Question

What are the three types of muscle contractions?

1) Eccentric contraction, Concentric contraction, Isometric contraction
2) Isotonic contraction, Isometric contraction, Eccentric contraction
3) Concentric contraction, Isotonic contraction, Isometric contraction
4) Eccentric contraction, Isotonic contraction, Concentric contraction

Answer 1

There are three types of muscle contractions: Eccentric, where the muscle lengthens; Concentric, where the muscle shortens; and Isometric, where the muscle length does not change but tension is still generated.

Step-by-step explanation:

The three types of muscle contractions are:

1. Eccentric contraction - This occurs when a muscle lengthens while maintaining tension. An example is slowly lowering a hand weight, where the biceps muscle lengthens as it controls the descent of the arm.
2. Concentric contraction - This type involves the muscle shortening to move a load, such as when the biceps muscle contracts to lift a hand weight upwards.
3. Isometric contraction - In this type of contraction, the muscle does not change in length but still generates tension. An example is holding a hand weight steady without moving it.

Therefore, the correct answer is Option 1: Eccentric contraction, Concentric contraction, Isometric contraction.