Study note • PMID 39771003
Acute Co-Ingestion of Caffeine and Sodium Bicarbonate on Muscular Endurance Performance.
How to use this page
This note summarizes one study record. Check the participants, methods, results, and limitations before applying it to training.
- • Design signal: randomized trial.
- • Population relevance: athlete/trained context.
- • Consistency: single-study evidence.
- • Practical recommendation depends on tolerance, context, and whether it protects training consistency.
ELI5
In plain language
This study aimed to evaluate the acute effects of co-ingesting caffeine and sodium bicarbonate on muscular endurance at different loads in bench press and back squat exercises. (randomized trial; trained participants).
The abstract suggests a positive effect on 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: This study aimed to evaluate the acute effects of co-ingesting caffeine and sodium bicarbonate on muscular endurance at different loads in bench press and back squat exercises.
- • The abstract suggests a positive effect on Time-trial performance under the tested conditions.
- • Population: trained participants.
- • Protocol cues (title/abstract): 0.3 g/kg • 3 mg/kg.
Protocol
Protocol (as reported)
- • Intervention/exposure: caffeine, bicarbonate (vs placebo).
- • Dose/time/duration cues in abstract/title: 0.3 g/kg • 3 mg/kg.
- • 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 may help, and who should be cautious
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 be cautious
- • 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 (double-blind, placebo-controlled).
- • Population: trained participants.
- • Comparator: placebo.
- • Outcomes measured: Time-trial performance, Time to exhaustion.
- • Protocol cues mentioned: 0.3 g/kg • 3 mg/kg.
- • Source: PubMed PMID 39771003 (2024) — Nutrients.
Results excerpt
What the abstract reports
“CAF increased the number of repetitions (p < 0.001; eta(p)(2) = 0.111), mean velocity (V(mean), p = 0.043, eta(p)(2) = 0.16), and mean power output (W(mean), p = 0.034, eta(p)(2) = 0.15) compared to placebo.”
Note: excerpts are short; for full context, read the paper.
Limits
Limitations and 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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