No impact of patient and intervention characteristics on the effect estimates were found .
Short conclusion Low quality of evidence was found for a moderate effect of physical activity monitor-based interventions on physical activity compared with control interventions .
Background The body of evidence related to the effect of physical activity monitor-based interventions has grown over the recent years .
However , the effect of physical activity monitor-based interventions in older adults remains unclear and should be systematic ally review ed .
Objective The objective of this systematic review was to estimate the effect of physical activity monitor-based interventions on physical activity behavior  in participants aged 65 and above .
Subsequently we explored the effect on body mass index , physical capacity , and health-related quality of life and finally the impact of patient- and intervention characteristics .
Healthy Steps Trial: Pedometer-Based Advice and Physical Activity for Low-Active Older Adults
PURPOSE We compared the effectiveness of 2 physical activity prescriptions delivered in primary care — the st and ard time-based Green Prescription and a pedometer step-based Green Prescription — on physical activity , body mass index ( BMI ) , blood pressure , and quality of life in low-active older adults . METHODS We undertook a r and omized controlled trial involving 330 low-active older adults ( aged = 65 years ) recruited through their primary care physicians ’ patient data bases . Participants were r and omized to either the pedometer step-based Green Prescription group ( n = 165 ) or the st and ard Green Prescription group ( n = 165 ) . Both groups had a visit with the primary care practitioner and 3 telephone counseling sessions over 12 weeks aim ed at increasing physical activity . Outcomes were the changes in physical activity ( assessed with the Auckl and Heart Study Physical Activity Question naire ) , blood pressure , BMI , quality of life ( assessed with the 36-Item Short Form Health Survey ) , physical function status ( assessed with the Short Physical Performance Battery ) , and falls over a 12-month period . RESULTS Of the patients invited to participate , 57 % responded . At 12 months , leisure walking increased by 49.6 min/wk for the pedometer Green Prescription compared with 28.1 min/wk for the st and ard Green Prescription ( P=.03 ) . For both groups , there were significant increases across all physical activity domains at 3 months ( end of intervention ) that were largely maintained after 12 months of follow-up . BMI did not change in either group . Significant improvements in blood pressure were observed for both groups without any differences between them . CONCLUSIONS Pedometer use result ed in a greater increase in leisure walking without any impact on overall activity level . All participants increased physical activity , and on average , their blood pressure decreased over 12 months , although the clinical relevance is unknown
No impact of patient and intervention characteristics on the effect estimates were found .
Short conclusion Low quality of evidence was found for a moderate effect of physical activity monitor-based interventions on physical activity compared with control interventions .
Background The body of evidence related to the effect of physical activity monitor-based interventions has grown over the recent years .
However , the effect of physical activity monitor-based interventions in older adults remains unclear and should be systematic ally review ed .
Objective The objective of this systematic review was to estimate the effect of physical activity monitor-based interventions on physical activity behavior  in participants aged 65 and above .
Subsequently we explored the effect on body mass index , physical capacity , and health-related quality of life and finally the impact of patient- and intervention characteristics .