Functional Movement Training with Variable Resistance Machine

How does using a variable resistance machine benefit the biceps?

Is it true that using a variable resistance machine to work the biceps is an example of functional movement training?

Benefits of Using a Variable Resistance Machine for Biceps

Yes, using a variable resistance machine to work the biceps is indeed an example of functional movement training.

Using a variable resistance machine to work the biceps involves concentric and eccentric contractions. In this process, the biceps muscle shortens and lengthens while maintaining constant tension. Such resistance exercises lead to the enlargement of muscles through the increase in myofibrils in the muscle fibers.

Explanation: Using a variable resistance machine to work the biceps involves isotonic contractions, where the tension in the muscle stays constant, and a load is moved as the length of the muscle changes. There are two types of isotonic contractions: concentric and eccentric. A concentric contraction involves the muscle shortening to move a load, such as when the biceps brachii muscle contracts when a hand weight is brought upward with increasing muscle tension. On the contrary, an eccentric contraction occurs as the muscle tension diminishes and the muscle lengthens, like when a hand weight is lowered in a controlled manner. Moreover, resistance exercises require large amounts of FG fibers to produce short, powerful movements resulting in powerful muscle contractions. This exercise aids in increasing the formation of myofibrils, thereby increasing the thickness of muscle fibers leading to muscle hypertrophy, or the enlargement of muscles.