Bone Response to Exercise and Energy Restriction in Young Adults
Bone Resorption, Bone Loss
About this trial
This is an interventional prevention trial for Bone Resorption focused on measuring bone, biomarkers, cycling, diet, youth, females
Eligibility Criteria
Inclusion Criteria:
- Caucasian males and females, aged 20 to 25 years
- healthy (not suffering from asthma)
- without any fracture over the last year
- not taking any medication related to a chronic condition or bone health including food/nutritional supplements (e.g. protein, vitamin D, calcium)
- nonsmokers
- females on monophasic oral contraceptives.
Exclusion Criteria:
- Injuries or chronic conditions in which exercise may pose a risk (e.g., ACL or knee/hip/lower back injuries, arthritis, osteoporosis, neuromuscular diseases)
- any restrictive food allergies or dietary restrictions that would require alterations to the diet plan (i.e, vegan, vegetarian) and or
- any eating disorders (e.g., bulimia, and or anorexia)
Sites / Locations
Arms of the Study
Arm 1
Experimental
Participants
For a period of 6 days between the exercise trials (i.e., following visit 3), each participant will be put on a restricted energy restricted diet consisting of a 25% reduction in their habitual total daily calorie intake. To keep the diet consistent and standardized, participants will record their typical food intake during a control week using the "Eat This Much" app, which will then provide an overall portion plan and the 25% caloric restriction measure for the intervention week. Thus, the intervention diet will mirror the control diet in terms of types of food consumed, with the difference being in the amount consumed. There will be no restriction regarding water, but drinks will be restricted according to the overall calorie intake plan.