Fennell, Christopher, Mauger, Alexis R., Hopker, James G. (2023) Inter-day reliability of heart rate complexity and variability metrics in healthy highly active younger and older adults. European Journal of Applied Physiology, 124 (5). pp. 1409-1424. ISSN 1439-6319. E-ISSN 1439-6327. (doi:10.1007/s00421-023-05373-3) (KAR id:103906)
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Official URL: https://doi.org/10.1007/s00421-023-05373-3 |
Abstract
To investigate the inter-day reliability of time-domain, frequency-domain, and nonlinear HRV metrics in healthy highly active younger and older adults. The study also assessed the effect of age on the HRV metrics. Forty-four older adults (34 M, 10F; 59 ± 5 years; [Formula: see text] = 40.9 ± 7.6 ml kg min ) and twenty-two younger adults (16 M, 6F; 22 ± 4 years; [Formula: see text] = 47.2 ± 12.8 ml kg min ) attended the laboratory. Visit one assessed aerobic fitness through an exercise test. In visits two and three, participants completed a 30-min supine RR interval measurement to derive the HRV metrics. The younger group (YG) and older group (OG) demonstrated poor to good day-to-day relative and absolute reliability for all HRV metrics (OG, ICCs = 0.33 to 0.69 and between day CVs = 3.8 to 29.2%; YG, ICCs = 0.37 to 0.93 and between day CVs = 3.5 to 36.5%). There was a significant reduction in ApEn (P < 0.001), SampEn (P = 0.031), RMSSD (P < 0.001), SDNN (P < 0.001), LF power (P < 0.001) and HF power (P < 0.001), HRV metrics with ageing. There was no significant effect of age the complexity metrics DFA α1 (P = 0.107), α2 (P = 0.147) and CI-8 (P = 0.493). HRV metrics are reproducible between days in both healthy highly active younger and older adults. There is a decline in linear and nonlinear HRV metrics with age, albeit there being no age-related change in the nonlinear metrics, DFA α1, α2 and CI-8.
Item Type: | Article |
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DOI/Identification number: | 10.1007/s00421-023-05373-3 |
Uncontrolled keywords: | Complexity, Ageing, Reproducibility, Heart rate |
Subjects: | G Geography. Anthropology. Recreation > GV Recreation. Leisure > Sports sciences |
Divisions: | Divisions > Division of Natural Sciences > Sport and Exercise Sciences |
Funders: | University of Kent (https://ror.org/00xkeyj56) |
Depositing User: | James Hopker |
Date Deposited: | 14 Nov 2023 13:38 UTC |
Last Modified: | 29 Apr 2024 14:00 UTC |
Resource URI: | https://kar.kent.ac.uk/id/eprint/103906 (The current URI for this page, for reference purposes) |
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