Elite Rugby Sevens match play is characterized by high in-tensity running, accelerations, decelerations and collisions(11), and repeated high-intensity efforts (4, 5). Due to thepopularity of Rugby Sevens, tournaments are played world-wide, including in hot and humid environments (e.g. 45°C in Sydney during Sevens 2020). When training or competing inthe heat, physiological strain can lead to impairments in endurance exercise capacity (9). Elevated whole-body temperature can also impair repeated sprint performance through areduction in arterial oxygen delivery, greater reliance on anaerobic energy provision and accelerated accumulation of atomichydrogen (6). Such heat related physiological impairmentscould impact performance in Rugby Sevens.
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