An individual's total number of muscle fibers is a fixed amount by the time of adolescence, but what type of muscular growth changes can still occur beyond this developmental stage?
a. muscle atrophy resulting in increased muscle mass
b. muscle hypertrophy resulting in increased muscle mass
c. no changes are possible to affect muscle growth past puberty except cutting overall body fat percentage for improved appearance of muscle
d. affecting hormonal rates through medical intervention to increase muscle fiber counts
Answer: B