Research
Mixed
Pre-cooling and intra-exercise cooling strategies (ice slurry, cooling vests, cold water immersion) improve endurance and intermittent-sprint performance in hot conditions.
Use cooling strategies like ice slurry or cooling vests before or during breaks in hot events. This helps you perform better. Avoid cooling your muscles directly right before a single explosive sprint.
GoodSupportsMEDIUM confidence
Several recent reports support the consumption of an ice-slurry beverage since performance during endurance or intermittent-sprint exercise is improved following the ingestion of an ice-slurry beverage... either prior to or during exercise
Why this rating
Consensus statement citing multiple studies, though noting equivocal results in some competitive settings.
Source
Consensus recommendations on training and competing in the heat
Sébastien Racinais et al. · British Journal of Sports Medicine · 2015
DOI 10.1136/bjsports-2015-094915
clinical_guidelineCited 330×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Heat acclimatisation (repeated exercise-heat exposures over 1–2 weeks) is the most important intervention to reduce physiological strain and optimise aerobic performance in hot ambient conditions.Strong
- Dehydration exceeding 2% of body mass impairs aerobic performance in warm-hot environments, contradicting the 'drink to thirst' approach for severe events.Good
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