Walk for well-being: The main effects of walking on approach motivation

The purpose of this study was to investigate the role of exercise in the development of self-efficacy and approach motivation. An 8-week blind experimental design was used (N?=?185), with two control and two treatment groups. Already physically active participants were assigned to one control group, while participants that reported a sedentary lifestyle at pretest were randomly assigned to either a sedentary control group or one of two treatment groups that began a brisk walking intervention. Treatment group participants walked either outdoors or indoors for 30 min per day, 4 days per week, for 8 weeks. The indoor/outdoor treatment group assignment was implemented to determine if exercising outdoors enhanced the outcomes. Significant main effects of walking were found for exercise self-efficacy, general self-efficacy and global approach motivation tendencies. Walking outdoors resulted in the greatest gains in general self-efficacy and global approach motivation. Given the alarmingly sedentary nature of American culture, these findings further evidence how simple changes in physical activity may have profound effects on well-being.