Metabolic Consequences of Low Energy Availability in Sport

Question 1

TDEE =

Answer 1

RMR + Thermic effect of food + NEAT + Energy expenditure from exercise

Question 2

What is Energy Availability? How is it calculated?

Answer 2

EA = amount of dietary energy available to the body to perform all other functions after cost of exercise is subtracted

EA (kcal/kg of fat mass) = (TDI - Energy expenditure from exercise) / FFM

Question 3

What is relative energy deficiency?

Answer 3

energy balance exists, but there is insufficient energy for health, function and daily living after accounting for energy expenditure due to exercise
– ~45 kcal / kg FFM = energy balance and optimal health
– < 30 kcal / kg FFM is associated with reduced athletic performance and long term metabolic consequences in both female and male athletes