High-intensity exercise and passive hot water immersion cause similar postintervention changes in peripheral and cerebral shear
Sachin B. Amin, Alexander B. Hansen, Hendrik Mugele, Lydia L. Simpson, Kyohei Marume, Jonathan P. Moore, William K. Cornwell, Justin S. Lawley
Abstract
The study aimed to compare shear rates in lower limb and extracranial cerebral blood vessels for up to 80 min after high-intensity exercise and whole body passive hot water immersion (PHWI). Time- and core temperature-matched high-intensity exercise and whole body PHWI both elicited minimal, but comparable, postintervention changes in cerebral artery shear rate. Furthermore, 30 min of PHWI caused a postintervention increase in femoral shear rate similar to high-intensity exercise; however, femoral shear remained slightly elevated for a longer period after high-intensity exercise. These results suggest that PHWI provides postintervention changes in lower limb peripheral shear rates comparable to intense exercise and is likely a therapeutic alternative in individuals unable to perform exercise.