Question

When a muscle shortens at a constant speed over the full range of motion.

a) Isotonic contraction is when a muscle shortens at a constant speed over the full range of motion.
b) Isometric contraction is when a muscle shortens at a constant speed over the full range of motion.
c) Eccentric contraction is when a muscle shortens at a constant speed over the full range of motion.
d) Concentric contraction is when a muscle shortens at a constant speed over the full range of motion.

Answer 1

In isotonic contractions, the tension in the muscle remains constant while the muscle changes length. There are two types of isotonic contractions: concentric and eccentric.

Step-by-step explanation:

In isotonic contractions, the tension in the muscle remains constant while the muscle changes length. There are two types of isotonic contractions: concentric and eccentric. Concentric contraction occurs when the muscle shortens to move a load, such as the biceps brachii muscle contracting to lift a hand weight. Eccentric contraction occurs when the muscle lengthens while generating tension, as in the controlled lowering of a hand weight.