cross-posting this link from my journal because i think it's worth looking at as the world gets hotter, faster, and folks on here are still training outside (me, seifullaah, vag, etc.) or doing a lot of other outdoor work (adarq). wet-bulb temperature as i write this is 28, or at the top of the range that the authors propose for the upper limit of thermoregulation when doing light exercise. and that's just for young, healthy adults, to say nothing of older people, babies and toddlers, people with health conditions, etc. it's 99 degrees (37.2 and the accuweather "real feel" is 118 (48.
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my fiancee found an article this morning that used my T+DI measurement and suggested that anything over 160 is too dangerous to do hard exercise. this was after cutting off her own run at 13 miles, at about 10 AM, before it got *really* hot.
stay safe out there, everyone.
Evaluating the 35°C wet-bulb temperature adaptability threshold for young, healthy subjectshttps://journals.physiology.org/doi/full/10.1152/japplphysiol.00738.2021This study is the first to use empirical physiological observations to examine the well-publicized theoretical 35°C wet-bulb temperature limit for human to extreme environments. We find that uncompensable heat stress in humid environments occurs in young, healthy adults at wet-bulb temperatures significantly lower than 35°C. In addition, uncompensable heat stress occurs at widely different wet-bulb temperatures as a function of ambient vapor pressure.
