During cycle ergometer exercise,net efficiency decreases as the work rate increases.The mechanism to explain this observation is
A)the relationship between energy expenditure and work rate is curvilinear rather linear.
B)the energy requirement of exercise decreases as work rate increases.
C)that oxygen consumption during exercise decreases over time.
D)None of the above answers are correct

Question

Quizplus · Accepted Answer

As work rate increases, the energy demand of the exercise increases disproportionately to the increase in work rate, resulting in a decrease in net efficiency. This relationship is curvilinear, not linear, meaning that as work rate continues to increase, the energy demand increases at an accelerating rate, resulting in a greater decrease in net efficiency.

During Cycle Ergometer Exercise,net Efficiency Decreases as the Work Rate