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Abstract

International Journal of Exercise Science 16(2): 1398-1412, 2023. Ice-slurry prepared from plain ice, crushed ice, or sports drink has been used as a cooling strategy before exercise to regulate body temperature and improve exercise performance. However, consensus regarding the benefit is unclear. Therefore, the present review aimed to study the effects of pre-exercise ice-slurry ingestion on thermoregulation and exercise performance of highly trained athletes. The Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR) checklist was used. The data extraction was done using the search engine Google Scholar, and digital repositories such as Cochrane, Scopus, Medline, Ebsco, Proquest and Pubmed. The keywords ‘Pre-cooling’, ‘Ice-slurry’, ‘Ice Slush’ ‘Thermoregulation’ ‘Heat Loss’ ‘Heat Stress’ ‘Body Temperature’ ‘Athletes’, ‘Sports Persons’ ‘Exercise Performance’ were used. Among the identified records (n = 151), 11 articles which met the inclusion criteria were examined. Out of the eleven studies, six studies reported a significant decrease in core/rectal/GI/skin/body temperature, and six studies reported a significant increase, or positive influence on exercise performance, and three studies both on thermoregulation and exercise performance. Ingestion of pre-exercise ice-slurry (30 min BE; -1°C to +1°C) in the dosage range of 7-14g/kg/BM has a significant beneficial effect on thermoregulation and exercise performance. Ice-slurry prepared from plain crushed ice, or sports drink, or carbohydrate and electrolyte drinks may have a similar effect on thermoregulation and exercise performance.

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