Jump start your bones: school exercise program aims to build lifelong skeletal strength

NCT ID NCT07659587

ENROLLING_BY_INVITATION Prevention Sponsor: University of Southern Denmark Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether a program called FIT FIRST, which involves intense exercise three times a week for 18 weeks, can improve bone health in Danish adolescents. Researchers will compare bone density and blood markers between students in schools that use the program and those that don't. If successful, it could support adding high-intensity physical activity to school curricula for stronger bones.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Frequent intense training (3x40 minutes per week for 18 weeks)
What this could lead to: If it works, this could show that adding high-intensity exercise to school routines helps build stronger bones in teens, potentially reducing fracture risk later in life.
What could go wrong: This is a relatively small, early-stage study (200 participants) focused on healthy adolescents, so results may not apply to other groups. The intervention is behavioral, so adherence and long-term effects are uncertain.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

HEALTHY

Contacts and locations

Locations

University of Southern Denmark

Odense, Funen, 5230, Denmark

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