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Can a weighted sled make teen footballers faster?

NCT ID NCT07797920

Knowledge-focused Sponsor: Bitlis Eren University Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 01, 2026 · Last updated Sep 02, 2026 · Updated 1 time

Summary

This trial tests whether pulling a weighted sled during sprint training improves speed and jumping power in young male football players aged 13 to 14. Over 8 weeks, participants train twice a week with sled loads equal to 10%, 15%, or 20% of their body weight. Researchers measure sprint times over 5, 10, and 15 meters, along with jump tests, to see which load works best without hurting running form.

What this could mean

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

Active substance
Resisted sled sprint training with loads of 10%, 15%, or 20% of body weight
What this could lead to
If it works, this could identify the best sled load to improve acceleration and jumping power in young athletes, helping coaches design more effective sprint training.
What could go wrong
This is a small, early-stage study in a specific group of teenage boys, so the results may not apply to other athletes. The training is demanding and could carry a risk of muscle soreness or injury.

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 30 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Nov 2026

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 14 years

Sex

Male 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: * Male football players aged chronologically between 13 and 14 years. * Minimum of 2 years of active, licensed competitive football experience in a club or academy. * Regular attendance at scheduled team training sessions. * Written Informed Consent/Assent signed by both the participant (Child Assent Form) and parent/legal guardian (Parental Consent Form). * Free of severe lower-limb musculoskeletal injuries (e.g., ligament tears, fractures, meniscus injuries) in the past 6 months. Exclusion Criteria: * Chronological age \<13 or \>14 years. * Presence of chronic, cardiovascular, metabolic, or respiratory conditions (e.g., asthma) that pose risks during high-intensity maximal exercise. * Regular use of performance-enhancing supplements or medications affecting physiological and neuromuscular responses. * Absence from more than 10% of prescribed sled training sessions (2 or more sessions out of 16). * Failure to complete pre- or post-intervention performance testing batteries, or failure to demonstrate maximal effort during testing. * Concurrent participation in external individual strength, speed, or fitness programs outside the football academy.

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As listed by the trial registrant

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

Athletic performance Neuromuscular adaptations

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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    Open the record ↗

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Contacts and locations

Locations

  • Bitlis Eren University

    Bitlis, Central, 13000, Turkey (Türkiye)

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