Key result
Elevated cardiorespiratory fitness in endurance athletes was associated with a delayed onset of cerebral autoregulation after sit-to-stand compared to controls (3.1 vs. 1.5 sec; P=0.03).
Why the study?
Does elevated cardiorespiratory fitness alter dynamic cerebral autoregulatory capacity during changes in mean arterial pressure in males?
Population
27 males, comprising 19 endurance athletes and 8 recreational controls
Comparison
Elevated cardiorespiratory fitness vs Recreational controls
Design
Cross-sectional
Authors
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May warrant caution in orthostatic assessments of athletes; leaves open clinical relevance of delayed autoregulation.
Cross-Sectional (n=27)
Does elevated cardiorespiratory fitness alter dynamic cerebral autoregulatory capacity during changes in mean arterial pressure in males?
Absolute Event Rate: 3.1% vs 1.5%
p-value: p=0.03
Individuals with elevated cardiorespiratory fitness exhibit an attenuated capability of the cerebral vasculature to counter rapid and large changes in mean arterial pressure, despite intact responses to spontaneous oscillations.
Labrecque et al. (2017) conducted a cross-sectional in Elevated cardiorespiratory fitness (n=27). Elevated cardiorespiratory fitness (endurance athletes) vs. Recreational controls was evaluated on Onset of regulation (time delay before an increase in middle cerebral artery conductance) after sit-to-stand (p=0.03). Elevated cardiorespiratory fitness in endurance athletes was associated with a delayed onset of cerebral autoregulation after sit-to-stand compared to controls (3.1 vs. 1.5 sec; P=0.03).
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