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Total heat-loss potential in hot-dry and warm-humid conditions for each wet-bulb globe temperature threshold value (27.9°C, 30.1°C, and 32.3°C) and each football clothing and equipment configuration worn at practices. A, T-shirt and shorts. B, Shells. C, Full gear. Dots indicate average at activity velocities of 0.7 m·s−1 and 0.3 m·s−1; solid lines show the overall average for both velocities for a given environmental type.
