The Effects of Low Energy Availability and High Impact Jumping on Markers of Bone (re)Modelling in Females

Participants will be provided with food to eat every day and will not be permitted to consume any other calorie containing foods or beverages. This amount of energy contained within the food provided will be one third of that contained in the food provided in the control condition (45 kilo-calories per kilogram of fat-free mass per day) and will be standardized between and within participants for carbohydrate, protein and fat composition.

Participants will perform a brief session of high impact jumping every morning (10 maximum effort vertical counter-movement jumps, and 5 maximum effort lateral drop jumps in each direction) and a similar session of high impact jumping every evening (20 maximum effort vertical counter-movement jumps).