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크롬섭취 수준에 따른 복합운동프로그램 참여가 비만초등학생의 신체조성, 체력, 식욕조절 호르몬 및 당뇨위험요인에 미치는 영향

Influence of complex exercise and chromium supplement on health-related physical fitness, appetite regulating hormones,and diabetes risk factors in obese elementary students

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[목적] 본 연구의 목적은 크롬섭취 수준에 따른 복합운동프로그램 참여가 비만초등학생의 신체조성, 체력, 식욕조절 호르몬 및 당뇨위험요인에 어떠한 영향을 미치는지를 규명하는데 있다.[방법] 본 연구의 참여대상자는 체질량지수가 25 kg/m2 이상인 초등학교 남학생 32명을 선정하였으며, 복합운동 및 고크롬섭취군(CE+HC) 8명, 복합운동 및 저크롬섭취군 8명(CE+LC), 복합운동 및 위약섭취군 8명(CE+PL), 위약섭취군(PL) 8명으로 구성하여 실험을 수행하였다. 본 실험에서 사용한 복합운동프로그램은 유산소성운동과 저항성운동을 혼합, 구성하여 12주간의 과정으로 수행시켰고, 모든 피험자는 주 3회, 매 70분간 실시하였다. 준비운동과 정리운동은 각 10분, 본 운동으로서 자전거 에르고미터, 트레드밀, 암에르고미터를 이용한 유산소성운동과 웨이트트레이닝과 탄성밴드운동으로 구성된 저항성운동은 50분간 실시하였다. 연구자는 모든 참여대상자에게 정제된 크롬약과 위약을 매일 일정한 시간에 동일한 장소에서 섭취시켰고, 저크롬섭취군과 고크롬 섭취군은 매일 각각 50ug, 400ug의 크롬정제를 섭취한 후, 체중, 체질량지수, 체지방률, 근육량, 근력, 근지구력, 유연성, 렙틴, 그렐린, 글루코스, 인슐린을 측정하여 다음과 같은 결과를 얻었다. [결과] CE+HC그룹은 CE+PL그룹과 비교하여 체지방률의 유의한 감소결과를 나타내었고(p<.05), 근육량의 증가 현상을 나타내었지만(p<.05), 체중, 체질량지수, 근력, 근지구력, 유연성에서는 통계적으로 유의한 차이가 나타나지 않았다(p>.05). 식욕조절 호르몬의 하위요인인 렙틴은 CE+HC그룹에서 CE+PL그룹 및 PL그룹과 비교하여 유의한 감소결과를 나타내었지만(p<.05), 그렐린은 차이가 없었으며(p>.05), 당뇨위험요인에서, CE+HC그룹은 CE+PL 및 PL그룹과 비교하여 글루코스 및 인슐린의 유의한 감소결과를 나타내었다(p<.05). [결론] 결론적으로, 비만초등학생을 대상으로 실시한 복합운동과 고크롬섭취의 이중적용은 신체조성의 효과적인 조절을 통하여 신진대사작용에 긍정적인 변화를 유도함으로써 당뇨위험요인을 개선시켰지만, 체력 및 식욕조절 호르몬에는 영향을 미치지 않았다.

Abstract

[Purpose] The purpose of this study was to determine the influence of complex exercise and chromium supplement on healthe-related physical fitness, appetite regulating hormones, and diabetes risk factors in obese elementary school students. [Methods] The subjects were 32 obese elementary students over 25 kg/m2 to BMI, 8 complex exercise with high chromium supplement group (CE+HC), 8 complex exercise with low chromium supplement group (CE+LC), 8 complex exercise with placebo group (CE+PL), and 8 placebo group (PL). The subjects have performed the exercise program for 70 minutes a day and 3 times a week with aerobic and anaerobic exercise during 12 weeks. Also, low and high chromium supplement group took a peel 50 ug and 400 ug respectively at the same time and place. [Results] There were significant decreases in body fat to CE+HC compared with CE+PL (p<.05) and significant increase in muscle mass compared with CE+PL (p<.05). However, there were no significant differences in body weight, BMI, muscular strength, muscular endurance, and flexibility between groups. For appetite regulating hormones, there is a significant difference to ghrelin in CE+HC compared with CE+PL (p<.05) and there were significant differences to glucose and insulin significantly decreased in CE+HC compared with CE+PL (p<.05) in diabetes risk factors. [Conclusions] In conclusion, there were positive responses for body composition and diabetes risk factors for the twofold cases through complex exercise and high chromium supplement, but not for physical fitness and appetite regulating hormones.

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