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Blood flow restriction may change how hamstrings use oxygen during exercise

NCT ID NCT07715786

Knowledge-focused Sponsor: Toros University Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
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 Results may not be published yet.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)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
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

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 20, 2026 · Last updated Jul 21, 2026 · Updated 1 time

Summary

This study looks at how adding blood flow restriction affects muscle oxygen levels during a specific hamstring exercise in elite athletes aged 14 to 18. Each participant does the exercise both with and without a cuff that limits blood flow, and the order is random. The goal is to understand the body's response better, which could help improve training methods.

What this could mean

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

Active substance
Nordic Hamstring Exercise and Blood Flow Restriction Nordic Hamstring Exercise
What this could lead to
If successful, this study could help design more effective hamstring training programs for young athletes.
What could go wrong
This is a small, early-stage study in healthy volunteers, so results may not apply to other populations or predict long-term outcomes.

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 24 people

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

Started

Jul 2026

Expected to finish

Aug 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

14 to 18 years

Sex

Anyone

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: * Elite adolescent athletes aged 14 to 18 years. * Licensed athletes with at least 3 years of regular sports participation. * Currently participating in a regular weekly training program. * Physically able to complete the Nordic Hamstring Exercise and study testing protocol. * Willing to participate in the study. * Able to provide written informed consent. * For participants younger than 18 years, written informed consent provided by a parent or legal guardian and assent provided by the participant. Exclusion Criteria: * Hamstring injury within the previous 6 months. * Lower extremity surgery within the previous 6 months. * Current lower extremity pain or musculoskeletal injury that may interfere with exercise performance. * Cardiovascular, vascular, neurological, or other medical conditions that may contraindicate blood flow restriction exercise. * Presence of skin lesions or conditions preventing placement of the blood flow restriction cuff or MOXY sensor. * Inability to complete either exercise condition or follow the study protocol.

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As listed by the trial registrant

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

Healthy volunteers (HV)

How to take part

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  1. The places running it

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  2. The official record

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Contacts and locations

Locations

  • Adana Olympic Preparation Center

    RECRUITING

    Adana, Turkey (Türkiye)

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