Background
: With improvement of Medicine, prevalence of acute, infectious disease declined and Incidence of Coronary artery disease increased, in Korea. The causes of this finding are bad lifestyles, for example eating habit, insufficient physical activity and fitness, smoking and these are the major risk factors of chronic disease. Recent data suggest the important effect of physical activity and fitness on prevention of chronic disease. This study will show the frequency of leisure time physical activity and characteristics of people in Seoul according to physical activity.
Method: A modified version of Minnesota Leisure Time Physical Activity Assessment was adminis-tered to the people selected by Randm Digit Dialing, Mitofsky-Waksberg method from May to August, 1995. This report focused on time spent in specific activities during previous month and questions asked included frequency per month of engaging in activities.
Participiants were asked about cigarette smoking, alcohol, blood pressure, age, sex, periodic health examination, education. Responses were differentiated to create four categories of physical activity status ; inactive, regular active, irregular active.

Results : The final response rate was 136 persons(30.8%), for a total 441 persons. Among them, Man was 51 persons(37.5%) and aged 20 years and older. Proportion of people who reported being inactive, irregular active, regular active are 21, 83 and 32 persons. Women were more likely to report being inactive than men. The proportion of people in Seoul who reported an inactive status increased with increasing age, and shorter, less smoker, less drinker. The three most commonly repor-ted physical activities for both men and women are Calisthenics, Walking with pleasure, Climbing stairs.

Conclusion : We studied people in Seoul, selected by Random Digit sampling. The most commonly reported physical activities for both men and women was Calisthenics. The Proportion of people in Seoul reported an active status increased with decresing age and increasing height.