Study note • PMID 35109780
Caffeine ingestion attenuates diurnal variation of lower-body ballistic performance in resistance-trained women.
Worth trying if it fits your goal and context.
ELI5
In plain language
ABSTRACTThe present study investigates the effect of an acute intake of caffeine on the diurnal variation of neuromuscular performance in resistance-trained women. (randomized trial; trained participants).
The abstract doesn’t indicate a clear change in Time-trial performance under the tested conditions. Treat this as a signal, not a guarantee; confirm methods and context in the full paper.
Takeaways
What the abstract suggests
- • Study question: ABSTRACTThe present study investigates the effect of an acute intake of caffeine on the diurnal variation of neuromuscular performance in resistance-trained women.
- • The abstract doesn’t indicate a clear change in Time-trial performance under the tested conditions.
- • Population: trained participants.
- • Protocol cues (title/abstract): 3 mg/kg • 7 days.
Protocol
Protocol (as reported)
- • Intervention/exposure: caffeine (vs placebo).
- • Dose/time/duration cues in abstract/title: 3 mg/kg • 7 days.
- • Outcomes: Time-trial performance, Time to exhaustion.
- • 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, Time to exhaustion 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: randomized trial (placebo-controlled).
- • Population: trained participants.
- • Comparator: placebo.
- • Outcomes measured: Time-trial performance, Time to exhaustion.
- • Protocol cues mentioned: 3 mg/kg • 7 days.
- • Source: PubMed PMID 35109780 (2023) — European journal of sport science.
Results excerpt
What the abstract reports
“No significant interaction (time-of-day x substance) was observed in any of the above-mentioned outcomes (all P > .1).”
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).
- • Single studies often don’t generalize to your event, history, and training load; treat results as a starting point.
- • 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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Time-trial performance research for endurance athletes
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Time to exhaustion research for endurance athletes
A lab outcome that can still guide training: it often tracks fatigue resistance.