Is Protein Used For Energy?

William Smith is the President / CEO and Founder of the INTRAFITT Corporation which was established in California in 1992. Will has won more than twenty-eight bodybuilding championships and is also known for his role as “THUNDER” on television’s American Gladiator between 1990 – 1992. He is a National and International Speaker on Performance Nutrition and Exercise Science.

Although carbohydrates and fats are the body’s primary fuel source during rest and exercise, amino acids such as Leucin, Isoleucine, Valine and Glutamine are also used for energy purposes especially during long bouts of exercise.  In fact, in the later stages of prolonged endurance exercise, protein may contribute up to 15% of the total energy used by the muscles.  Individual metabolic variables, the nutritional status, biological conditions and behavioral factors will ultimately determine the rate and to what extent amino acids are used for energy during rest and exercise in each individual.

Incomplete Proteins (plant and vegetable derived) are quite different from Complete proteins in a variety of ways and are commonly referred to as protein containing foods because they do not contain adequate levels of all of the nine essential amino acids and because they are usually higher in carbohydrates than they are in protein.  For example, the protein contained in a one and a half ounce serving of pasta equated to approximately six grams of incomplete protein, thirty two grams of carbohydrates and 165 calories.    However in a one and a half ounce chicken breast you will get ten grams of complete protein, zero carbohydrates and only 45 calories.

As you can see, the protein yield in the chicken breast is almost twice as high when compared to the pasta, whereas the calorie yield is nearly 70% lower.  It is important to point out that animal meats are approximately 70% water, which contributes to the low-calorie content on a per ounce basis when compared to that of a carbohydrate rich food.  Perhaps this is one reason why popular diet themes today suggest high-protein/low carbohydrate meal plans to promote weight loss.

In strength and honor,
William (Billy) Smith/aka Thunder of the American Gladiators

Visit us at www.intrafitt.com to purchase your individual nutrition program.  Any questions, I am gladiator@intrafitt.com  Hope to hear from you soon.

Complete Proteins

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It is commonly known among health professionals that complete proteins (animal derived) contain all the nine essential amino acids (valine, leucine, isoleucine, tryptophan, lysine, methionine, histidine phenylalanine, and threonine).  These amino acids are termed essential because the human body cannot biosynthesize them, yet relies on their availability to prevent a number of deficiencies associated with the growth, maintenance and repair of the body proteins.  As a result, the essential amino acids must be supplied to the body via diet, and/or supplementation.  Listed below are a number of different biological proteins that the body must constantly biosyntheisze in order to maintain and regulate the normal day-to-day functioning of the organs and organ systems.  As you will see, dietary protein requirements are based on more than just the need to build and maintain the muscles of the body.

Within the human body, biological proteins are typically classified as one of the following:

Regulatory Proteins:  Enzymes such as the fat-burning enzymes in the mitochondria are necessary for the oxidation of fatty acids.  Hormones such as insulin and growth hormone regulate numerous biological processes and chemical reactions associated with the maintenance, growth and repair of the organs and organ systems.

Transportative Proteins:  Hemoglobin transports oxygen and carbon dioxide in the blood.

Protective Proteins:  Antibodies are the defense mechanisms that destroy antigens and fight infection within the body.

Contractive Proteins:  Actin and Myosin are the contractile proteins in muscle fiber that allow for muscles to contract and move.

Structural Proteins:  Collagen fibers form the structural framework in many parts of the body including the skin, hair and nails.

In strength and honor,
William (Billy) Smith/aka Thunder of the American Gladiators

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Complete Protein vs Incomplete Protein…What is the Difference?

William Smith is the President / CEO and Founder of the INTRAFITT Corporation which was established in California in 1992. Will has won more than twenty-eight bodybuilding championships and is also known for his role as “THUNDER” on television’s American Gladiator between 1990 – 1992. He is a National and International Speaker on Performance Nutrition and Exercise Science.

For the most part, dietary proteins can be divided into two categories; Complete Proteins which are those derived from animal sources such as chicken, fish, eggs, beef, turkey, milk, yogurt, and cheese and Incomplete Proteins such as those derived from plant and vegetable sources including nuts, seeds, rice, pasta and beans.  Quantitatively and qualitatively speaking, complete proteins are superior in amino acid content and bioavailable nitrogen per unit weight than incomplete proteins.  This is important to realize because the role of amino acids in human metabolism is to not only build and maintain the tissues of the body but also to transport, regulate, protect and maintain a variety of other metabolic processes.

Please send all questions to info@intrafitt.com  Join me on Sunday mornings at www.wbt.com at 10 AM EST for my new radio show or log onto to www.intrafitt.com and listen to it 24/7 under Media Center.

In strength and honor,
William Smith/aka Thunder

Next time we will discuss the role that amino acids play in the hormonal regulation of lipolysis and beta-oxidation.