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Period-Powered training: could Cycle-Synced workouts slash ACL injuries in teen athletes?

NCT ID NCT06983184

Prevention Sponsor: Sophia Ulman Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only This study
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
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Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

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Status unknown
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First seen Jun 27, 2026 · Last updated Jul 02, 2026 · Updated 2 times

Summary

This study looks at whether timing certain exercises to match a female athlete's menstrual cycle can make injury prevention training more effective. About 212 healthy teen athletes (ages 14-19) who play sports like soccer or basketball will wear an Oura Ring to track their cycle and complete an 8-week training program. Half will have their workouts synced to their cycle; the other half will not. The goal is to reduce risky movement patterns that lead to ACL tears.

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

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

About 148 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2025

Expected to finish

May 2027

An estimate. End dates often move.

Lead sponsor

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

13 to 19 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Healthy, female high school athlete who participate in running/pivoting sports (e.g., soccer and basketball) * Aged 13-19 years * Participants must also have a mobile phone, personally or via a parent, capable of downloading the Oura Ring app and of syncing to a wearable device via Bluetooth. * Participants will not be excluded from participation if they report irregular periods (not a typical 28-day cycle) or use of hormonal birth control. Exclusion Criteria: Participants will be excluded from enrollment if they: * Have been diagnosed with any musculoskeletal or neuromuscular condition that would impact their movement patterns or training performance * Report not yet starting their menses or not currently menstruating (no period in the prior 3 months). * Females in the general student body who are not an active participant of the school's soccer or basketball program will be excluded from the study. * Participants will be withdrawn if they become pregnant during the course of the study.

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Conditions

The condition(s) this trial relates to.

Anterior Cruciate Ligament Injuries

As listed by the trial registrant

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

Acl injuries

How to take part

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. 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.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Scottish Rite for Children

    Frisco, Texas, 75034, United States

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