김수연1, 김은성2, 조정호1

1숙명여자대학교 일반대학원 체육학과 스포츠의학실, 2연세대학교 교육과학대학 스포츠레저학과

Background: The purpose of this study was to analyze the relationships between cardiorespiratory fitness and
body mass index (BMI), metabolic syndrome risk factors, homeostasis model assessment-insulin resistance
(HOMA-IR), and high sensitivity C-reactive protein (hsCRP) in male high school students in Korea. Furthermore,
the effects of the cardiorespiratory fitness levels on these four factors were examined.
Methods: The level of cardiorespiratory fitness, BMI, percent body fat, waist circumference (WC), systolic blood
pressure, glucose, triglycerides (TG), high-density lipoprotein-cholesterol (HDL-C), HOMA-IR, and hsCRP of
227 male high school students were measured. Analyses of multiple correlation and simple regression were
applied.
Results: The results showed that the level of cardiorespiratory fitness correlated negatively with BMI, percent
body fat, WC, TG, and HDL-C, in addition to HOMA-IR and hsCRP, and strongly influenced BMI, percent body
fat, WC, TG, HDL-C, HOMA-IR, and hsCRP. Comparative analysis of our subjects showed that higher cardiorespiratory
fitness levels had positive effects on BMI, metabolic syndrome risk factors, HOMA-IR, and hsCRP.
Conclusions: This study found that there are close correlations between cardiorespiratory fitness and BMI, metabolic
syndrome risk factors, HOMA-IR, and hsCRP. It also showed that, compared to lower levels of cardiorespiratory
fitness, higher levels had beneficial effects on BMI, metabolic syndrome risk factors, diabetes, and cardiovascular
disease risk factors.
Keywords: Body mass index, Cardiovascular disease, Insulin, Physical fitness, Adolescents