Living with severe obesity: adults' physical activity preferences, self-efficacy to overcome barriers and motives.

A preference-based program focusing on health motives and addressing health and pain issues may help to promote physical activity behaviour among adults with severe obesity. Nevertheless, experimental studies are needed to determine if such strategies effectively increase physical activity behaviour in this population.Implications for rehabilitationPhysical activity preferences (i.e., walking, biking and swimming performed at a moderate intensity and outdoors for a duration of 30 minutes to 1 hour with supervision) can be used to enhance motivation in people with severe obesity.Addressing the main barriers of regular physical activity (e.g., poor health, pain, depression) could ensure better adherence to physical activity in people with severe obesity.Using motives of health improvement and health problems prevention could lead to increased physical activity in people with severe obesity.