Background A behavioral science-based approach is essential for constructing effective intervention programs to promote the shift from a sedentary to active lifestyle. Recently, the influences of social and physical environment on physical activity have been recognized as key factors for promoting physical activity. The present study attempts to identify the social and physical environmental influences associated with physical activity promotion.Methods We recruited volunteers from a 14,000 population of community-dwelling adults. Seventy-two adults (intervention group : n=35, control group : n=37) participated in the present study. The intervention consisted of 8 sessions for 2 months using The Waseda Walking Program. We assessed social support for exercise, perceived neighborhood environment for walking, stages of change in exercise behavior and physical activity outcomes at baseline and 2 months. Ffifty-seven out of 72 subjects (intervention : n=30, control : n=27) completed all of the intervention including the final questionnaire.Results There were significant intervention effects on physical activity outcomes, stages of change and perceived neighborhood environment. However, no significant improvement in social support was found. In addition, improvement of perceived physical environment was related to an increase in physical activity.Conclusion Perceived neighborhood environment for walking would be identified as a key factor to influence an effect of physical activity promotion. On the other hand, social support would be influenced to the earlier stages of change in exercise.

The purpose of this study was to investigate the effect of individual feedback intervention (IFB) or general video intervention (GV) on promoting daily physical activity. One hundred and thirty-six community-dwelling people volunteered as subjects and participated in the 2-month walking program provided as a correspondence course. The subjects were randomly allocated to one of four groups, which consisted of either IFB or GV. Each of the groups was based on behavioral science. The stage of change in exercise, self-efficacy for exercise and daily physical activity were measured before and after intervention 4 months later during the follow-up period. There were statistically significant effects of both ‘time’ (F=3.71, p=0.026) and ‘time’בIFB’ (F=3.76, p=0.025) in self-efficacy for exercise; while there was no significant effect of interaction between ‘time’בGV’. As for daily physical activity, there was no significant effect of the interaction both of ‘time’בIFB’ and ‘time’בGV’. These results suggest the IFB of promoting self-efficacy for exercise.