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Reference values for short‐term resting‐state heart rate variability in healthy adults: Results from the Brazilian Longitudinal Study of Adult Health—ELSA‐Brasil study
Author(s) -
Dantas Eduardo Miranda,
Kemp Andrew Haddon,
Andreão Rodrigo Varejão,
da Silva Valdo José Dias,
Brui André Russowsky,
Hoshi Rosangela Akemi,
Bensenor Isabela Martins,
Lotufo Paulo Andrade,
Ribeiro Antonio Luiz Pinho,
Mill José Geraldo
Publication year - 2018
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/psyp.13052
Subject(s) - percentile , heart rate variability , psychology , heart rate , cardiology , standard deviation , demography , medicine , blood pressure , statistics , mathematics , sociology
Heart rate variability (HRV) is a psychophysiological phenomenon with broad implications, providing an accessible index of vagal function, underpinning psychological constructs, including the capacity for social engagement and emotion regulation, and may predict future morbidity and mortality. However, the lack of reference values for short‐term HRV indices for participants of both sexes across the age spectrum is a limiting factor. This was the objective of the present study. Resting electrocardiographic records were obtained from 13,214 participants (both sexes, 35–74 years), and HRV indices in time and frequency domains (mean ± SD ) were determined from 5‐min records. Results were based on a subsample of 2,874 nonmedicated, healthy participants stratified by sex across 10‐year age groupings. Men showed lower heart rate (HR, 64 ± 8 bpm vs. 68 ± 8 bpm, p < .05) and normalized high frequency (HF; 39.4 ± 18.0 normalized units [n.u.] vs. 50.4 ± 18.5 n.u., p < .05) than women, and higher N‐N variance (2,214 ± 1,890 ms 2 vs. 1,883 ± 1,635 ms 2 , p < .05), standard deviation of all N‐N intervals (SDNN; 43.7 ± 17.3 ms vs. 40.3 ± 15.8 ms, p < .05) and LF/HF (2.30 ± 2.68 vs. 1.33 ± 1.82, p < .05). HR and HF (n.u.) were also higher in younger than older women. LF/HF was lower in women than men. Percentile curves showed almost all HRV indices decreasing with aging. The availability of short‐term, resting‐state HRV reference values in a large sample of healthy and nonmedicated participants from 35–74 years will provide a valuable tool for researchers, clinicians, and those in the quantified‐self community.