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Bodybuilding And Your Muscle Activity

What happens when a body builder hits the gym? How does the body react when lifting up those reps, set after the other? When a human body is at rest, aerobic activity in the mitochondria is the major source of ATP. During rest, the aerobic combustion in mitochondria has no byproducts or even lactic acid. Actually, the process is so undemanding that most of the time combustion is incomplete.

It's during workouts that the method used to produce ATP varies according to an individual's fitness. The duration of exercises and their intensity amplifies the rate of ATP production. More efficient combustion occurs if there are corresponding energy demands placed on the muscles. But when a body builder engages in low intensity workouts for extended periods, energy is produced aerobically. This is done by combining oxygen with the fats and carbohydrates already accumulated in the body.

When a body builder engages in high intensity workouts for shorter durations, the production of ATP is strained to the point that it can switch from aerobic to anaerobic. At such instances, the body uses Creatine phosphate, phosphagen system or even the anaerobic glycolysis.

Aerobic production of ATP is naturally a very slow process and is only applicable in low intensity workouts. However, though low in intensity, the exercises can be sustained for very long durations. Biochemical analysis of ATP's natural production shows that no waste products are accumulated. But at low intensity exercises, the combustion is better and more efficient that while the body is at rest. Combustion of fats and carbohydrates molecule ratio to that of ATP molecules is very high meaning the number of ATP molecules produced are more per molecule of fat and or carbohydrates.

Most expert trainers recommend that even the most intense training should be broken down to longer durations and less strenuous exercises. When the production of ATP is balanced with the energy demands of the body very little if any byproducts are accumulated. Wastes are efficiently removed to keep the muscles pure and free from toxic effects. As such, a body builder feels no fatigue even though the workout has maximally stimulated the muscles. If on the other hand a body builder insists on high powered workouts in shorter durations, energy demands will make ATP aerobic production more inefficient and even anaerobic. The byproducts are more and the rate of removal can not match the rate of production thereby prompting an accumulation of toxic waste with muscle cells. This accumulation yields fatigue and muscle exhaustion.

Aerobic training at relatively moderate rates allows an efficient and effective delivery of oxygen to mitochondrion sites of muscle cells. This in turn makes aerobic metabolism not only quicker but more efficient. The only limitation here is that the energy production is relatively low and only ideal for low intensity workouts.

This is in complete contrast with what happens when a body builder goes to the max with weight training and power lifting. Aerobic combustion is no longer possible and therefore anaerobic ATP production is called upon to supplement for the energy demands. Anaerobic combustion produces more energy and very quickly such that it can well meet the energy demands of the most strenuous body building workout at any time. A key disadvantage of anaerobic ATP production however, is that a lot of wastes are accumulated in the muscle cells and this in turn amplifies the rate of fatigue. The energy produced in anaerobic combustion can only fuel high intensity exercises for a few minutes.

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