The Heart Rate and Ventilatory Responses to a Fixed Submaximal

Multiple Choice

The heart rate and ventilatory responses to a fixed submaximal work rate are lower (i.e. ,lower heart rate and lower minute ventilation) following an endurance training program.This training-induced adaptation is primarily due to changes in the

A) central nervous system.
B) spinal cord.
C) trained skeletal muscles.
D) AV node