4. Low-intensity exercise is often believed to be the optimal "fat-burning" exercise. Using the
data below, calculate the total energy expenditure (kcals), % kcals from fat and CHO, and
total fat and CHO expenditure (g) for a 30 minute exercise bout at 300 kpm/min and 900
kpm/min. Which intensity of exercise had the highest % energy from fat? Which intensity
promoted the expenditure of the greatest g of fat?
300 kpm-min-Ā¹
VO2 = 0.873 Lā«minĀ¹
VCO2 = 0.650 L.minĀ¹
900 kpm-min-Ā¹
VO2 = 2.090 Lā«minĀÆĀ¹
VCO2 = 1.818 L.minĀ¹