Energy Availability and Its Impact in Elite Triathletes

Recruiting now

Conditions studied: Low Energy Availability, Relative Energy Deficiency in Sport

In brief

This study investigates how energy availability affects performance, injury risk, and training outcomes in elite triathletes. Over two competitive seasons (2026-2027), 40 elite and sub-elite triathletes will be monitored through physiological tests, blood samples, and questionnaires. The goal is to identify markers of low energy availability and understand its impact on health and athletic performance. The study is observational and does not involve experimental treatments. Participants continue their regular training and diet while undergoing periodic assessments.

Key facts

Study ID

NCT07232628

Run by

Bispebjerg Hospital

People needed

40

Starts

2025-10-01

Expected to finish

2028-06-01

Last updated by the study team

2025-11-18

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Age ≥18 years
• Healthy individuals
• Training ≥15 hours/week in triathlon

You may not qualify if…

• Smokers
• Use of prohibited substances (WADA list) without medical justification
• Existing injuries or illnesses that could worsen due to participation

Where it is running

• Institute of Sports Medicine Copenhagen, Bispebjerg Hospital — Copenhagen, Denmark (enrolling)

Full record on ClinicalTrials.gov

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