Respuesta :
During high-intensity exercise, the rate of fat oxidation decreases is the true statement. Thus the correct answer is option (B).
The intensity and length of the activity will mostly determine how much fat is used during the workout. Exercise causes a reduction in fat intensity and an increase in fat contribution. For instance, a rise in the utilization of fat as the only energy source starts with low intensity and extremely long duration exercises. Most types of physical activity use the muscle-stored glycogen as their main source of energy. The delivery of the fuel in the form of free fatty acids in the form of fat to the muscle mass takes thirty to sixty minutes.
The proper question is:
Which of the following statements is true?
(A). Phosphocreatine provides about 85% of the energy needed to fuel muscles during endurance physical activities.
(B). During high-intensity exercise, the rate of fat oxidation decreases.
(C). Glucose is the primary fuel for resting muscles.
(D). Amino acids are a major source of energy for contracting muscles.
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