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Study note

Effects of 2 Intersection Strategies for Physical Recovery in Jiu-Jitsu Athletes.

PMID 33477108 (2021): recovery — Recovery speed (study note for endurance athletes).

Updated Jul 22, 2026

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Study note • PMID 33477108

Effects of 2 Intersection Strategies for Physical Recovery in Jiu-Jitsu Athletes.

International journal of sports physiology and performance2021 • DOI 10.1123/ijspp.2019-0701

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

To compare the effect of static stretching (SS) and cold-water immersion (CWI) on strength performance and blood lactate levels of jiu-jitsu athletes. (randomized trial; athletes).

The abstract suggests a trade-off or negative effect affecting Recovery speed. Treat this as a signal, not a guarantee; confirm methods and context in the full paper.

Takeaways

What the abstract suggests

  • Study question: To compare the effect of static stretching (SS) and cold-water immersion (CWI) on strength performance and blood lactate levels of jiu-jitsu athletes.
  • The abstract suggests a trade-off or negative effect affecting Recovery speed.
  • Population: athletes.
  • Protocol cues (title/abstract): 3 min.

Protocol

Protocol (as reported)

  • Intervention/exposure: recovery (vs control group).
  • Dose/time/duration cues in abstract/title: 3 min.
  • 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 (athletes) 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.
  • Population: athletes.
  • Comparator: control group.
  • Outcomes measured: Recovery speed.
  • Protocol cues mentioned: 3 min.
  • Source: PubMed PMID 33477108 (2021) — International journal of sports physiology and performance.

Results excerpt

What the abstract reports

There was an interaction (F = 3.592; P = .015) and a time effect (F = 122.631; P = .0001) for blood lactate concentration, showing lower levels after CWI versus CG (P = .028; ES = 0.93, moderate) and after CWI versus SS…

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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Sources