Acute Caffeine Intake in Young vs Older Adults (NCT07711652) | Clinical Trial Compass
CompletedNot Applicable
Acute Caffeine Intake in Young vs Older Adults
Spain120 participantsStarted 2023-01-14
Plain-language summary
Evidence regarding the ergogenic effects of caffeine is well-established in young adults, but evidence in older adults remains scarce, particularly during dynamic resistance exercise. Therefore, this study compared the effects of acute caffeine ingestion on upper- and lower-body muscular strength and endurance performance according to age, in young and older adults.
Who can participate
Age range
18 Years – 80 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Age between ≥18 and 35 years in young adults and ≥ 55 and 80 years in older adults.
* Body mass index (BMI) lower than 25 kg/m².
* Physically active subjects (≥150 min/week of moderate exercise).
* Healthy men and women without neurological, cardiometabolic, immunological, or physical conditions that prevent them from performing physical exercise.
* Participants capable of performing the tests.
Exclusion Criteria:
* History of neuromuscular, cardiac, or diseases that could affect liver or muscle metabolism.
* Use of drugs or other stimulants that interfere with caffeine intake and intestinal absorption during the tests and study.
* Body mass index (BMI) ≥ 25 kg/m².
* Having undergone prolonged periods of forced physical inactivity during the 6 months prior to the study.
* Performing strenuous exercise within 48 hours prior to the tests.• Failing to replicate the same food intake on the two experimental days.
* Consuming caffeine after 6 PM on the day prior to training or testing.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Mean velocity at different %1RM
Timeframe: Through study completion, an average of 3 weeks
2
Number of repetitions performed in 1 set at 65%1RM until task failure
Timeframe: Through study completion, an average of 3 weeks
3
Bar velocity displacement performed in 1 set at 65%1RM until task failure
Timeframe: Through study completion, an average of 3 weeks
4
handgrip and isometric mid-thigh pull tests
Timeframe: Through study completion, an average of 3 week