Anne Shumway-Cook1, Patricia Noritake Matsuda2, Catherine Taylor3. 1. A. Shumway-Cook, PT, PhD, FAPTA, Department of Rehabilitation Medicine, Division of Physical Therapy, University of Washington, 1959 NE Pacific St, Box 356490, Seattle, WA 98195 (USA). ashumway@uw.edu. 2. P.N. Matsuda, PT, PhD, DPT, Department of Rehabilitation Medicine, Division of Physical Therapy, University of Washington. 3. C. Taylor, PhD, College of Education, University of Washington.
Abstract
BACKGROUND: The modified Dynamic Gait Index (mDGI), developed from a person-environment model of mobility disability, measures mobility function relative to specific environmental demands. The framework for interpreting mDGI scores relative to specific environmental dimensions has not been investigated. OBJECTIVE: The aim of this study was to examine the person-environmental model underlying the development and interpretation of mDGI scores. DESIGN: This was a cross-sectional, descriptive study. METHODS: There were 794 participants in the study, including 140 controls. Out of the total study population, 239 had sustained a stroke, 140 had vestibular dysfunction, 100 had sustained a traumatic brain injury, 91 had gait abnormality, and 84 had Parkinson disease. Exploratory factor analysis was used to investigate whether mDGI scores supported the 4 environmental dimensions. RESULTS: Factor analysis showed that, with some exceptions, tasks loaded on 4 underlying factors, partially supporting the underlying environmental model. LIMITATIONS: Limitations of this study included the uneven sample sizes in the 6 groups. CONCLUSIONS: Support for the environmental framework underlying the mDGI extends its usefulness as a clinical measure of functional mobility by providing a rationale for interpretation of scores that can be used to direct treatment and infer change in mobility function.
BACKGROUND: The modified Dynamic Gait Index (mDGI), developed from a person-environment model of mobility disability, measures mobility function relative to specific environmental demands. The framework for interpreting mDGI scores relative to specific environmental dimensions has not been investigated. OBJECTIVE: The aim of this study was to examine the person-environmental model underlying the development and interpretation of mDGI scores. DESIGN: This was a cross-sectional, descriptive study. METHODS: There were 794 participants in the study, including 140 controls. Out of the total study population, 239 had sustained a stroke, 140 had vestibular dysfunction, 100 had sustained a traumatic brain injury, 91 had gait abnormality, and 84 had Parkinson disease. Exploratory factor analysis was used to investigate whether mDGI scores supported the 4 environmental dimensions. RESULTS: Factor analysis showed that, with some exceptions, tasks loaded on 4 underlying factors, partially supporting the underlying environmental model. LIMITATIONS: Limitations of this study included the uneven sample sizes in the 6 groups. CONCLUSIONS: Support for the environmental framework underlying the mDGI extends its usefulness as a clinical measure of functional mobility by providing a rationale for interpretation of scores that can be used to direct treatment and infer change in mobility function.
Authors: Zacarías Sánchez Milá; Jorge Velázquez Saornil; Angélica Campón Chekroun; José Manuel Barragán Casas; Raúl Frutos Llanes; Arantxa Castrillo Calvillo; Cristina López Pascua; David Rodríguez Sanz Journal: Int J Environ Res Public Health Date: 2022-09-28 Impact factor: 4.614
Authors: Rafael B Stern; Matheus Silva d'Alencar; Yanina L Uscapi; Marco D Gubitoso; Antonio C Roque; André F Helene; Maria Elisa Pimentel Piemonte Journal: Front Aging Neurosci Date: 2020-03-04 Impact factor: 5.750