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 .
Do pedometers increase physical activity in sedentary older women? A randomized controlled trial.
OBJECTIVES To determine the effectiveness of a behavior change intervention ( BCI ) with or without a pedometer in increasing physical activity in sedentary older women . DESIGN Prospect i ve r and omized controlled trial . SETTING Primary care , City of Dundee , Scotl and . PARTICIPANTS Two hundred four sedentary women aged 70 and older . INTERVENTIONS Six months of BCI , BCI plus pedometer ( pedometer plus ) , or usual care . MEASUREMENTS PRIMARY OUTCOME change in daily activity counts measured by accelerometry . SECONDARY OUTCOMES Short Physical Performance Battery , health-related quality of life , depression and anxiety , falls , and National Health Service re source use . RESULTS One hundred seventy-nine of 204 ( 88 % ) women completed the 6-month trial .  Withdrawals were highest from the BCI group ( 15/68 ) followed by the pedometer plus group ( 8/68 ) and then the control group ( 2/64 ) . After adjustment for baseline differences , accelerometry counts increased significantly more in the BCI group at 3 months than in the control group ( P = .002 ) and the pedometer plus group ( P = .04 ) . By 6 months , accelerometry counts in both intervention groups had fallen to levels that were no longer statistically significantly different from baseline . There were no significant changes in the secondary outcomes . CONCLUSION The BCI was effective in objective ly increasing physical activity in sedentary older women . Provision of a pedometer yielded no additional benefit in physical activity , but may have motivated participants to remain in the trial
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 .