Abstract

본 연구에서는 12주간 비알코올성 지방간을 가진 비만아동을 대상으로 유산소 운동군과 짐볼 운동군으로 나누어 운동을 실시한 결과 체중, BMI, 체지방율이 유의하게 감소하였다. 또한 Adiponectin의 증가와 Leptin의 감소로 인해 인슐린저항성과 혈당, 인슐린 농도도 유의하게 감소하는 것으로 나타났다. 또한 이러한 Adipokine들의 긍정적인 기능들로 인하여 비알콜성 지방간을 평가하는 간 기능 평가지수인 AST와 ALT도 감소하는 것으로 나타났다. 결론적으로 비알코올성 지방간을 가진 비만아동뿐만 아니라 비알코올성 지방간 환자에 있어 유산소운동 뿐만 아니라 짐볼 운동에서도 운동효과가 유사하게 나타났으므로 규칙적인 운동은 심폐체력 증진 및 혈중지질의 감소와 함께 혈중 Adiponectin 발현을 증가시킴으로서 인슐린저항성 개선을 통하여 비알코올성 지방간 기능 개선 뿐만 아니라 비만으로 인한 당뇨병, 심혈관 질환 발병의 예방에도 도움이 될 수 있을 것으로 기대된다. The aim of the present study was to investigate effects of a 12-week aerobic exercise training program and a gym-ball exercise training program on body composition, aspartate aminotransferase (AST), alanine aminotransferase (ALT), adipokines, and cardiovascular risk factors in obese children with nonalcoholic fatty liver disease. The subjects were separated into two groups, an aerobic exercise group (n=10), which practiced moderate aerobic exercise training for 12 weeks, and a gym-ball exercise group (n=13), which practiced resistance exercise training for 12 weeks. The results of the analyses are as follows: Weight, body mass index, and body fat were significantly lower (p<0.01, respectively), whereas the <TEX>$VO_2$</TEX> max was higher in both groups (p<0.01). Fasting glucose, insulin and HOMA-IR levels were significantly decreased in the gym-ball exercise group (p<0.05), whereas adiponectin, AST, and ALT levels were significantly increased (p<0.05, p<0.001, p<0.001, respectively) in both groups after the 12-week exercise training program. In addition, our results showed that HOMA-IR, insulin, and concentrations of C-reactive protein (CRP) were significantly lower in both groups. They demonstrate that a 12-week program of regular aerobic exercise or gym-ball exercise yields beneficial effects such as an amelioration of cardiovascular risk factors, body indices, and liver function in obese children with nonalcoholic fatty liver disease.

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