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New study: which strength training boosts soccer performance best?

NCT ID NCT07447258

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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at two different ways of strength training in 24 teenage male soccer players. One method used speed of movement to guide training, while the other used the traditional approach of training until failure. After six weeks, researchers measured changes in strength, speed, jumping, and muscle size to see which method worked better.

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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

24 people

The number who actually took part.

Started

Mar 2021

Finished

May 2021

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

15 to 17 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 youth soccer players aged 15-17 years * Competing in an elite youth soccer academy league * Actively participating in organized soccer training and official competitions * Minimum of 2 years of structured resistance training experience as part of team training * Training regularly five days per week with official matches on weekends * Free from musculoskeletal injury or other health problems at the time of enrollment * Ability to correctly perform squat, deadlift, and hip thrust exercises * Written informed consent obtained from parents or legal guardians, and assent obtained from participants Exclusion Criteria * History of musculoskeletal injury or surgery within the previous 6 months * Presence of any neurological, cardiovascular, or orthopedic disorder * Use of performance-enhancing drugs or supplements affecting neuromuscular performance * Participation in another structured strength or conditioning research study within the previous 3 months * Failure to attend more than 10% of the scheduled training sessions * Inability or unwillingness to comply with the study protocol or testing procedures

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As listed by the trial registrant

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

Contacts and locations

Locations

  • Pamukkale University Sports Science Research Laboratory

    Denizli, Pamukkale, 20000, Turkey (Türkiye)

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