The changes in the heart rate and ventilatory responses to a fixed submaximal work rate are lower after an endurance training program. These changes are due primarily to changes in the
A) lung and heart.
B) central nervous system.
C) active skeletal muscles.

Question

Quizplus · Accepted Answer

The changes in heart rate and ventilatory responses to a fixed submaximal work rate after an endurance training program are primarily due to changes in the active skeletal muscles. Endurance training improves the muscles' ability to extract and utilize oxygen, reducing the need for an increased heart rate and ventilation during exercise.

The Changes in the Heart Rate and Ventilatory Responses to a Fixed