title: Construct validity of the Modified Gait Efficacy Scale in older females.
abstract: There are few well-validated tools that focus on the assessment of walking confidence in older adults. The main objective of this study was to assess construct validity of the 10-item Modified Gait Efficacy Scale (mGES) as a measure of walking confidence in older adults. Twenty-four older females completed the mGES, the 16-item Activities-specific Balance Confidence (ABC-16) scale, and the Senior Fitness Test (SFT). Construct validity of the mGES was evaluated by quantifying relationships between the mGES and the ABC-16 and the SFT, and by examining the ability of the mGES to discriminate between known groups (no/lower fear of falling versus higher fear of falling). There was a strong correlation between mGES and the ABC-16 scale (rs = 0.85; p < 0.001). The mGES was significantly associated with SFT components that required lower extremity strength, stepping aerobic endurance, and walking agility and dynamic balance (rs = 0.45 to 0.61; p < 0.05). Relationships between the mGES and number of arm curls in 30 s, chair sit and reach test, and back scratch test were weak (rs = 0.13-0.25; p > 0.05). Mean mGES score was 91.5% in a no/lower fear of falling group, while it was 81.4% in a higher fear group (p = 0.22). There was a trend toward a significant difference in the unstandardized residuals derived from regression of ranked mGES scores on ranked covariate (age and 8 foot up and go) scores, between the no/lower versus higher fear of falling group (p = 0.095). These results support construct validity of the mGES as a measure of gait self-efficacy in community-dwelling older females.
authors.affiliation: a School of Health Professions and Studies, Physical Therapy Department , University of Michigan-Flint , Flint , MI , USA.
authors.forename: Allon
authors.initials: A
authors.lastname: Goldberg
authors.affiliation: a School of Health Professions and Studies, Physical Therapy Department , University of Michigan-Flint , Flint , MI , USA.
authors.forename: Susan Ann
authors.initials: SA
authors.lastname: Talley
authors.affiliation: b Department of Health Care Sciences , Physical Therapy Program, Wayne State University , Detroit , MI , USA.|c Institute of Gerontology , Wayne State University , Detroit , MI , USA.
authors.forename: Diane E
authors.initials: DE
authors.lastname: Adamo
mesh_terms: D000058:Accidental Falls / Q000517:prevention & control; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D003430:Cross-Sectional Studies; D005080:Exercise Test; D005239:Fear; D005260:Female; D005684:Gait; D015577:Geriatric Assessment; D006801:Humans; D008875:Middle Aged; D010809:Physical Fitness; D004856:Postural Balance; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D020377:Self Efficacy; D012737:Sex Factors; D011795:Surveys and Questionnaires; D016138:Walking
keywords: Gait self-efficacy; older adult; walking confidence