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 .
Efficacy of an accelerometer-guided physical activity intervention in community-dwelling older women.
BACKGROUND Although many Japanese older adults spend more than an hour each day walking for exercise , the intensity is often lower than the minimum level associated with various health benefits . The purpose of this study was to evaluate the efficacy of a lifestyle physical activity intervention on improving quantity and quality of daily physical activity ( DPA ) as well as cardiorespiratory endurance in community-dwelling older women . METHODS 68 women ( 60 - 78 yr of age ) were r and omly assigned to either a lifestyle physical activity intervention group ( LIFE ) or control group . During the 12-wk intervention , feedback based on accelerometer DPA data ( number of daily steps ( STEPS ) and time spent performing daily moderate intensity physical activity ( MPA ) was provided to each participant in LIFE every two weeks . Cardiorespiratory endurance was evaluated using the 12-Minute Walk Test ( 12-MW ) . RESULTS Following the 12-wk intervention , significant group interactions were observed for STEPS , MPA , and cardiorespiratory endurance . LIFE increased STEPS by 16 % , MPA by 53 % , and the distance walked during the 12-MW by 10 % . CONCLUSIONS Promotion of DPA using accelerometers can significantly improve quantity and quality of daily physical activity as well as cardiorespiratory endurance in older women
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 .