During exercise of increasing intensity, the SV of normal adults __________.

Question

Quizplus · Accepted Answer

During submaximal exercise of greater than approximately 50% of V02 max, the stroke volume of normal adults remains relatively stable. It may even decrease slightly due to increased heart rate and decreased filling time, but the overall effect is relatively stable SV. Option A is incorrect because SV plateaus or may decrease with more intense exercise beyond a certain point. Option C is incorrect because stroke volume does not continue to increase beyond a certain point and then levels off, but rather plateaus or can even decrease with further increases in exercise intensity. Option D is incorrect because option B is correct.

During Exercise of Increasing Intensity, the SV of Normal Adults