Author’s reply to brocherie and millet: ‘is the wet-bulb globe temperature (WGBT) index relevant for exercise in the heat?’

Sports MedicinePériard JD, Jay O, Alonso JM, Coutts AJ, Flouris AD, González-Alonso J, Hausswirth C, Lee JK, Nassis GP, Nybo L, Pluim BM, Roelands B, Sawka MN, Wingo J, Racinais S. Author’s Reply to Brocherie and Millet: ‘Is the Wet-Bulb Globe Temperature (WGBT) Index Relevant for Exercise in the Heat?’. Sports Med. 2015 Nov;45(11):1623-4. doi: 10.1007/s40279-015-0392-x. Erratum in: Sports Med. 2016 Jan;46(1):139-41. Kong, Lee [removed]. Erratum in: Sports Med. 2016 Jan;46(1):139-141. PMID: 26392123.


We thank the correspondents [1] for their interest in the recent consensus statement on training and competing in the heat [2]. However, we were somewhat perplexed to note that the authors considered that the consensus statement “did not highlight one of the main current limitations: the recommendations for various sporting governing bodies (i.e., event organizers and international federations) are still based on the Wet-Bulb Globe Temperature (WBGT) index”. Indeed, one of the main recommendations in the consensus statement is that “the WBGT is an environmental heat stress index and not a representation of human heat strain. It is therefore difficult to establish absolute participation cut-off values across sports for different athletes and we rather recommend implementing preventive countermeasures or evaluating the specific demands of the sport when preparing extreme heat policies” [2].

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