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Caffeine may alter your running and jumping form – for better or worse

NCT ID NCT06039358

Knowledge-focused Sponsor: University of Vic - Central University of Catalonia Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at how a dose of caffeine (6mg per kg of body weight) affects the way healthy adults perform exercises like running, squatting, and jumping, both when fresh and when tired. Researchers measured angles, forces, and timing to see if caffeine changes movement technique. The goal is to understand if caffeine's performance boost comes with trade-offs, like increased injury risk.

What this could mean

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

Active substance
caffeine
What this could lead to
If successful, this could help athletes and coaches understand whether caffeine improves or harms movement technique, potentially reducing injury risk.
What could go wrong
This is a small, completed study with only 15 healthy participants, so results may not apply to the general population or athletes in real-world 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

15 people

The number who actually took part.

Started

Oct 2023

Finished

Dec 2023

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

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: * An uninterrupted training time of at least 1 year in the subjects' regular exercise modality (either the person is still training or interrupted the training period during the last year, and with no more than 4 months of detraining). * A good exercise technique of the assessed movement patterns (running, squatting, and jumping). Exclusion Criteria: * Not being 18-30 years old. * Having any relevant medical condition. * Pregnancy. * Smoking. * Regular medication consumption / Medication consumption the days before the sessions during the study. * Other supplementation regular consumption / Other supplementation consumption during the study (excluding sports foods, provided that their goal and nutrients have the objective of substituting the ingestion of regular food (e.g., isotonic drinks, carbohydrates gels, protein powder...), without adding other components that may act as ergogenic substances). * Habitual caffeine consumption of \>25mg/day-0,99mg/kg/day.

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Conditions

The condition(s) this trial relates to.

Fatigue injury Motor Activity

As listed by the trial registrant

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

Biomechanics Caffeine Fatigue Injuries Physical activity

Contacts and locations

Locations

  • University of Vic - Central University of Catalonia.

    Vic, Barcelona., 08500., Spain

More trials for these conditions

Other studies related to the condition(s) this trial covers.