Skip to content

Study note

Regular postexercise cooling enhances mitochondrial biogenesis through AMPK and p38 MAPK in human skeletal muscle.

PMID 26041108 (2015): cold water immersion — Recovery speed (study note for endurance athletes).

Updated Jul 22, 2026

Read the study note

Study note • PMID 26041108

Regular postexercise cooling enhances mitochondrial biogenesis through AMPK and p38 MAPK in human skeletal muscle.

American journal of physiology. Regulatory, integrative and comparative physiology2015 • DOI 10.1152/ajpregu.00031.2015

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: controlled study.
  • 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 effect of regular postexercise cold water immersion (CWI) on muscle aerobic adaptations to endurance training. (controlled study; participants).

The abstract doesn’t indicate a clear change in Recovery speed 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 investigated the effect of regular postexercise cold water immersion (CWI) on muscle aerobic adaptations to endurance training.
  • The abstract doesn’t indicate a clear change in Recovery speed under the tested conditions.
  • Population: participants.
  • Protocol cues (title/abstract): 15 min • 48 h.

Protocol

Protocol (as reported)

  • Intervention/exposure: cold water immersion (vs comparison group).
  • Dose/time/duration cues in abstract/title: 15 min • 48 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 (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: controlled study.
  • Population: participants.
  • Comparator: comparison group.
  • Outcomes measured: Recovery speed.
  • Protocol cues mentioned: 15 min • 48 h.
  • Source: PubMed PMID 26041108 (2015) — American journal of physiology. Regulatory, integrative and comparative physiology.

Results excerpt

What the abstract reports

Moreover, large effect sizes (Cohen's d > 0.8) were noted with changes in protein content of p38 (d = 1.02, P = 0.064), PGC-1alpha (d = 0.99, P = 0.079), and peroxisome proliferator-activated receptor alpha (d = 0.93, P = 0.10) in COLD…

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.

Adaptive AI coach for iPhone

Meet your adaptive AI coach.

Tell your coach what you are training for. It builds the plan, follows the work you complete, and adapts upcoming training when recovery, your schedule, or real life changes.

Keep going

Sources