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Coffee boost depends on your daily habit, study finds

NCT ID NCT07474753

Knowledge-focused Sponsor: Northumbria University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested how different amounts of caffeine from coffee affect muscle endurance, sprinting, and thinking in 69 physically active men and women. Participants were grouped by their usual daily caffeine intake (low, moderate, or high). They performed exercises and cognitive tests after drinking decaf or caffeinated coffee with varying doses. The goal was to see if a person's habitual caffeine use changes how well caffeine boosts performance.

What this could mean

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

Active substance
caffeine (from coffee)
What this could lead to
If successful, this could help athletes and active people personalize their caffeine intake to boost workout performance.
What could go wrong
This is a small, completed study with only 69 participants. Results may not apply to everyone, and caffeine can cause side effects like jitters or sleep problems.

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

69 people

The number who actually took part.

Started

Dec 2020

Finished

Mar 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

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: * Healthy individuals * Physically active individuals * Non-smokers * Age between 18 and 30 years * Free from respiratory insufficiency * Free from cardiovascular disease * Free from neuromuscular disorders * Free from musculoskeletal injury within the previous 6 months Exclusion Criteria: * Diagnosed cardiovascular disease * Neuromuscular disease * Current limb injury * History of limb injury requiring treatment within the previous 6 months * Chronic respiratory disease or treatment for chronic respiratory conditions

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Conditions

The condition(s) this trial relates to.

Motor Activity

As listed by the trial registrant

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

Dietary supplement Exercise

Contacts and locations

Locations

  • Ankara University's Department of Sports Science

    Ankara, Turkey (Türkiye)

More trials for these conditions

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