Key result
Ultra-short heart rate variability recordings of 120 seconds for the stress score (rho = 0.90) and 90 seconds for the sympathetic/parasympathetic ratio (rho = 0.93) were equivalent to standard 5-minute recordings.
Why the study?
Five-minute short-term heart rate variability records are considered very extensive compared to other health indicators, motivating the search for ultra-short records under 5 minutes that remain equivalent.
Are ultra-short heart rate variability recordings (60-240 seconds) equivalent to standard 5-minute recordings for measuring SS and SPS indexes in healthy subjects?
Population
A group of subjects
Comparison
Ultra-short recordings of 60, 90, 120, 180, and 240 seconds vs 300-second gold standard
Design
Concordance analysis study
Authors
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May facilitate routine HRV assessment in practice; leaves open prospective validation before adoption.
Observational (n=23)
No
Are ultra-short heart rate variability recordings (60-240 seconds) equivalent to standard 5-minute recordings for measuring SS and SPS indexes in healthy subjects?
Effect estimate: rho = 0.90 for SS at 120s; rho = 0.93 for SPS at 90s
p-value: p=3.28e-06 for SS; 3.15e-06 for SPS
Ultra-short heart rate variability recordings of 90-120 seconds can accurately estimate autonomic balance indexes compared to standard 5-minute recordings, potentially increasing the clinical and sports utility of HRV monitoring.
Gallardo et al. (2021) conducted an observational in Healthy (n=23). Ultra-short heart rate variability recordings (60-240 seconds) vs. 5-minute short-term heart rate variability (Gold Standard) was evaluated on Concordance of ultra-short HRV indexes (SS at 120s and SPS at 90s) with 5-minute Gold Standard (rho = 0.90 for SS at 120s; rho = 0.93 for SPS at 90s, p=3.28e-06 for SS; 3.15e-06 for SPS). Ultra-short heart rate variability recordings of 120 seconds for the stress score (rho = 0.90) and 90 seconds for the sympathetic/parasympathetic ratio (rho = 0.93) were equivalent to standard 5-minute recordings.
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