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자료유형
학술저널
저자정보
Jatuporn Phoemsapthawee (Kasetsart University) Piyapong Prasertsri (Burapha University) Naruemon Leelayuwat (Khon Kaen University)
저널정보
한국운동재활학회 Journal of exercise rehabilitation Journal of exercise rehabilitation Vol.15 No.1
발행연도
2019.1
수록면
114 - 122 (9page)

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Although the influence of adiposity indices and cardiorespiratory fitness (CRF) on heart rate variability (HRV) has been demonstrated extensively, the causal link between the changes in adiposity as well as in CRF and the alterations in cardiac autonomic function is unclear. Thus, this study aimed to assess the correlation between the changes in adiposity and CRF and the alterations in HRV after 12-week exercise training. Twenty obese sedentary men aged 20.5±1.2 years were randomly assigned into 2 groups (n=10 each): the control (CG) and the exercise group (EG). The EG trained 60 min of combined aerobic, anaerobic and strengthen-ing exercise, 4 sessions/wk for 12 weeks, whilst the CG remained rela-tively inactive. Measurements of resting HRV, body composition, and peak oxygen consumption (VO2peak) were obtained at baseline and after the 12-week training program. Compared with CG, the exercise training significantly reduced adiposity indices and improved vagal-related HRV variables and VO2peak. Significant correlations were observed between changes in HRV variables and adiposity indices and VO2peak changes. Stepwise regression analysis revealed that changes in a Poincaré plot index (SD1/SD2 ratio) predicted 32.4% of the variance in the relative VO2peak changes. These findings suggest that obese sedentary young men achieved significant improvements in vagal activity, adiposity indi-ces and aerobic fitness after the exercise training. The higher reduction in fat mass, especially central obesity, the greater alteration of vagal modulation. Moreover, the alteration in resting HRV is a possible predic-tor for adaptations to exercise training in obese sedentary young men.

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