Friday, March 4, 2011

All about muscle growth

Increasing the size of muscles by increase muscle cell size (not number of new cells) is called MUSCLE HYPETROPHY

There are two ways in which this could be achieved.

a) sarcoplasmic hypertrophy increases sarcoplasmic fluid in muscles, which increases muscle size but not strength....this is typical for bodybuilders. Low intensity, low resistance, high volume resistance training leads to sarcoplasmic hypertrophy.

b) myofibrillar hypertrophy in which actin and myosin proteins increase in numbers inside muscle cell. They play a role in muscle contraction. This is typical for olympic weight lifters (lesser mass, more stength). High intensity, high resistance, low volume training leads to myofibrillar hypertrophy.

Hypertrophy and Exercise

Aerobic exercises enhance muscle capacity for storing fat and carbohydrates, on the other hand, high intensity anaerobic exercises enhance hypertrophy.

Anaerobic Exercise

Fast twitch skeletal muscles use anaerobic metabolism for functioning.

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