Question

isometric exercise strengthens muscles without ______.
a. contracting muscle fibers
b. changing muscle length
c. burning calories
d. conscious effort

please select the best answer from the choices provided.

○ a
○ b
○ c
○ d

Explanation:

Isometric exercises involve muscle contraction without a change in muscle length (they are static contractions). Option A is incorrect as isometric exercise does contract muscle fibers. Option C is incorrect as exercise burns calories. Option D is incorrect as isometric exercise requires conscious effort. So the correct answer is B.

Answer:

B. changing muscle length