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Shockingly simple: electric stretch boosts young Footballers' flexibility

NCT ID NCT07075497

Symptom relief Sponsor: Cardenal Herrera University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether adding a mild electrical stimulation to a specific stretching technique (PNF) could improve hamstring flexibility and jumping ability in young football players aged 10 to 18. Forty-seven active players were split into two groups: one received real electrical stimulation during stretching, the other a placebo. The goal was to see if the combo could help prevent common hamstring injuries. Results may show a simple way to enhance flexibility in young athletes.

What this could mean

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

Active substance
neuromuscular electrical stimulation (NMES) combined with proprioceptive neuromuscular facilitation (PNF) stretching
What this could lead to
If it works, this could offer a simple way to improve hamstring flexibility and reduce injury risk in young athletes.
What could go wrong
This is a small, completed trial with only 47 participants, so results may not apply to all athletes. The intervention is short-term and may not prevent injuries long-term.

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

47 people

The number who actually took part.

Started

Jul 2025

Finished

Jul 2025

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

10 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: * Active football players who train at least 3 days a week. * Ages between 10 and 18 years. Exclusion Criteria: * Are currently engaged in a structured hamstring-stretching programme. * Present with acute low back pain. * Have sustained a hamstring injury within the past 6 months. * Have undergone spinal or abdominal surgery within the past 6 months.

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As listed by the trial registrant

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

Hamstring flexibility Hamstring muscle tightness

Contacts and locations

Locations

  • University Ceu Cardenal Herrera

    Alfara del Patriarca, Valencia, 46113, Spain

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