Question

For the subjects with the greatest max clench force, what types of muscle fibers probably predominate in the forearm?

Answer 1

The forearms have many small muscles with varying fiber types. Most forearm muscles are slow twitch dominant . Slow twitch muscle fibers are difficult to grow because they rely on a rich supply of oxygenated blood called myoglobin.

Forearm muscles are

Brachioradialis - Muscle of the forearm that flexes the forearm at elbow.

Flexors - A group of muscles located on the posterior side of the forearm that are responsible for extension of the wrist and fingers and supination of the forearm.

Extensors - A group of muscles located on the anterior side of the forearm that are largely involved with flexion and pronation of the forearm.

These muscles are very small and thus have a limited potential for growth, their higher composition of slow twitch fibers make them partially stubborn to grow.The forearms muscles can be rather resilient to fatigue which is type l or type ll muscle fiber.