Jump start your bones: school exercise program aims to build lifelong skeletal strength
NCT ID NCT07659587
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.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 200 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2026
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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13 to 16 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Part of participating classes Exclusion Criteria: * None
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Genom att skicka in godkänner du våra Användarvillkor
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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University of Southern Denmark
Odense, Funen, 5230, Denmark
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