Heart Rate Variability in Taiwanese Obese Children

作者：Chen Fu, Yin Ming Li, Dee Pei, Chien Lin Chen, Huey Ming Lo, Du An Wu, Terry B.J. Kuo · 发表于：Tzu Chi Medical Journal · 年份：2006 · DOI：10.6440/tzucmj.200606.0199 · 被引用次数：5 · 研究领域：Heart Rate Variability and Autonomic Control、Cardiovascular and exercise physiology、Heart rate and cardiovascular health

Objective: The primary purpose of the present community-based study was to investigate early changes in cardiac autonomic function in obese children. Materials and Methods: A survey of juvenile obesity in Hualien in eastern Taiwan was performed in 2002. A total of 1,724 adolescents who were 12 or 13 years old were recruited. The overall prevalences of normal weight, overweight and obese adolescents were 71.5% 13.1%, and 15.4%, respectively. A stratified random sampling scheme was performed. We selected 100, 50 and 75 subjects from the above-mentioned three groups, and invited them to join this study. Totally, 170 students (normal-weight: overweight: obese=81:34:55) participated in this study. They received blood checks and a heart rate variability (HRV) examination. The homeostasis model assessment of insulin resistance (HOMA-IR) was used to evaluate insulin sensitivity. Results: Compared with the normal-weight group, the obese children had significantly elevated body mass indexes (BMI), HOMA-IR, and systolic and diastolic blood pressure levels. In addition, compared to their normal weight counterparts, obese children had significantly reduced high-frequency power (HF) but elevated low-frequency power in normalized units (LF%), and elevated ratios of low-frequency power to high-frequency power (LF/HF ratio). Further analyses revealed that compared with the normal weight counterparts; obese boys had significantly reduced HF but elevated LF % and LF/HF ratios. Among obese girls...