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강문선, 김미숙, 박정준, 임정숙, 전영남, 김기봉, 이지혜, 양점홍(2007). 일본 노화학회
Background : The goals of an exercise programs are different for elderly adults. However, the most important things are focused on health and maintenance of function in order to pursue everyday activities safely and independently without undue fatigue. Jazzercise is Jazz dance exercise as the combination of Jazz and exercise. Jazzercise changes the Jazz, which requires professional and difficult techniques into easy, light, and practicable movements by using Korean popular music so that even aged people can easily practice it.
Purpose : This study was to investigate the effects of jazzercise on physical fitness and body composition, to strengthens function of aerobic capacity and muscular endurance through the appropriate jazzercise program in the elderly women.
Methods : subjects of this study were 60s and 70s (n= 22) who worked out at a senior center located at Seoul metropolitan area in South Korea. They were divided into two group that 60s (n=11, average= 64.63±3.10) and 70s (n=11, average=72.18± 2.27) group. The jazzercise program was designed RPE 11-13 of intensity, 40-60 minutes/day and 3 times/ week for 12 weeks. Fitness test items were muscular endurance (chair stand test, arm curl test), flexibility (back scratch, chair sit-and-reach test), balance (8-foot up-and -go test, and one-leged standing with closed eyes test) and aerobic capacity (6-minutes walk test). Body composition included %fat and LBM (lean body mass) for them. The collected data was analyzed by a statistical software (SPSS 12.0 version). Paired t-test and independent t-test were used to examine within and between group effects. A significant level was set at p〈.05.
Results : Both 60s and 70s groups significantly (p<.05) improved chair stand test, arm curl test, and chair sit-and-reach test after jazzercise. and, only 60s group showed significant (p<.05) improvements in back scratch test (right side), 6-minutes walk test, and one-leged standing with closed eyes test. 8-foot up-and-go test and body composition were not changed with exercise in both groups. Changes in all variables were not statistically different between these groups.
Conclusions : Jazzercise program had positive impacts on functional fitness in elderly women. Particularly, it helps improving muscular strength and lower limb flexibility. We suggest that Jazzercise can improve fitness of elderly women, regardless of age. However, researches need various and repetitive studies using more different targets or methods in the exercise program for its improvement in the 60s and 70s women.
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