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Caffeine and baking soda: the surprising gym hack tested

NCT ID NCT06714331

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study looked at whether taking caffeine and sodium bicarbonate (baking soda) before exercise helps people do more reps and feel less tired during weight training. Twelve healthy, active adults took the supplements or a placebo and then did bench press and knee extension exercises. Researchers measured repetitions, muscle activity, and fatigue to see if the supplements made a difference.

What this could mean

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

Active substance
caffeine and sodium bicarbonate supplements
What this could lead to
If it works, this could help athletes and gym-goers improve short-term workout performance with simple supplements.
What could go wrong
This is a very small, early-phase study with only 12 people, so results may not apply to everyone. Supplements can cause side effects like stomach upset or jitters.

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

Early phase 1

The earliest testing in people: a first look at safety, in a very small group.

Participants

12 people

The number who actually took part.

Started

Aug 2024

Finished

May 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 40 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: * apparently healthy, physically active males and females between 18-40 years of age with regular (minimum three times a week) resistance training experience for the last 6 months and regular caffeine intake (at least once a day). Exclusion Criteria: * recent musculoskeletal or musculotendinous injuries

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Conditions

The condition(s) this trial relates to.

Fatigue

As listed by the trial registrant

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

Nutritional supplementation Resistance training

Contacts and locations

Locations

  • Memorial University of Newfoundland

    St. John's, Newfoundland and Labrador, A1C 5S7, Canada

More trials for these conditions

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