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NCT04712578 · ClinicalTrials.gov registry record · NA
Influence of Caffeinated and Non-caffeinated Pre-workout Supplements on Resistance Exercise Performance
A NA study, sponsored by Texas Tech University.
- Completed
- Registry status
- NA
- Development phase
- 24
- Enrollment target
NCT04712578: Completed NA study, sponsored by Texas Tech University.
NCT04712578 is a NA study that has completed, run by Texas Tech University. The registered enrollment target is 24 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (98% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT04712578, a NA study, has completed, sponsored by Texas Tech University.
- COMPLETED
- Registry status
- NA
- Development phase
- 24 participants
- Enrollment target
Study Summary
This study is a randomized, double-blind, placebo-controlled crossover trial examining the effects of caffeinated and non-caffeinated pre-workout supplements on resistance exercise performance. Resistance-trained adults will be randomly assigned to complete three study conditions (caffeinated pre-workout, non-caffeinated pre-workout, and placebo) in one of the six possible condition orders. During each condition, participants will report to the laboratory for ingestion of the assigned beverage and subsequent muscular performance testing. Major performance outcomes will be force production variables from a mechanized squat device and maximal strength and muscular endurance on the bench press and leg press exercises.
Primary Outcome
Peak isometric force produced on a mechanical squat device at an 120-degree knee angle.
Interventions
- DIETARY_SUPPLEMENT Placebo
- DIETARY_SUPPLEMENT Caffeinated pre-workout supplement
- DIETARY_SUPPLEMENT Non-caffeinated pre-workout supplement
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 24 participants |
| Start Date | 2021-02-23 |
| Est. Completion | 2021-05-11 |
| Phase | NA |
What the finished NCT04712578 record still lists
NCT04712578 is an interventional study that assigns participants to a tested intervention. The registry caps enrollment at 24 participants, a relatively small participant target, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (98% lower).
The record links to 0 conditions, and to 3 interventions - of which Placebo is the first listed.
NCT04712578 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT04712578 about?
NCT04712578 is a clinical study titled "Influence of Caffeinated and Non-caffeinated Pre-workout Supplements on Resistance Exercise Performance". This study is a randomized, double-blind, placebo-controlled crossover trial examining the effects of caffeinated and non-caffeinated pre-workout supplements on resistance exercise performance. Resistance-trained adults will be randomly assigned to complete three study conditions (caffeinated pre-wo...
What is the current status of trial NCT04712578?
This trial is currently completed. It is a NA study. The enrollment target is 24 participants. The study started on 2021-02-23. Estimated completion is 2021-05-11.
What interventions are being tested in trial NCT04712578?
The interventions under investigation include: Placebo (DIETARY_SUPPLEMENT), Caffeinated pre-workout supplement (DIETARY_SUPPLEMENT), Non-caffeinated pre-workout supplement (DIETARY_SUPPLEMENT).
Who is sponsoring clinical trial NCT04712578?
This trial is sponsored by Texas Tech University, which has 69 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT04712578's enrollment target sits among peer trials
24 1736th of 2000 higher than 246 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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