Study note • PMID 35616851
Effect of Pre-Exercise Caffeine Intake on Endurance Performance and Core Temperature Regulation During Exercise in the Heat: A Systematic Review with Meta-Analysis.
Worth trying if it fits your goal and context.
ELI5
In plain language
To use a meta-analytical approach to determine the effect of pre-exercise caffeine intake on EP and C(T) in the heat. (systematic review / meta-analysis; trained participants).
In this systematic review / meta-analysis, the abstract reports associations involving Time-trial performance (not necessarily causation). Treat this as a signal, not a guarantee; confirm methods and context in the full paper.
Takeaways
What the abstract suggests
- • Study question: To use a meta-analytical approach to determine the effect of pre-exercise caffeine intake on EP and C(T) in the heat.
- • In this systematic review / meta-analysis, the abstract reports associations involving Time-trial performance (not necessarily causation).
- • Population: trained participants.
- • Protocol cues (title/abstract): 6 mg/kg • 30 min • 1 h • 70 min.
Protocol
Protocol (as reported)
- • Intervention/exposure: caffeine.
- • Dose/time/duration cues in abstract/title: 6 mg/kg • 30 min • 1 h • 70 min.
- • Outcomes: Time-trial performance.
- • Replication note: abstracts often omit adherence and timing; confirm details before changing training or supplementation.
Fit
Who it helps, and who should skip it
Who it helps
- • Athletes similar to the study population (trained participants) working on supplements.
- • Athletes who can measure Time-trial performance with a repeatable workout or time-trial effort.
Who should skip
- • If you have symptoms or conditions that make the intervention risky, get professional guidance.
- • If you’re near race day and can’t safely test, defer the experiment.
Methods
What the study actually did
- • Design: systematic review / meta-analysis (placebo-controlled).
- • Population: trained participants.
- • Outcomes measured: Time-trial performance.
- • Protocol cues mentioned: 6 mg/kg • 30 min • 1 h • 70 min.
- • Source: PubMed PMID 35616851 (2022) — Sports medicine (Auckland, N.Z.).
Results excerpt
What the abstract reports
“Respectively six and 12 studies examined caffeine's impact on EP and C(T), representing 52 and 205 endurance-trained individuals.”
Note: excerpts are short; for full context, read the paper.
Limits
Limitations & bias
- • Abstract-only summaries can miss critical details (population, protocol, adherence, and context).
- • Reviews and consensus statements mix protocols and populations; recommendations may not match your exact constraints.
- • If your context differs (elite vs recreational; cycling vs running), adjust expectations and be conservative.
- • This is performance information, not medical advice.
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