Question

What are the contractions that maintain the same tension and shorten the length of the muscle, and are the type most often used in a workout in the gym?

1) Isometric contractions
2) Eccentric contractions
3) Concentric contractions
4) Isotonic contractions

Answer 1

Concentric contractions are the type of contractions that maintain the same tension and shorten the length of the muscle in a workout at the gym.

Step-by-step explanation:

In a workout at the gym, the type of muscle contractions that maintain the same tension and shorten the length of the muscle are concentric contractions. These contractions involve the muscle shortening to move a load. For example, when you lift a hand weight upward with increasing muscle tension, the biceps brachii muscle is contracting concentrically.

Eccentric contractions, on the other hand, occur when the muscle tension diminishes and the muscle lengthens. This is often seen when lowering a weight in a slow and controlled manner. Isometric contractions, where the muscle produces tension without changing the angle of a joint, do not involve any change in the length of the muscle.