Key result
Age was the most important physiological correlate of the phase relationship between respiratory oscillations of the RR interval and systolic blood pressure (r = 0.48, P<0.001).
Why the study?
Does age affect the phase relationship between respiratory oscillations of the RR interval and systolic pressure in healthy subjects?
Population
92 healthy subjects (44 men) aged 10-80 years
Design
Cross-sectional
Authors
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Age-associated phase shifts warrant no clinical action; hypothesis-generating for cardiorespiratory coupling mechanisms.
Cross-Sectional (n=92)
Does age affect the phase relationship between respiratory oscillations of the RR interval and systolic pressure in healthy subjects?
Effect estimate: r = 0.48
p-value: p=<0.001
Age is a significant independent correlate of the phase relationship between respiratory-related oscillations of the RR interval and systolic blood pressure, providing additional information on cardiovascular rhythm mechanisms.
Pitzalis et al. (2000) conducted a cross-sectional in Healthy subjects (n=92). Age was evaluated on Spectral phase between RR interval and systolic pressure oscillations synchronous with respiration (r = 0.48, p=<0.001). Age was the most important physiological correlate of the phase relationship between respiratory oscillations of the RR interval and systolic blood pressure (r = 0.48, P<0.001).
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