Caffeine may help you lift faster, study suggests
NCT ID NCT07701395
First seen Jul 14, 2026 · Last updated Jul 16, 2026 · Updated 2 times
Summary
This study looks at whether caffeine helps trained men lift weights faster. Thirteen men took either caffeine or a placebo before doing bench press and squats at different weights. Researchers measured how fast the bar moved to see if caffeine made a difference. The goal is to understand if caffeine can improve strength 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 (3 mg per kg of body weight)
- What this could lead to
- If caffeine reliably improves lifting speed, athletes might use it to enhance training performance.
- What could go wrong
- This is a small, early study in healthy men only, so results may not apply to women or less trained people. Caffeine can cause jitters or stomach discomfort.
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
-
13 people
The number who actually took part.
- Started
-
Jan 2025
- Finished
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Dec 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 35 years
- Sex
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Male participants only
- Healthy volunteers
-
Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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: * Age between 18 and 35 years. * Body Mass Index (BMI) \< 25 kg/m². * Resistance-trained individuals (more than 6 months of structured training). * Healthy men and women without neurological, cardiometabolic, immunological, or physical conditions that prevent them from exercising. * Participants must be able to perform the tests described in the following section. Exclusion Criteria: * History of neuromuscular diseases, heart disease, or conditions that may affect liver or muscle metabolism. * Use of drugs, stimulants, or sports supplements that could interfere with the dietary supplement used in the study. * Sedentary habits (less than 150 minutes/week of moderate exercise). * Having undergone prolonged periods of physical inactivity in the 6 months prior to the study. * Engaging in strenuous exercise within 48 hours prior to the tests.• Failure to replicate the same food intake on both experimental days. * Consumption of caffeine or any other stimulant after 6 pm on the day before the tests, to avoid headaches, discomfort, or lethargy in regular caffeine consumers.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Facultad de Medicina y Ciencias de la Salud. Universidad de Alcalá
Alcalá de Henares, Madrid, 28805, Spain
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