저항운동이 폐경 전·후 비만여성의 신체구성, 골밀도 및 아디포사이토카인에 미치는 영향
Effect of Resistance Training on Body Composition, Bone Mineral Density and Adipocytokine in Obese Perimenopausal Women
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이 연구는 폐경 전·후 신체의 변화가 급격히 일어나는 비만 중년 여성들에 있어 16주간의 고강도 저항운동이 아디포사이토카인과 골밀도의 변화에 어떠한 영향을 미치는지를 알고자하였다. 이를 위하여 폐경 전 10명, 폐경 후 10명의 비만여성을 대상으로 16주간 일일 60분, 주 3회의 저항운동을 75%1RM에 해당되는 운동강도로 실시하였다. 그 결과 트레이닝 후 체중, BMI, 체지방량 및 허리둘레의 유의한 감소와 제지방량의 유의한 증가가 나타났으며, 에스트로겐은 집단 간 유의한 차이를 나타내었다. 트레이닝 후 렙틴과 TNF-α는 유의하게 감소되었으며, 대퇴경부 BMD는 집단 간, 시기 간 유의한 차이를 나타내었으며, 근위고관절 BMD는 집단 간 유의한 차이가 나타났다. 또한 트레이닝 후 아디포넥틴의 변화는 대퇴 전자부(r=.657, p=.002)와 근위 고관절(r=.476, p=.034) BMD의 변화와 유의한 상관관계를 보였으며, 골밀도의 변화를 위한 예측 변수로서 각각 58%와 28%의 설명력을 가지고 있는 것으로 나타났다. 이상의 결과를 종합해 볼 때, 비만 여성들의 16주 저항운동은 체중 및 체지방량의 감소, 제지방량의 증가, 렙틴과 TNF-α의 감소 및 대퇴경부 골밀도의 증가에 영향을 미치는 것으로 나타났으나, 이러한 운동의 효과는 폐경 상태에 의해 영향을 받지 않는 것으로 나타났다. 또한, 운동에 의한 아디포넥틴의 변화는 BMD의 변화를 예측하는 중요한 결정요인으로서 고려된다.
Abstract
The purpose of this study was to investigate the effect of 16 weeks high intensity resistance training on the relation of body composition, adipocytokines, and bone mineral density(BMD) in obese perimenopausal women. Middle aged obese pre(n=10) and post(n=10) menopausal women volunteered for this study. Resistance training consisted of 3sets with 75% 1RM intensity for 16 week (3days per week). Body weight, BMI, body fat mass, and waist circumference were decreased whereas lean body mass was increased significantly. Leptin and TNF-α were significantly decreased after exercise training. Femoral neck BMD was significantly different in group and time. Proximal total hip BMD was significantly different between groups. After training the changes of trochanter(r=.657, p=.002) and proximal total hip BMD(r=.476, p=.034) were significantly correlated to the changes of adiponectin. In addition, the changed adiponectin was an important predict variation to femoral neck BMD(p<.001) and proximal total hip BMD(p<.05). In summary, 16 weeks high intensity resistance training had a moderately favorable effect on BMD with improved body composition and decreased leptin level. However, it does not seem that the effect of exercise training on these adipocytokines and BMD is influenced by menopausal status in obese women. Furthermore, it suggested that exercise-induced changes of adiponectin is an independent predictor of changed BMD.
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