Changes in executive functions and self-efficacy are independently associated with improved usual gait speed in older women

BMC Geriatrics

Research Article

Chun Liang Hsu¹  Jennifer C Davis¹  Lindsay A Katarynych¹  Karim M Khan²  Teresa Liu-Ambrose³  Lindsay S Nagamatsu⁴ 

[1] Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada;Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada;Department of Family Practice, University of British Columbia, Vancouver, BC, Canada;Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada;Department of Physical Therapy, University of British Columbia, Vancouver, BC, Canada;Centre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, University of British Columbia, Vancouver, BC, Canada;Department of Psychology, University of British Columbia, Vancouver, BC, Canada;

关键词: Executive Function;    Selective Attention;    Conflict Resolution;    Gait Speed;    Executive Process;   

DOI  :  10.1186/1471-2318-10-25

 received in 2009-11-30, accepted in 2010-05-19,  发布年份 2010

来源: Springer

【 摘 要 】

BackgroundImproved usual gait speed predicts substantial reduction in mortality. A better understanding of the modifiable factors that are independently associated with improved gait speed would ensure that intervention strategies are developed based on a valid theoretical framework. Thus, we examined the independent association of change in executive functions and change in falls-related self-efficacy with improved gait speed among community-dwelling senior women.MethodsA secondary analysis of the 135 senior women aged 65 to 75 years old who completed a 12-month randomized controlled trial of resistance training. Usual gait speed was assessed using a 4-meter walk. Three executive processes were assessed by standard neuropsychological tests: 1) set shifting; 2) working memory; and 3) selective attention and response inhibition. A linear regression model was constructed to determine the independent association of change in executive functions and falls-related self-efficacy with change in gait speed.ResultsImproved selective attention and conflict resolution, and falls-related self-efficacy, were independently associated with improved gait speed after accounting for age, global cognition, baseline gait speed, and change in quadriceps strength. The total variance explained was 24%.ConclusionsInterventions that target executive functions and falls-related self-efficacy, in addition to physical functions, to improve gait speed may be more efficacious than those that do not.Trial RegistrationClinicalTrials.gov Identifier: NCT00426881

【 授权许可】

CC BY   
© Liu-Ambrose et al; licensee BioMed Central Ltd. 2010