On this page
Performance Science Lab
Heat performance evidence lab
Systematic evidence on heat acclimation, cooling and endurance performance, organized around protocol fit and safety.
Start here
- • Define the event environment and outcome before choosing a protocol.
- • Check population, heat dose, exercise mode and monitoring in the source study.
- • Use conservative exposure and explicit heat-illness stopping rules.
Topic guides
Practical starting points to test conservatively.
Outcomes this affects
Study library (reference)
Individual studies for deeper reading.
Short-term heat acclimation training improves physical performance: a systematic review, and exploration of physiological adaptations and application for team sports.
PMID 24817609 (2014): heat acclimation — Performance in heat, Time-trial performance (study note for endurance athletes).
Efficacy of Heat Mitigation Strategies on Core Temperature and Endurance Exercise: A Meta-Analysis.
PMID 30842739 (2019): heat acclimation — Performance in heat (study note for endurance athletes).
The effect of post-exercise heat exposure (passive heat acclimation) on endurance exercise performance: a systematic review and meta-analysis.
PMID 39762944 (2025): heat acclimation, sauna — Performance in heat, Time-trial performance (study note for endurance athletes).
Effects of three-exercise sessions in the heat on endurance cycling performance.
PMID 34016347 (2021): three, sessions — Performance in heat, Time-trial performance (study note for endurance athletes).
Heat acclimation training with intermittent and self-regulated intensity may be used as an alternative to traditional steady state and power-regulated intensity in endurance cyclists.
PMID 34016357 (2021): heat acclimation — Performance in heat, Time-trial performance (study note for endurance athletes).
Prolonged Heat Acclimation and Aerobic Performance in Endurance Trained Athletes.
PMID 31749712 (2019): heat acclimation — Performance in heat (study note for endurance athletes).
Improvements in Orthostatic Tolerance with Exercise Are Augmented by Heat Acclimation: A Randomized Controlled Trial.
PMID 38079307 (2024): heat acclimation, heat stress — Performance in heat (study note for endurance athletes).
The efficacy of weekly and bi-weekly heat training to maintain the physiological benefits of heat acclimation.
PMID 34750069 (2022): heat acclimation, heat acclimatization — Performance in heat (study note for endurance athletes).
Effect of short-term heat acclimation on endurance time and skin blood flow in trained athletes.
PMID 24379721 (2013): heat acclimation — Performance in heat (study note for endurance athletes).
Diver Underwater Cycling Endurance After Short-Term Warm and Hot Water Acclimation.
PMID 35822881 (2023): heat acclimation, hot water immersion — Performance in heat (study note for endurance athletes).
Differing Physiological Adaptations Induced by Dry and Humid Short-Term Heat Acclimation.
PMID 31094262 (2020): heat acclimation, heat stress — Performance in heat, Time-trial performance (study note for endurance athletes).
Post-exercise hot water immersion induces heat acclimation and improves endurance exercise performance in the heat.
PMID 26661992 (2016): heat acclimation, hot water immersion — Performance in heat (study note for endurance athletes).
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.
FAQs
Does heat acclimation improve endurance performance?
Systematic evidence reports benefits in some settings, but effects depend on protocol, population, environment and outcome.
Is passive heat exposure the same as training in heat?
No. It is a different intervention with different practical demands and evidence; compare the study design before applying it.
Can I copy a heat protocol from a study?
Not automatically. Check population, dose, monitoring and your health context, then seek qualified guidance when risk is uncertain.
Keep going
Recovery Routine for Endurance Training: A Daily Checklist
Use a practical endurance recovery routine for the minutes after training, the evening and the next-morning decision.
Open guidePerformance Science Lab
Research summaries for endurance athletes, with study context, practical protocols, and clear limitations.
Open guideSources
- Short-term heat acclimation training improves physical performance: a systematic review, and exploration of physiological adaptations and application for team sports.
- Efficacy of Heat Mitigation Strategies on Core Temperature and Endurance Exercise: A Meta-Analysis.
- The effect of post-exercise heat exposure (passive heat acclimation) on endurance exercise performance: a systematic review and meta-analysis.
- Effects of three-exercise sessions in the heat on endurance cycling performance.
- Heat acclimation training with intermittent and self-regulated intensity may be used as an alternative to traditional steady state and power-regulated intensity in endurance cyclists.
- Prolonged Heat Acclimation and Aerobic Performance in Endurance Trained Athletes.
- Improvements in Orthostatic Tolerance with Exercise Are Augmented by Heat Acclimation: A Randomized Controlled Trial.
- The efficacy of weekly and bi-weekly heat training to maintain the physiological benefits of heat acclimation.