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 .
A 12-Week Physical and Cognitive Exercise Program Can Improve Cognitive Function and Neural Efficiency in Community-Dwelling Older Adults: A Randomized Controlled Trial.
OBJECTIVES To investigate whether a 12-week physical and cognitive exercise program can improve cognitive function and brain activation efficiency in community-dwelling older adults . DESIGN R and omized controlled trial . SETTING Kyoto , Japan . PARTICIPANTS Community-dwelling older adults ( N = 48 ) were r and omized into an exercise group ( n = 24 ) and a  control group ( n = 24 ) . INTERVENTION Exercise group participants received a weekly dual task-based multimodal exercise class in combination with pedometer-based daily walking exercise during the 12-week intervention phase . Control group  participants did not receive any intervention and were instructed to spend their time as usual during the intervention phase . MEASUREMENTS The outcome measures were global cognitive function , memory function , executive function , and brain activation ( measured using functional magnetic resonance imaging ) associated with visual short-term memory . RESULTS Exercise group participants had significantly greater postintervention improvement in memory and executive functions than the control group ( P < .05 ) . In addition , after the intervention , less activation was found in several brain regions associated with visual short-term memory , including the prefrontal cortex , in the exercise group ( P < .001 , uncorrected ) . CONCLUSION A 12-week physical and cognitive exercise program can improve the efficiency of brain activation during cognitive tasks in older adults , which is associated with improvements in memory and executive function
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 .