Performing exercise in the heat can increase the risk of health complications, especially among middle-aged and older adults who have impaired whole-body heat loss (WBHL) relative to young adults.1 That risk may be higher among patients with type 2 diabetes due to abnormalities in cutaneous vasodilation and sweating, which facilitate WBHL.2 However, repeated brief exercise for 7 days or more during heat exposure (heat acclimation) may mitigate this risk by enhancing WBHL.3 We therefore assessed whether type 2 diabetes impairs heat loss in physically active middle-aged and older adults during exercise heat stress and whether heat acclimation could offset any impairment.
Notley SR, Poirier MP, Sigal RJ, et al. Exercise Heat Stress in Patients With and Without Type 2 Diabetes. JAMA. 2019;322(14):1409–1411. doi:10.1001/jama.2019.10943
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