Review
A systematic review of guidelines for the prevention of heat illness in community-based sports participants and officials

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Summary

This paper presents the findings of a systematic review of guidelines on preventing heat illness in sports participants and officials. University library databases and Internet sources were searched for guidelines pertaining to community-based sports, and occupational health and safety, using a comprehensive list of search terms. Guidelines were included if they met the criteria of English language, full text and fully referenced, and dealt specifically with, or could be extrapolated to, prevention of heat illness in sports participants and officials. Guideline inclusion was evaluated by two independent reviewers, who also independently assessed guideline quality using the AGREE instrument. Common guideline themes were identified by synthesis and recommendations for each theme were extracted. A synthesis of recommendations for common themes was then undertaken. Thirteen eligible guidelines were included. Thirty-two guidelines were excluded, as they did not provide sufficient information on construction or references. The methodological quality of the included guidelines was variable. The evidence-base of the guidelines varied, reflecting primary and secondary research. While five common heat-illness prevention themes were identified (fluid intake, heat limits, clothing, acclimatisation, precautionary interventions), variable recommendations were made pertaining to these themes. This potentially reflected the variable underpinning evidence of the guidelines. This review highlighted the need for better quality guideline construction related to defensible and transparent evidence sources regarding sports participation in hot weather. The synthesised recommendations cautiously provide a framework of current best evidence upon which sporting organisations internationally can base strategies for safe participation in the heat.

Section snippets

Background

Physical activity for reasons of occupation or recreational exercise in hot and humid environments can lead to serious harm from dehydration, heat exhaustion and heat stroke1, 2, 3. The maintenance of optimal physical output requires that body temperature be regulated within relatively narrow limits1. Work or sports participation in the heat for long periods can lead to progressive heat illness, which is associated with impaired physical and mental performance4.

Guidelines are therefore required

Method

The research team conducted a systematic review of eligible guidelines related to preventing heat illness during sports participation. The objectives of the systematic review were to identify relevant secondary evidence (guidelines) regarding the prevention of injury related to sports participation and sports management in the heat, to evaluate the methodological quality of the available evidence, and to synthesise the guideline recommendations into a framework of advice. A stakeholder

Included evidence and its quality

Thirteen guidelines19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 were included in this review (five related to sports and eight related to occupations) (see Table 1). This table provides the publication details and the evidence sources on which each guideline is based. A further 32 guidelines were identified by the search, but were excluded from analysis (22 related to sports, and 10 to occupation). The excluded guidelines are listed in Appendix A with the reasons for exclusion, the most

Discussion

Extreme heat conditions around the world are commonly associated with reports of heat illness in sports participants and officials.2, 3, 4 In their preambles, the guidelines considered in this review all suggest that the likelihood for heat illness should be predictable, and that the illness is preventable if appropriate precautions are taken. This systematic review of currently available full text, fully referenced guidelines for prevention of heat illness in sports participants and officials

Conclusion

This review provides recommendations regarding prevention of heat illness in sports participants and officials that are based on current best available guideline evidence. Given the international sources of underpinning the guidelines included in this review, these recommendations are applicable to sports participants and officials in hot weather in any country around the world. The synthesised recommendations from this review have been disseminated by Sports Medicine Australia in South

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