula to the back and so serves to stabilize the joint during movements. As discussed above, the shoulder joint has an extremely wide range of motion. A key structure supporting the shoulder joint is the rotator cuff. The rotator cuff is concerned with two major functions, rotating the shoulder and cuffing the joint 5,34. Rotation may not appear as an obvious movement with regard to the shoulder. To visualize shoulder rotation, place your arm at your side and bend the elbow to 90o, as if to shake hands, but maintain the upper arm against your side and keep you palm in (thumb up). Keeping your upper arm against your side, bring your forearm and hand across your body to rest your palm on your stomach. That movement is internal shoulder rotation (the upper arm bone, the humerus, is rotating relative to the shoulder; internal is used to denote a movement towards the midline of the body). A more extreme form of internal rotation is to place the back of your hand on the small of your back, again with your elbow bent at 90o. Now keeping your elbow bent, lift your hand away from your body. One muscle of the rotator cuff, subscapularis arises from the underneath side of the shoulder blade (the side against the rib cage) and attaches to the humerus in such a way as to produce rotation of the humerus when contracted. If the lifting of your hand away from your back produces extreme pain or is simply impossible to perform, injury to this muscle (or a tear in its tendon) may be the source. This problem requires medical attention. The opposite motion to internal rotation is external rotation (rotating your forearm away from your stomach with your upper arm against your side) and is produced by contracting two other muscles of the rotator cuff group, infraspinatus and teres minor. These muscles also arise from the shoulder blade, but on the outer side, and also attach to the humerus. These three muscles are responsible for shoulder rotation, but the rotator cuff complex has four muscles and this is where the cuff component is involved. The fourth muscle is called supraspinatus and arises over the top of the shoulder blade (in the supraspinous fossa) and crosses the shoulder joint traveling underneath the acromion and attaching to the humerus just below the humeral head. Altogether, these four muscles (the three true rotators and supraspinatus) are the innermost set of muscles surrounding the shoulder joint and form a cuff around the joint. Bearing in mind the shallow nature of the glenoid fossa and the propensity for the humeral head to dislocate, the contraction of all four muscles forms a tight wall around the lip of the socket to help hold the humeral head in position (centered in the glenoid fossa) 5. During almost any shoulder movement, these muscles are contracting to stabilize the joint throughout the movement by maintaining the humeral head centered in the glenoid fossa 34. When you throw an object, the entire movement is designed to throw your arm away from your body. The object is thrown because you release your grip on it. Your arm and shoulder joint stay in place because the rotator cuff is holding the upper arm bone in place. This is why rotator cuff injuries are so devastating to baseball pitchers; a strong, intact rotator cuff is needed to allow for high velocity pitches without injuring the shoulder joint. Weakness or worse, injury to the rotator cuff can place undue stress on the shoulder joint during heavy lifting routines (because the humeral head does not stay centered in the glenoid fossa). Strengthening the rotator cuff muscles, particularly the three involved with rotation is straightforward and basically involves movements as described above for internal and external rotation, but with light weights while lying on your side. The remaining muscle, the supraspinatus, is less straightforward and unfortunately, much advice over the years has served to compound problems 30, especially for those who are anatomically predisposed to have problems in the first place.

Thursday, August 12, 2010

Fish Oil

Obesity is of increasing concern in health issues in the world, surpassed only by cancer and heart disease. Dietary fat is often implicated as the primary root cause of the prevalence of obesity in developed countries. However, research continues to mount that support all fat is not evil. While high intakes of saturated fat and cholesterol are highly correlated with obesity, insulin resistance and heart disease, other fats are gaining respect as actually attenuating these factors. The most favorable fat in recent research is fish oil.

What Are The Benefits?

The benefits of a diet comprised mostly of polyunsaturated fats are well documented. The essential fatty acids omega-3, 6, and 9 must be obtained from food sources. These fatty acids are the precursors for several classes of hormones and comprise most of our cell membranes. Studies are now suggesting that the omega-3 fatty acids are our friends in a number of ways. Since our modern diet typically is high in omega-6 fatty acids and low in omega-3 acids, it may prudent to increase our consumption of foods that contain a higher amount of omega-3 fatty acids. The richest source of omega-3 fatty acids is fish oil from cold water fish.
Omega-3 fatty acids improve insulin action and glucose metabolism in fat and muscle cells. The fatty acids in the phospholipid layer of cell membranes determine the physiochemical properties of the membranes. This in turn influences the cellular functions, especially hormone responsiveness. Increasing the membrane content of polyunsaturated fatty acids increases membrane fluidity and the binding of many hormones to their respective receptors, thereby increasing their action.
They also decrease plasma triglyceride levels. This is hypothesized and supported by studies to play a role in increasing insulin action. It involves fuel switching due to increased utilization of glucose. It is also thought that fish oil supplementation reduces insulin secretion.
Another important aspect is that a diet derived mostly of it fatty acids from fish oils (high 0-3:0-6/9) was shown to reduce white adipose tissue mass, or body-fat, significantly. This has been demonstrated repeatedly in rat models, and also in humans. While omega-3's also increased thermogenesis in brown adipose tissue in rats, that probably has less significance for humans. However, they have detected much lower levels of enzyme activity for fatty acid synthesis in fish oil fed rats (and in vitro human fat cells) than in those fed diets with omega-6, omega-9 and saturated fats. Rats fed diets with omega-3 lost more fat mass (and had much lower triglyceride levels) than those fed a low-fat, high carb diet that was matched for calories.
They have shown in both rats and humans that the composition of adipose fatty acids basically resembles the fatty acid composition of the diet. However, those eating diets high in fish oil EPA and DHA (omega-3's) were not stored in the adipose tissue in similar proportion to the concentrations in the diet. Therefore, these fatty acids may be preferentially oxidized and not stored. Thus, such rapid fatty acid oxidation might prevent a significant portion of lipid accumulation.
Other Benefits

The other positive benefit is the consumption of a diet high in 0-3 induced an increase in UCP2 in white adipose tissue. Increased UCP2 uncoupling is associated with reductions in body weight and white adipose tissue.
Interestingly, a reduction of leptin levels, the fat-stat hormone, was reported with high omega-3 consumption. However, as most of the researchers stated in these studies, this may be an artifact simply due to the reduction in fat mass (leptin is secreted by fat cells).
However, in the studies that reported this, they also demonstrated a sustained decrease in appetite and no change in energy expenditure concomitant with decreased leptin levels, which indicates that decreased leptin levels may not be a concern unless they become acutely low, such as in a lean person. In that case, rotation or a blend of fatty acid sources would be necessary. But considering that our diet typically contains a high ratio of o-6:o-3, that may still be a moot point.

Thursday, July 22, 2010

Melatonin

1. What is it and where does it come from?

N-acetyl-5-methoxytryptamine, or melatonin, is hormone produced naturally by the body in the pineal gland of the brain. The release of melatonin correlates with the body's cycle of day and night.
The highest levels of the hormone are produced at night. Trace amounts of melatonin appears in foods.
2. What does it do and what scientific studies give evidence to support this?

Melatonin may play an essential role in sleeping and much more. As light inhibits its production, and darkness stimulates it, melatonin regulates the body's internal clock. Double blind research shows that this hormone helps people sleep, shortens the number of awakenings in the night, and improves the quality of sleep. It is also very useful in treating jet lag, as it promotes quicker recovery from that "out of it" stage one may experience after extended periods of flight. Research has also shown that having enough melatonin exhibits positive psychological benefits on a person's mood.
3. Who needs it and what are some symptoms of deficiency?


Frequent travelers and those who work rotating shifts could benefit by taking melatonin supplements. Sleep is definitely important to weight-trainers, bodybuilders, and athletes, as muscles grow and repair during sleep. Melatonin has been used by millions of people to gain quality rest on a more consistent basis.
4. How much should be taken? Are there any side effects?
Levels of melatonin intake should vary with a person's age. The body produces some melatonin naturally during sleep and many doctors and experts recommend a level similar to the body's own production, between one to three milligrams taken two hours or one-half hour before a person wants to go to sleep. Melatonin should not be taken during the day. Some uncommon side effects are reports of grogginess, sleepwalking, and disorientation. Pregnant or breast-feeding women should not take it. All in all, melatonin has great sleep promoting effects.