Question

An individual who is training to run a marathon might expect ALL BUT ONE of the following changes to occur in her muscle fibers.

A) Increased muscle size
B) Improved endurance
C) Greater resistance to fatigue
D) Decreased mitochondrial density

Answer 1

Training for a marathon can lead to increased muscle size, improved endurance, and greater resistance to fatigue, but not decreased mitochondrial density.

Step-by-step explanation:

An individual who is training to run a marathon can expect several changes to occur in her muscle fibers, such as increased muscle size, improved endurance, and greater resistance to fatigue. However, decreased mitochondrial density is not typically expected.