Uros Marusic1, Joe Verghese2, Jeannette R Mahoney3. 1. Institute for Kinesiology Research, Science and Research Centre Koper, Koper, Slovenia; Department of Health Sciences, Alma Mater Europaea-ECM, Maribor, Slovenia. Electronic address: umarusic@outlook.com. 2. Department of Neurology, Albert Einstein College of Medicine, Bronx, NY; Department of Medicine, Albert Einstein College of Medicine, Bronx, NY. 3. Department of Neurology, Albert Einstein College of Medicine, Bronx, NY.
Abstract
OBJECTIVE: A strong relation between cognition and mobility has been identified in aging, supporting a role for enhancement mobility through cognitive-based interventions. However, a critical evaluation of the consistency of treatment effects of cognitive-based interventions is currently lacking. The objective of this study was 2-fold: (1) to review the existing literature on cognitive-based interventions aimed at improving mobility in older adults and (2) to assess the clinical effectiveness of cognitive interventions on gait performance. DESIGN: A systematic review of randomized controlled trials (RCT) of cognitive training interventions for improving simple (normal walking) and complex (dual task walking) gait was conducted in February 2018. SETTING AND PARTICIPANTS: Older adults without major cognitive, psychiatric, neurologic, and/or sensory impairments were included. MEASURES: Random effect meta-analyses and a subsequent meta-regression were performed to generate overall cognitive intervention effects on single- and dual-task walking conditions. RESULTS: Ten RCTs met inclusion criteria, with a total of 351 participants included in this meta-analysis. Cognitive training interventions revealed a small effect of intervention on complex gait [effect size (ES) = 0.47, 95% confidence interval (CI) 0.13 to 0.81, P = .007, I2 = 15.85%], but not simple gait (ES = 0.35, 95% CI -0.01 to 0.71, P = .057, I2 = 57.32%). Moreover, a meta-regression analysis revealed that intervention duration, training frequency, total number of sessions, and total minutes spent in intervention were not significant predictors of improvement in dual-task walking speed, though there was a suggestive trend toward a negative association between dual-task walking speed improvements and individual training session duration (P = .067). CONCLUSIONS/IMPLICATIONS: This meta-analysis provides support for the fact that cognitive training interventions can improve mobility-related outcomes, especially during challenging walking conditions requiring higher-order executive functions. Additional evidence from well-designed large-scale randomized clinical trials is warranted to confirm the observed effects.
OBJECTIVE: A strong relation between cognition and mobility has been identified in aging, supporting a role for enhancement mobility through cognitive-based interventions. However, a critical evaluation of the consistency of treatment effects of cognitive-based interventions is currently lacking. The objective of this study was 2-fold: (1) to review the existing literature on cognitive-based interventions aimed at improving mobility in older adults and (2) to assess the clinical effectiveness of cognitive interventions on gait performance. DESIGN: A systematic review of randomized controlled trials (RCT) of cognitive training interventions for improving simple (normal walking) and complex (dual task walking) gait was conducted in February 2018. SETTING AND PARTICIPANTS: Older adults without major cognitive, psychiatric, neurologic, and/or sensory impairments were included. MEASURES: Random effect meta-analyses and a subsequent meta-regression were performed to generate overall cognitive intervention effects on single- and dual-task walking conditions. RESULTS: Ten RCTs met inclusion criteria, with a total of 351 participants included in this meta-analysis. Cognitive training interventions revealed a small effect of intervention on complex gait [effect size (ES) = 0.47, 95% confidence interval (CI) 0.13 to 0.81, P = .007, I2 = 15.85%], but not simple gait (ES = 0.35, 95% CI -0.01 to 0.71, P = .057, I2 = 57.32%). Moreover, a meta-regression analysis revealed that intervention duration, training frequency, total number of sessions, and total minutes spent in intervention were not significant predictors of improvement in dual-task walking speed, though there was a suggestive trend toward a negative association between dual-task walking speed improvements and individual training session duration (P = .067). CONCLUSIONS/IMPLICATIONS: This meta-analysis provides support for the fact that cognitive training interventions can improve mobility-related outcomes, especially during challenging walking conditions requiring higher-order executive functions. Additional evidence from well-designed large-scale randomized clinical trials is warranted to confirm the observed effects.
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