Question

While pedaling a cycle ergometer, Rolanda Hooch is consuming 1.4 Liters of oxygen per minute. Her RER is 0.88. Rolanda weighs 44 kg. What is her energy expenditure (kcal) per minute? What percentage of caloric expenditure is coming from fat and carbohydrate? Please show all mathematical work for credit and use proper units of measure.

Answer 1

(a) From the above table the calorific value at 0.88 RER is 4.9 Kcal per liter of oxygen.

therefore for 1.4 L of oxygen the energy expenditure in one minute = 1.4 x 4.9 Kcal

= 6.86 Kcal

(b) From the table:

at 0.88 RER, FAT = 40.8 % calorific value coming from FAT

and Carbohydrate = 59.2 % calorific value coming from Carbohydrate.