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Core strength may unlock a faster tennis serve – a trial puts it to the test

NCT ID NCT07733869

Symptom relief Sponsor: Cairo University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 29, 2026 · Last updated Jul 30, 2026 · Updated 1 time

Summary

This trial tests whether adding core muscle training to a standard shoulder strengthening program can improve flat serve ball speed and accuracy in recreational tennis players aged 18-35. Participants are randomly assigned to shoulder training plus a sham core routine, combined core and shoulder training, or continued tennis training alone. The study measures serve speed with a radar gun and accuracy with a target-based scoring system over 12 weeks.

What this could mean

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

Active substance
a shoulder strengthening program plus core muscle training
What this could lead to
If it works, this could point toward a more effective training approach for tennis players looking to boost serve speed and accuracy.
What could go wrong
This is a small, early-stage trial in recreational players, so results may not apply to elite athletes or general fitness. The sham core treatment may not fully isolate the effect.

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 120 people

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

Started

Jun 2026

Expected to finish

Sep 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

18 to 35 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: * Healthy adults aged 18-35 years * Recreational to competitive non-professional tennis players (currently playing ≥2 sessions/week for ≥1 year; NTRP 3.0-5.0 or equivalent ITN; no professional ranking or tour-level competition history) * Right- or left-hand dominant (serve arm recorded) * Able to perform a full flat serve without pain * Willing to maintain current tennis training routine and refrain from starting other new strength/conditioning programs during the study Exclusion Criteria: * Current or history of shoulder pain/injury in the past 6 months (e.g., rotator cuff pathology, labral injury, impingement) * Low back pain or lumbar spine pathology in the past 6 months * Prior shoulder or spine surgery * Systemic conditions affecting neuromuscular function (e.g., uncontrolled diabetes, neurological disorders) * Pregnancy * Current participation in a structured core or shoulder strengthening program

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Conditions

The condition(s) this trial relates to.

toxic epidermal necrolysis

As listed by the trial registrant

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

TENNIS Tennis serve performance

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

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

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • BAU activities

    RECRUITING

    Beirut, Giza, 2356, Lebanon

  • Beirut Arab University

    RECRUITING

    Beirut, Beirut, 1100, Lebanon

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