Normally, the body's total expenditure of energy on breathing is about 3%. To what percentage can it increase in highly trained athletes during maximal intensity exercise?
A)5%
B)8%
C)15%
D)18%

Question

Quizplus · Accepted Answer

In a highly trained athlete total expenditure for breathing can increase to as much as 15% while performing maximal intensity exercise. Most people will see an increase up to only about 10% during maximal intensity and up to 5% for moderate level intensity exercise.

Normally, the Body's Total Expenditure of Energy on Breathing Is