Earticle

초록

영어

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.

목차

Abstract
INTRODUCTION
MATERIALS AND METHODS
Subjects and study design
Exercise intervention
Anthropometrics and body composition measurements
VO2peak measurement
HRV recordings and analysis
Statistical analysis
RESULTS
DISCUSSION
CONFLICT OF INTEREST
ACKNOWLEDGMENTS
REFERENCES

키워드

저자

• Jatuporn Phoemsapthawee [ Department of Sports Science and Health, Faculty of Sports Science, Kasetsart University, Nakhon Pathom, Thailand ]
• Piyapong Prasertsri [ Faculty of Allied Health Sciences, Burapha University, Chonburi, Thailand ]
• Naruemon Leelayuwat [ Department of Physiology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand, Exercise and Sport Sciences Development and Research Group, Khon Kaen University, Khon Kaen, Thailand ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  JER [Journal of Exercise Rehabilitation]

• 간기

  격월간

• pISSN

  2288-176X

• eISSN

  2288-1778

• 수록기간

  2013~2026

• 등재여부

  SCOPUS,KCI 등재

• 십진분류

  KDC 517 DDC 613