In their article, Brearley and Finn thoroughly review the pre-cooling literature most relevant to sport performance. The article should certainly be used as a guide for practitioners implementing these strategies for training or competition in extreme heat.

A challenge of using cooling strategies in the field is portability and access to freezers and/or power sources. Thus cooling garments, usually ice-vests, have been used extensively, since they require access only to a freezer and the ice-packs can be kept in insulated coolers. As Brearley and Finn state, ice-vest cooling reduces skin temperature without necessarily reducing core temperature. The performance benefits are small but still potentially worthwhile and both physiological and psychological effects may underlie the ergogenic effect. Their review clearly indicates that performances in the range of several minutes to an hour are likely to benefit from pre-cooling, but more work is required to explore the potential benefits of pre-cooling across a range of sporting events