Whether an activity is preferentially fueled by aerobic or anaerobic metabolism primarily depends on:
A)the intensity and duration.
B)environmental conditions such as ambient temperature and relative humidity.
C)the composition of the last meal.
D)All of the above contribute more or less equally in determining fuel usage

Question

Quizplus · Accepted Answer

The primary determinants of whether an activity is fueled by aerobic or anaerobic metabolism are the intensity and duration of the activity. Activities of low intensity and long duration, such as moderate-paced jogging, are primarily fueled by aerobic metabolism, while activities of high intensity and short duration, such as sprinting or weightlifting, are primarily fueled by anaerobic metabolism. Environmental conditions and meal composition may have some impact on fuel usage, but they are not the primary determinants.

Whether an Activity Is Preferentially Fueled by Aerobic or Anaerobic