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Int J Sports Med 2009; 30(10): 733-740
DOI: 10.1055/s-0029-1224173
Training & Testing

© Georg Thieme Verlag KG Stuttgart · New York

Interaction Between Fatness and Fitness on CVD Risk Factors in Asian Youth

Y. Jekal1 [*] , E. S. Kim1 [*] , J. A. Im2 , J. H. Park1 , M. K. Lee1 , S. H. Lee1 , S. H. Suh3 , S. H. Chu4 , E. S. Kang5 , H. C. Lee5 , J. Y. Jeon1
  • 1Department of Sport and Leisure Studies, Yonsei University, Seoup, Republic of Korea
  • 2Department of Sport Medicine Research Center, INTOTO Inc., Seoul, Republic of Korea
  • 3Department of Physical Education, Yonsei University, Seoul, Republic of Korea
  • 4College of Nursing, Yonsei University, Seoul, Republic of Korea
  • 5Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
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Publication History

accepted after revision 26.04.2009

Publication Date:
22 September 2009 (online)

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Abstract

The purpose of this study was to investigate the effects of fatness and fitness on insulin resistance (IR) and cardiovascular disease (CVD) risk factors among Korean adolescents. A total of 322 male high school students participatedDepartme nt of Sport and Leisure Studies, Yonsei University, Seoup, Republic of KoreaDepartment of Sport and Leisure Studies, Yonsei University, Seoup, Republic of Korea in the cross-sectional part of the study. To determine the interaction of fatness and fitness levels on IR and CVD risk factors, subjects were stratified into four groups based on their body mass index (BMI) and cardio-respiratory fitness. Subjects who were in the high-fat category had significantly higher IR and CVD risk score than subjects in the low-fat category regardless of their fitness level. Subjects who were in high-fat-high-fit group showed significantly lower IR and CVD risk score than high-fat-low-fit group. Twenty-nine obese and unfit subjects participated in the intervention study. Twelve weeks of exercise training significantly reduced body weight (4.11±0.75 kg) and improved VO2max which resulted in a significant improvement in IR and CVD risk score (2.16±0.62 vs. 0.20±0.75). Interestingly, improvement in cardio-respiratory fitness and small reduction in body weight in relatively short-term significantly reduced the CVD risk score to the level of low-fat-low-fit subjects. Our results show the importance of fitness in determining IR and CVD risk factors among obese adolescents.

Key words

obesity - fitness - CVD - adolescents - insulin resistance

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1 Authors contribute to this work equally

Correspondence

Prof. J. Y. Jeon

Department of Sport and Leisure Studies

Yonsei University

Seodaemun-Gu

Shinchon-Dong 134

120-749 Seoul

Republic of Korea

Phone: 82/02/2123 61 97

Fax: 82/02/2123 86 48

Email: jjeon@yonsei.ac.kr

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