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Hamstring showdown: eccentric lifts vs sprinting for muscle gains

NCT ID NCT07716319

Knowledge-focused Sponsor: University of Wisconsin, Madison 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 21, 2026 · Last updated Jul 22, 2026 · Updated 1 time

Summary

This study compares two types of hamstring training—eccentric exercises like the Romanian deadlift and Nordic hamstring exercise versus sprint-specific drills—in healthy collegiate athletes. Over 10 weeks, researchers measure changes in muscle size, strength, power, and sprint performance. The goal is to determine which approach better builds hamstring muscle and improves athletic performance.

What this could mean

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

Active substance
eccentric hamstring exercises (Romanian deadlift and Nordic hamstring exercise) and sprint-specific training
What this could lead to
If successful, this could help design more effective hamstring training programs for athletes to improve performance and reduce injury risk.
What could go wrong
This is a small, early-stage study in healthy athletes, so results may not apply to other populations or real-world sports settings.

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 90 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

Sep 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

18 to 25 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: * Age 18-25 years * Actively participating in a club team * \>6 months experience with resistance training * Minimum of 1 year experience at the high school level in organized team sport * No history of hamstring injury within the last 6 months * No history of major lower extremity surgery (including back) * No acute musculoskeletal injury to the lower extremity * Not currently pregnant Exclusion Criteria: * Unable to refrain from resistance training outside the study * Unable to make at least 80% of the training sessions * Hamstring injury in the last 6 months * History of major lower extremity surgery (including back) * Acute musculoskeletal injury to the lower extremity * Currently pregnant

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Conditions

The condition(s) this trial relates to.

Hypertrophy tinea pedis

As listed by the trial registrant

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

Athlete Exercise training Healthy adult Running SPORT Ultrasound imaging

How to take part

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  1. The places running it

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  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

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  3. A doctor treating you

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Contacts and locations

Locations

  • University of Wisconsin - Madison

    Madison, Wisconsin, 53705, United States

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