A 15-Year-Old Male Client Has Just Initiated a Strength Training

Multiple Choice

A 15-year-old male client has just initiated a strength training program in a local gym.The client tells the PTA that he feels his strength has increased markedly over the first 3 to 4 weeks of this program.This initial gain is due to what phenomenon?

A) increase of type I fibers
B) improved neuromuscular recruitment
C) increase of type II fibers
D) increase in muscle mass