Differences in heart rate variability between Asian and Caucasian children living in the same Canadian community

Reed, Katharine E., Warburton, Darren E. R., Whitney, Crystal L. and McKay, Heather A. (2006) Differences in heart rate variability between Asian and Caucasian children living in the same Canadian community. Applied Physiology, Nutrition, and Metabolism, 31 3: 277-282. doi:10.1139/H05-015


Author Reed, Katharine E.
Warburton, Darren E. R.
Whitney, Crystal L.
McKay, Heather A.
Title Differences in heart rate variability between Asian and Caucasian children living in the same Canadian community
Journal name Applied Physiology, Nutrition, and Metabolism   Check publisher's open access policy
ISSN 1715-5312
1715-5320
Publication date 2006-06
Sub-type Article (original research)
DOI 10.1139/H05-015
Volume 31
Issue 3
Start page 277
End page 282
Total pages 6
Place of publication Ottawa, Canada
Publisher N R C Research Press
Language eng
Subject 111712 Health Promotion
Abstract Heart rate variability (HRV) is an umbrella term for a variety of measures that assess autonomic influence on the heart. Reduced beat-to-beat variability is found in individuals with a variety of cardiac abnormalities. A reduced HRV positively correlates with obesity, poor aerobic fitness, and increasing age. Racial (black–white) differences are apparent in adults and adolescents. We aimed to evaluate (i) Asian–Caucasian differences in HRV and (ii) differences in HRV between girls and boys. Sixty-two children (30 male (15 Caucasian, 15 Asian) and 32 female (15 Caucasian, 17 Asians)) with a mean age of 10.3 ± 0.6 y underwent 5 min resting HRV recording, fitness testing (Leger’s 20 m shuttle), and self-assessed maturity. Outcome HRV measures were a ratio of low to high frequency power (LF:HF), standard deviation of R–R intervals (SDRR) and root mean square of successive R–R intervals (RMSSD). Data were compared between groups using analysis of covariance (ANCOVA). There were no race or sex differences for time domain variables, mean R–R, body mass index, or blood pressure. Compared with Caucasian children, Asian children displayed a higher adjusted (fitness, R–R interval) LF:HF ratio (72.9 ± 59.4 vs. 120.6 ± 85.3, p < 0.05). Girls demonstrated a higher adjusted LF:HF power than boys (117.2 ± 85.1 vs. 76.6 ± 62.4, p = < 0.05). In conclusion, Asian and Caucasian children display different frequency domain components of heart rate variability.
Keyword Autonomic nervous system
Sympathetic
Vagal
Race
Aerobic fitness
Sex
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Human Movement and Nutrition Sciences Publications
 
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