https://scholars.lib.ntu.edu.tw/handle/123456789/505053
Title: | Association of physical capacity with heart rate variability based on a short-duration measurement of resting pulse rate in older adults with obesity | Authors: | Liao C.-D. JAU-YIH TSAUO Hsiao D.-J. Liou T.-H. Huang S.-W. Lin L.-F. |
Issue Date: | 2017 | Publisher: | Public Library of Science | Journal Volume: | 12 | Journal Issue: | 12 | Start page/Pages: | e0189150 | Source: | PLoS ONE | Abstract: | Background Obesity can limit physical capacity and lower physical activity levels in elderly people. Low physical activity levels may be mediated by autonomic dysfunction with decreased heart rate variability (HRV). However, the relationship between autonomic dysfunction and low physical capability remains unclear. This cross-sectional study investigated the association of low physical capability with HRV in older adults with obesity. Materials and methods We recruited 231 old man and 210 old women with a mean (range) age of 65.5 (51?78) and 62.9 (52?76) years, respectively. Physical capability was measured using mobility tasks, including functional reach, single-leg stance (SLS), gait speed (GS), timed up and go, and timed chair rise (TCR), and the scores on these tasks were merged and transformed into a global physical capability score (GPCS). HRV was measured using a 7-min resting pulse-based technique, and the time- and frequency-domain indices of HRV were obtained including standard deviation of normal-to-normal intervals (SDNN), root mean square of successive differences at rest (rMSSD), and high-frequency (HF) power. All HRV indices were natural log (ln) transformed for analysis. Participants were divided into high, moderate, and low physical-capability groups according to their physical performance. Multivariate analysis of covariance was performed to test differences in HRV indices among physical-capability groups with participants’ characteristics serving as covariates. A stepwise regression model was established to identify the determinants of HRV indices. We used hierarchical regression analysis to identify the association of the GPCS with HRV indices. Results In both men and women, the low physical-capability group exhibited significantly increased heart rate (P <0.05) and decreased HRV in terms of a decreased ln[SDNN] (P <0.001), ln [rMSSD] (P <0.05) and ln[HF] (P <0.05), compared with the high physical-capability group. GS positively predicted ln[SDNN], whereas SLS, GS, and TCR were determinants of ln[HF], regardless of gender. The GPCS in older men and women independently accounted for 29.9% (P <0.001) and 23.7% (P <0.001), respectively, in variance in ln[SDNN]. Conclusions A low physical-capability level is an independent determinant of decreased HRV in older adults with obesity. ? 2017 Liao et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85038941938&doi=10.1371%2fjournal.pone.0189150&partnerID=40&md5=bf756e051fc251703dc8ec89009ca2f6 https://scholars.lib.ntu.edu.tw/handle/123456789/505053 |
ISSN: | 1932-6203 | DOI: | 10.1371/journal.pone.0189150 | SDG/Keyword: | adult; age distribution; aged; Article; body mass; cardiovascular disease assessment; controlled study; correlational study; cross-sectional study; disease association; electrocardiogram; female; functional reach; gait speed; global physical capability score; heart rate measurement; heart rate variability; human; major clinical study; male; obesity; observational study; physical capacity; physical performance; pulse rate; questionnaire; resting pulse rate; scoring system; sex difference; single leg stance; timed chair rise; timed up and go; exercise; heart rate; middle aged; physiology; Aged; Exercise; Female; Heart Rate; Humans; Male; Middle Aged |
Appears in Collections: | 物理治療學系所 |
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