Key result
Increasing age was associated with a consistent decrease in total power of heart rate variability from ages 10+ to 80+ years (P < .001), demonstrating a greater impact than sex.
Population
470 subjects without cardiovascular conditions, divided by age into 10-year intervals and by sex.
Design
Cross-sectional
Authors
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May guide age-adjusted HRV norms; leaves open prospective validation of prognostic value.
Cross-Sectional (n=470)
p-value: p=<.001
Age significantly decreases heart rate variability, having a greater impact than sex, which helps establish normal HRV ranges for different demographic groups.
John H. Zhang (2007) conducted a cross-sectional in Healthy subjects (n=470). Age and sex vs. Different age and sex groups was evaluated on Heart rate variability (total power) (p=<.001). Increasing age was associated with a consistent decrease in total power of heart rate variability from ages 10+ to 80+ years (P < .001), demonstrating a greater impact than sex.
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