A systematic review of interventions conducted in clinical or community settings to improve dual-task postural control in older adults
Maayan Agmon,1 Basia Belza,2 Huong Q Nguyen,2,3 Rebecca G Logsdon,2 Valerie E Kelly4
1The Cheryl Spencer Department of Nursing, Faculty of Social Welfare and Health Studies, University of Haifa, Israel; 2School of Nursing, University of Washington, Seattle, WA, USA; 3Department of Research and Evaluation, Kaiser Permanente, CA, USA; 4School of Medicine, University of Washington, Seattle, WA, USA
Background: Injury due to falls is a major problem among older adults. Decrements in dual-task postural control performance (simultaneously performing two tasks, at least one of which requires postural control) have been associated with an increased risk of falling. Evidence-based interventions that can be used in clinical or community settings to improve dual-task postural control may help to reduce this risk.
Purpose: The aims of this systematic review are: 1) to identify clinical or community-based interventions that improved dual-task postural control among older adults; and 2) to identify the key elements of those interventions.
Data sources: Studies were obtained from a search conducted through October 2013 of the following electronic databases: PubMed, CINAHL, PsycINFO, and Web of Science.
Study selection: Randomized and nonrandomized controlled studies examining the effects of interventions aimed at improving dual-task postural control among community-dwelling older adults were selected.
Data extraction: All studies were evaluated based on methodological quality. Intervention characteristics including study purpose, study design, and sample size were identified, and effects of dual-task interventions on various postural control and cognitive outcomes were noted.
Data synthesis: Twenty-two studies fulfilled the selection criteria and were summarized in this review to identify characteristics of successful interventions.
Limitations: The ability to synthesize data was limited by the heterogeneity in participant characteristics, study designs, and outcome measures.
Conclusion: Dual-task postural control can be modified by specific training. There was little evidence that single-task training transferred to dual-task postural control performance. Further investigation of dual-task training using standardized outcome measurements is needed.
Keywords: physical therapy, balance, walking, motor learning, fall prevention
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