Study note • PMID 41452289
Hot- and Cold-Water Immersion Do Not Alter Performance or Perceived Fatigability but Improve Muscle Activation, Cardiac Vagal Modulation, and Cardiorespiratory Recovery After Distinct Running Protocols.
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: mixed/unclear athlete specificity.
- • Consistency: single-study evidence.
- • Practical recommendation depends on tolerance, context, and whether it protects training consistency.
ELI5
In plain language
This study investigated the effects of cold-water immersion (11 degrees C, CWI(11 degrees )) and hot-water immersion (41 degrees C, HWI(41 degrees )) on components of fatigability after distinct… (randomized trial; n=12 participants).
The abstract reports an association involving Recovery speed (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: This study investigated the effects of cold-water immersion (11 degrees C, CWI(11 degrees )) and hot-water immersion (41 degrees C, HWI(41 degrees )) on components of fatigability after distinct…
- • The abstract reports an association involving Recovery speed (not necessarily causation).
- • Population: n=12 participants.
- • Protocol cues (title/abstract): 24 h • 2 h • 4 h.
Protocol
Protocol (as reported)
- • Intervention/exposure: recovery (vs placebo).
- • Dose/time/duration cues in abstract/title: 24 h • 2 h • 4 h.
- • Outcomes: Recovery speed.
- • 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 (n=12 participants) working on recovery.
- • Athletes who can measure Recovery speed 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 (placebo-controlled).
- • Population: n=12 participants.
- • Comparator: placebo.
- • Outcomes measured: Recovery speed.
- • Protocol cues mentioned: 24 h • 2 h • 4 h.
- • Source: PubMed PMID 41452289 (2025) — Scandinavian journal of medicine & science in sports.
Results excerpt
What the abstract reports
“Furthermore, compared to placebo, HWI(41 degrees ) increased vastus lateralis activation during maximal voluntary contractions (RMS/M-wave(amp)) 2 and 4 h after the CONT(100%RCP), while CWI(11 degrees ) increased it at the same time points after the HIIT(150%RCP) (condition x time interactions, p < 0.05).”
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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