분할운동이 중년비만여성의 체력, 비만관련 변인, 운동욕구 및 탈락률에 미치는 영향
Effects of short bout exercise on physical fitness, obesity related variables, desire to exercise, and drop out rate in middle-aged obese women
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이 연구는 중년비만여성을 대상으로 실시 한 분할운동이 체력, 비만관련 변인, 운동욕구 및 운동탈락률에 미치는 영향을 구명하는 것이다. 피험자는 총 64명의 중년비만여성(47.17±5.11세) 이었다. 1회 분할운동군(n=22)은 하루에 30분씩 1차례, 2회 분할운동군(n=22)은 하루 15분씩 2차례, 3회 분할운동군(n=20)은 하루에 10분씩 3차례의 운동을 실시하였다. 모든 피험자는 하루 운동량이 200kcal로 제한되었고, 운동 빈도는 일주일에 3회였으며, 총 12주 동안 걸쳐 유산소성(70~85 %VO2max) 걷기 운동 프로그램을 수행하였다. 사전·사후 검사에서 체력과 비만관련 변인들이 측정되었다. 또한 운동프로그램 지속여부(탈락률)가(이) 조사되었고 끝까지 훈련에 참여한 대상자에 대해서는 운동욕구에 관한 설문조사가 이루어졌다. 심폐지구력과 근지구력은 모든 집단에서 증가하였으나(p<.001) 집단 간의 차이는 없었고, 비만관련 모든 변인에서 운동의 효과가 나타났다(p<.001). 그러나 집단별로 상대적인 운동효과 검증을 실시 한 결과 3회 분할운동군의 경우 운동전후에 걸쳐 체중, 체질량지수, 체지방률, 체지방량의 운동효과가 나타나지 않았으며 특히, 체지방률과 체지방량의 경우 측정기간과 집단 간 상호작용효과까지 유의하였다(p<.05). 한편 3회 분할 운동군이 1회 또는 2회 분할 운동군 보다 과시욕구(p<.05) 및 사교욕구(p<.001)가 더 크게 나타났으며 운동프로그램 탈락률도 낮은 경향을 보였다. 결과적으로 2-3회 분할 운동은 체력향상 및 운동욕구증대 프로그램에 적용될 수 있겠지만 중년여성의 비만해소를 위한 운동을 위해서는 최대 2회 분할 운동까지 허용될 수 있다고 판단된다.
Abstract
The purpose of the study was to verify effects of several types of short bout exercise on physical fitness, obesity related variables, desire to exercise, and drop out rate in middle-aged obese women. 64 middle-aged obese women(47.17±5.11yrs) were randomly assigned to 3 groups: 1)one bout exercise group(n=22); 2)two bouts exercise group(n=22); and 3)three bouts exercise group(n=20). All subjects were asked to visit to exercise 3 times a week and required to consume 200kcal per day. Physical fitness and obesity related variables were measured in the pre-test and post-test of 12-week exercise program. And the questionnaire of desire to exercise was measured at the end of exercise program. In addition to, drop out rates of subjects in each group were observed. VO2max and muscular endurance were significantly(p<.001) higher in post-test than in pre-test but there was no effect of short bout exercise in these variables. Significant effect of exercise in obesity related variables was found(p<.001). But there was non-significant changes of means of some obesity related variables(weight, body mass index, %body fat, and body fat mass) in three short bouts exercise group but effect of interaction between treatment and groups in %body fat and body fat mass was significant(p<.05). Meanwhile 2 types of desire to exercise were significantly higher(p<.001,p<.05) and there was a trend of low drop out rate in three short bouts exercise group than two other groups. It was suggested that although 2~3 bouts exercise programs might be recommended for health and fitness promotion, but 1 longer or 2 short bouts exercise can be prescribed in weight control program for middle-aged women.
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