중년여성의 신체활동이 폐기능ㆍ체력에 미치는 영향

Effect of Physical Activity on Pulmonary Function and Physical Fitness in Middle-Aged Women in Korea

The purpose of this study was to investigate the effect of physical activity on pulmonary function, and grip strength, back strength and whole reaction time of middle-aged Korean women. The subjects of 796 subjects were randomly selected and participated at Ansan Health Study, Korea University Medical Center in Korea. The subjects were divided into two groups. Exercise group has 338 individuals (aged 47.4±5.4 years) who have been exercising at least three times a week for more than 6 months. Non-exercise group has 431 individuals (aged 46.7±5.3 years) who have not been exercising currently. The pulmonary function Testing(sensor Medics 2130, USA) including forced vital capacity (FVC), forced expiratory volume (FEV) in the first second (FEVI), FVC/FEVI, maximal voluntary ventilation (MVV) and % MVV were evaluated. Physical fitness test included grip strength (Grip-D TKK5101, Japan.), back strength (Back-D, TKK5102 Japan) and whole reaction time (Whole Body Reaction Measuring Equipment, PKS1027, Korea). Questionnaire was used to evaluate the exercise patterns including intensity, mode, duration and period of subjects. Statistical analyses were performed using the paired t-test, univariate, ANOVA and Sheffe analyses with SPSS package. The results of this study thought this method and process can be summarized as follows. Grip strength, back strength, whole reaction time, MVV and % MVV (P＜0.05) in exercise group were significantly (p＜0.001) higher than those of non-exercise group. In exercise group, significantly increased grip strength, back strength (p＜0.001) and % MVV (P＜0.05) were found in subjects who exercised in more than 3METs for a day compared with those of subjects in less than 1 METs for a day, respectively. With regard to exercise mode such as walking, swimming significantly (p＜0.05) increased MVV and % MVV, also back strength, grip strength and reaction time were significantly in weight-bearing exercise than the other exercise mode.