We also have investigated the effect of aspirin supplementation on vascular changes associated with firefighting in older subjects and found that 2 wk of aspirin supplementation did not affect microvascular (reactive hypermia) or macrovascular (arterialstiffness/central blood pressure) responses to firefighting
Collectively, research has shown that firefighting and exercise-induced heat stress lead to vascular alterations, specifically, reduced vascular reactivity/endOthelial function and increased central arterial stiffness, which may play roles in arterial-ventricular uncoupling in response to firefighting activity and heat stress (26,35).