The heterogeneity in reported effects was reduced in higher quality studies , when physical activity was self-directed with some professional guidance and when there was on-going professional support .
Our review suggests that physical activity interventions have a moderate effect on self reported physical activity and cardio-respiratory fitness , but not on achieving a predetermined level of physical activity .
Due to the clinical and statistical heterogeneity of the studies , only limited conclusions can be drawn about the effectiveness of individual components of the interventions .
BACKGROUND Little is known about the effectiveness of strategies to enable people to achieve an increase in their physical activity .
OBJECTIVES To assess the effects of interventions for promoting physical activity in adults aged 16 years and older , not living in an institution .
Testing the effect of the WALC intervention on exercise adherence in older adults.
The purpose of this study was to test the feasibility of the WALC intervention ( Walk ; Address pain , fear , fatigue during exercise ; Learn about exercise ; Cue by self-modeling ) , and determine its effects on self-efficacy and outcome expectations , exercise activity and free living activity , physical and mental health status , and falls and fall-related injuries . A total of 17 sedentary older women with a mean age of 88 + /- 3.7 years were r and omly assigned to receive either the  WALC intervention or routine care .  Ninety percent of those in the treatment group initiated and engaged in a regular exercise program during the 6 months of the study . There was a statistically significant difference in self-efficacy expectations , exercise behavior , and overall activity between the two groups . Those in the treatment group had stronger self-efficacy expectations related to exercise ; engaged in more exercise and more free living activity ; and although not statistically significant , had stronger outcome expectations following exposure to the WALC intervention when compared with those who received routine care . To help older adults initiate and adhere to an exercise program , nurses can easily implement the WALC intervention in a variety of setting
The heterogeneity in reported effects was reduced in higher quality studies , when physical activity was self-directed with some professional guidance and when there was on-going professional support .
Our review suggests that physical activity interventions have a moderate effect on self reported physical activity and cardio-respiratory fitness , but not on achieving a predetermined level of physical activity .
Due to the clinical and statistical heterogeneity of the studies , only limited conclusions can be drawn about the effectiveness of individual components of the interventions .
BACKGROUND Little is known about the effectiveness of strategies to enable people to achieve an increase in their physical activity .
OBJECTIVES To assess the effects of interventions for promoting physical activity in adults aged 16 years and older , not living in an institution .