The Rose

Can anybody give me the exercise physiology scientific definition for the following:

1) Muscular Power
2) Muscular Hypertrophy
3) Muscular Strength
4) Muscular Endurance

Roses are a woman's best friend!

ponyboy

Here are some basic definitions:

Muscular Power: The ability to exert muscular force quickly. Power = Force X Distance (acceleration / time). The amount of work done per unit of time.

Muscular Strength: The ablility of a muscle or muscle group to exert maximal force against a resistance in a single repetition.

Muscular Endurance: The ability of a muscle or muscle group to repeatedly exert force against a resistance.

Muscle Hypertrophy: An increase in the total contractile protein, an increase in the size and number of myofibrils per fiber, and an increase in the amount of connective tissue surrounding the muscle fibers. In short, muscle fiber growth.

These are pretty universal and can be found in any physiology textbook. These definitions are taken from Plowman and Smith's Exercise Physiology for Health, Fitness and Performance.

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The Rose

Thanks ponyboy!

Roses are a woman's best friend!

coleman

In regard to power, you have to be careful with how interpret the formula. As power is work/time, it is obvious that the quicker you do the lift the more power you exert. But that doesn't result in any extra gain as the same amount of work is done. So don't go out trying to lift as quickly as you can just because it means more power.

For example, if you were to bench press 100 kilograms the metre length of your arms, then the work done is 980 joules. If you lifted this in one second, the power is 980 Watts. If you lifted it in two seconds, 490 Watts. Same energy, different power.