Question

What are the 2 ways in which we grade muscle contraction for different amounts of work, and what does each method involve?

a. Isotonic and isokinetic; involving constant tension and constant speed, respectively
b. Eccentric and concentric; involving lengthening and shortening of muscles, respectively
c. Isometric and isokinetic; involving constant length and constant speed, respectively
d. Isotonic and isometric; involving constant tension and constant length, respectively

Answer 1

There are two ways to grade muscle contraction for different amounts of work: isotonic and isometric contractions. Isotonic contractions involve changes in muscle length while maintaining constant tension. There are two types of isotonic contractions: concentric and eccentric. Isometric contractions involve constant muscle length while generating tension.

Step-by-step explanation:

In muscle contraction, there are two ways to grade the amount of work: isotonic and isometric contractions.

Isotonic contractions involve changes in muscle length while maintaining constant tension. There are two types of isotonic contractions: concentric and eccentric. Concentric contractions occur when the muscle shortens to move a load, while eccentric contractions occur when the muscle lengthens as tension diminishes.

On the other hand, isometric contractions involve constant muscle length while generating tension. The load exceeds the tension the muscle can generate, so there is no change in muscle length.