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Herbal supplement tested for quick power boost in fighters

NCT ID NCT07164547

Symptom relief Sponsor: Salih ÇABUK 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested whether a single 625 mg dose of Tribulus terrestris, a herbal supplement, could improve anaerobic performance and sprint times in 28 trained male combat athletes. Participants took either the supplement or a placebo before cycling and sprint tests, then switched after a washout period. The goal was to see if the supplement could enhance peak power and speed.

What this could mean

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

Active substance
Tribulus terrestris extract (625 mg, 40% saponins)
What this could lead to
If it works, this could suggest a natural supplement for short-term power and sprint improvement in athletes.
What could go wrong
This is a small, completed trial in young male athletes only. Effects may not apply to other groups, and any benefit is likely small and short-lived.

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

28 people

The number who actually took part.

Started

Mar 2025

Finished

Aug 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

18 to 30 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 athletes aged 18-30 years * Engaged in combat sports (kickboxing, Muay Thai, or taekwondo) * Minimum 2 years of continuous training experience * Training at least 4 sessions per week * Free from injury or illness at the time of testing * Provided written informed consent Exclusion Criteria: * Use of ergogenic supplements, anabolic steroids, or hormonal treatments within the past 3 months * Consumption of caffeine, alcohol, or performance-enhancing substances within 24 hours before testing * Current musculoskeletal injury or medical condition that may limit performance * Any chronic disease or contraindication to high-intensity exercise

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As listed by the trial registrant

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

Anaerobic power Sprint performance

Contacts and locations

Locations

  • Atatürk University, Sports Science Laboratory

    Erzurum, Erzurum, 25240, Turkey (Türkiye)

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