Fig. 1.

Days where the maximum WBGT (wet-bulb globe temperature) index was “Cancel level for EHS risk for continuous activity and competition” (WBGT ≥ 27.9 °C), “very high risk,” and “cancel or stop practice and competition” (WBGT ≥ 30.1 °C) in Tokyo from 2006 to 2016, as per the American College of Sports Medicine criteria [15]