Key result
Greater cardiorespiratory fitness is beneficially associated with improved cerebrovascular hemodynamics in adults without risk factors, but these associations are attenuated in those with risk factors.
Why the study?
Does cardiorespiratory fitness improve cerebrovascular hemodynamics, and is this association modified by sex and cardiovascular risk factors?
Observational
Does cardiorespiratory fitness improve cerebrovascular hemodynamics, and is this association modified by sex and cardiovascular risk factors?
The beneficial associations between cardiorespiratory fitness and cerebrovascular hemodynamics are sex-specific and attenuated by the presence of modifiable cardiovascular risk factors.
Answers are grounded in this paper and cite their sources.
Fitness linked to lower carotid stiffness in low-risk females; hypothesis-generating for sex-specific cerebral benefits, needs prospective trials.
We identify beneficial associations between cardiorespiratory fitness and lower carotid stiffness and pulse pressure as potential mechanisms underlying sex-specific associations of fitness and cerebral pulsatility in females without modifiable risk factors. Greater fitness is beneficially associated with conductance, pulsatile damping, and forward wave energy among adults without risk factors; however, associations are attenuated among adults with modifiable risk factors. These data suggest sex and risk factors may alter cerebrovascular sensitivity to cardiorespiratory fitness.
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Lefferts et al. (2022) conducted an observational in Adults with and without modifiable cardiovascular risk factors. Cardiorespiratory fitness was evaluated on Cerebrovascular hemodynamics (carotid stiffness, pulse pressure, cerebral pulsatility). Greater cardiorespiratory fitness is beneficially associated with improved cerebrovascular hemodynamics in adults without risk factors, but these associations are attenuated in those with risk factors.
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