Due to lack of high quality studies and often only one manuscript reporting on a particular determinant , we concluded " insufficient evidence " for most associations between determinants and physical activity or exercise .
Background The health benefits of regular physical activity and exercise have been widely acknowledged .
Unfortunately , a decline in physical activity is observed in older adults .
Knowledge of the determinants of physical activity ( unstructured activity incorporated in daily life ) and exercise ( structured , planned and repetitive activities ) is needed to effectively promote an active lifestyle .
Our aim was to systematic ally review determinants of physical activity and exercise participation among healthy older adults , considering the method ological quality of the included studies .
Intervention-related cognitive versus social mediators of exercise adherence in the elderly.
CONTEXT Participation in regular physical activity is recognized as one of the most important health behaviors associated with the prevention of chronic disease and the promotion of health and well-being among the elderly . Although a number of cross-sectional studies have reported predictors of physical activity participation , few studies have assessed changes in intervention-related mediators associated with physical activity adherence in the elderly . OBJECTIVE The purpose of this study was to compare the relative abilities of cognitive mediating variables ( i.e. , self-efficacy beliefs and outcome expectancies/realizations ) versus a social mediating variable ( i.e. , exercise-related social support ) to examine mediators of a telephone-based , exercise-counseling intervention on exercise adherence during months 7 to 12 of an exercise intervention . METHOD Participants were 103 community-dwelling , healthy , sedentary , older adults ( 67 women and 36 men ) .  Self-efficacy for exercise , outcome expectancies/realizations , and social support for exercise were assessed at baseline , 6 months , and 12 months . Participants received telephone-based exercise counseling to promote exercise adherence during the course of two 12-month exercise programs ( i.e. , aerobic/strength or flexibility exercises ) . RESULTS Changes in cognitive mediators ( i.e. , self-efficacy and fitness outcome realizations ) were associated with 7- to 12-month  exercise adherence  while exercise-related social support was not . CONCLUSION Attention should be given to increasing confidence in the elderly to overcome barriers to exercise and achieve relevant fitness outcomes in exercise programs
Due to lack of high quality studies and often only one manuscript reporting on a particular determinant , we concluded " insufficient evidence " for most associations between determinants and physical activity or exercise .
Background The health benefits of regular physical activity and exercise have been widely acknowledged .
Unfortunately , a decline in physical activity is observed in older adults .
Knowledge of the determinants of physical activity ( unstructured activity incorporated in daily life ) and exercise ( structured , planned and repetitive activities ) is needed to effectively promote an active lifestyle .
Our aim was to systematic ally review determinants of physical activity and exercise participation among healthy older adults , considering the method ological quality of the included studies .