Question

1a) Lily (63 kg) is working out at 43.93 mL/kg/min. What is her relative VO2?

1b) Lisa (60 kg) is working out at 17 kcal/min. What is her relative VO2

Answer 1

Relative VO2 is the volume of oxygen consumed in ml per min per kilograms. (ml/kg /min).

Absolute VO2 is amount of oxygen consumed in liters per minute. (L/min).

1a)  Relative VO2= 43.93 mL/ kg/ min. ( For lily).

1b)

kcal/ min = Absolute VO2 ( L/ min) × 5.

17 = Absolute VO2 × 5.

Therefore, Absolute VO2 = 17/5.

Absolute VO2 (L/ min) = Relative VO2 ( ml/ kg/ min)/1000× Total body weight.

That is, 17/5 = Relative VO2/ 1000 × 60.

Relative VO2 = 17/5 × 1000/60 = 56.66 mL/kg/min. ( For Lisa).