Question

1. Calculate daily energy expenditure at rest if V̇O₂ = 0.227 L/min and RER = 0.75.

Answer 1

This is a table of thermal equivalent of O₂ for non protein RER

Now, given RER = 0.75

Therefore, a RER value of 0.75 is the equivalent of 4.739kcal/L (4.739Kcal are liberated on every one litre of oxygen consumed)

Energy expenditure (kcal/min) = VO₂L/min x calorie equivalent = 0.227 L/min x 4.739kcal/L = 1.075753 kcal/min.