During a Bout of High Intensity Exercise (I

Multiple Choice

During a bout of high intensity exercise (i.e. ,10 minutes at 80%VO₂ max) ,the plasma concentration of hormones that stimulate fatty acid mobilization from adipose tissue increase significantly.The plasma-free fatty acid concentration,however,actually decreases.Why does this occur?

A) Fatty acid supply is depleted.
B) Hormones are ineffective in maximal work.
C) Lactic acid interferes with fatty acid mobilization.
D) High insulin levels secreted during maximal exercise interfere with fatty acid mobilization.