Why the study?
The influence of aging and sex on cerebral blood flow responses to isometric exercise is unknown.
How do age, sex, and exercise intensity affect cerebral artery hemodynamics during isometric handgrip exercise in healthy individuals?
How do age, sex, and exercise intensity affect cerebral artery hemodynamics during isometric handgrip exercise in healthy individuals?
Aging specifically blunts middle cerebral artery hemodynamic responses to isometric exercise, while other cerebral and extracranial territories remain preserved.
Age selectively blunts MCA responses to handgrip; hypothesis-generating for regional cerebrovascular aging effects.
The influence of aging and sex on cerebral blood flow responses to isometric exercise are unknown. We observed intensity-dependent increases in velocity of the intracranial arteries, whereas the extracranial artery responses were similarly increased at all intensities during handgrip exercise in young and older individuals. Furthermore, we observed a blunted middle cerebral artery velocity response to handgrip exercise with advancing age, whereas the posterior circulation and extracranial responses were preserved across the lifespan in healthy individuals in males and females alike.
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Koep et al. (2024) studied this question.
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