Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effects of Indoor and Outdoor Exercise Environments on Bone Mineral Density and Body Composition in Old Women

실내·외 운동 환경의 차이가 노년기 여성의 골밀도와 신체구성에 미치는 영향

  • Received : 2012.06.26
  • Accepted : 2012.08.09
  • Published : 2012.08.30
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Abstract

The purpose of this study is to investigate the effects of indoor and outdoor exercise environments on bone mineral density and body composition in old women. A total of 26 old women were randomly divided into two groups: an indoor exercise group (IE, n=13) and an outdoor exercise group (OE, n=13). The exercise groups performed moderate exercise (HR max 50~70%; RPE 11-15) three times a week for 60 minutes over 20 weeks. After exercise training, bone mineral density was significantly improved in the OE group as compared with the IE group. Body fat mass was significantly decreased in the IE group. Weight, lean body mass, and body fat mass were significantly decreased in the OE group. Body mass index was significantly decreased in the outdoor exercise group as compared to the IE group. Our findings show that a 20-week program of outdoor exercise training improves bone mineral density and body composition in old women. As mentioned above, it has been found that engaging in an outdoor exercise program for 20 weeks has a positive effect on bone mineral density and body composition in old women. In conclusion, engaging in the outdoor exercise program, including aerobic and resistance exercises, for 20 weeks improved bone mineral density and inhibited bone loss in old women and had a positive influence on vitamin D levels, thereby potentially lowering the risk of osteoporosis.

본 연구는 실내 외 운동 환경의 차이가 노년기 여성의 골밀도와 신체구성에 미치는 영향을 규명하는데 그 목적이 있다. 연구대상은 65세 이상 노년기 여성으로 실내운동집단 13명, 실외운동집단 13명 두 그룹으로 나누었으며, 20주간 운동프로그램을 실시하였다. 운동강도는 주3회, 1회 60분 동안 HRmax 50~70%, RPE 11~15로 점진적으로 증가시켰다. 결과는 다음과 같다. 첫째, 골밀도의 결과 집단 내 변화에서는 실외운동집단에서 유의하게 증가하였고, 집단 간 변화에서는 실외운동집단이 실내운동집단보다 유의하게 증가하였다. 둘째, 신체구성의 결과 집단 내 변화에서는 실내운동집단에서 체지방량이 유의하게 감소하였고, 실외운동집단에서 체중, 체질량지수, 체지방량이 유의하게 감소하였다. 집단 간의 변화에서는 체질량지수에서 실외운동집단이 실내운동집단보다 유의하게 감소하였다. 이와 같은 연구 결과들을 살펴볼 때 20주간 실외운동환경에서의 운동프로그램은 골밀도와 신체구성에 긍정적인 영향을 미친 것으로 나타났다.

Keywords

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