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District athletic trainers detail wet-bulb globe protocol and heat-safety thresholds
Summary
Health service manager Lance McNamara described the district's use of wet-bulb globe temperature readings and stepwise activity restrictions to reduce heat illness risk in practices.
Lance McNamara, health service manager and athletic trainer for Bexar County School System, briefed the board on Sept. 2 about the district’s heat-safety practices and the wet-bulb globe temperature (WBGT) device the trainers use to set activity modifications.
McNamara said WBGT “gives a number” that determines activity flags: green, yellow, orange, red and black. He described a black-flag threshold at a WBGT value of 92, at…
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