Which statement about the effect of anaerobic exercise on muscles is true?
A) It increases the size of muscle fibers by increasing the number of actin and myosin filaments.
B) It increases the number of mitochondria per muscle fiber.
C) It increases the enzymes involved in oxidative production of ATP.
D) It increases the density of capillaries delivering oxygen to the muscles.
E) It increases the production of myoglobin.

Question

Quizplus · Accepted Answer

Anaerobic exercise, such as weightlifting, can increase the size of muscle fibers through a process called hypertrophy, which involves an increase in the number of actin and myosin filaments within each muscle fiber.

Note: Options B, C, D, and E apply to the effects of aerobic exercise on muscles, not anaerobic exercise.

Which Statement About the Effect of Anaerobic Exercise on Muscles