Document Detail

Validation of a talking pedometer for adults with visual impairment.
MedLine Citation:
PMID:  21085034     Owner:  NLM     Status:  In-Data-Review    
PURPOSE: : The purpose of this study was to establish validity evidence for the Centrios talking pedometer relative to environmental familiarity and MA use in adults with VI.
METHODS: : Thirteen adults with VI (age = 38 ± 14 yr) completed two walking trials over an unfamiliar, quarter-mile course while wearing a Centrios talking pedometer at the right and left sides of the hip. Walking speed, pedometer-determined steps, and actual steps were recorded during the first session, reflecting walking in an "unfamiliar environment." After a series of additional walks over the same course, outcome measures were reassessed during a second trial, reflecting walking in a "familiar environment." Absolute percent error (APE) scores were calculated between actual and pedometer-determined steps. Paired t-tests were used to assess differences in APE relative to mounting position across environmental settings.
RESULTS: : During unfamiliar trials, the pedometer accurately reported steps when mounted at the hip opposite the user's MA (APE = 2.1%) but was significantly less accurate when mounted at the hip on the user's MA side (APE = 11.1%). In the familiar setting, the pedometer accurately reported steps when mounted at the left hip and the hip opposite the user's MA (APE <3%). APE values did not differ across environmental conditions (P > 0.05).
CONCLUSIONS: : In unfamiliar and familiar walking conditions, the Centrios pedometer accurately monitors step-based activity in adults with VI when mounted at the hip opposite the user's MA.
Elizabeth Ackley Holbrook; Sandy L Stevens; Minsoo Kang; Don W Morgan
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  43     ISSN:  1530-0315     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-05-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1094-9     Citation Subset:  IM; S    
1Department of Health and Human Performance, Roanoke College, Salem, VA; and 2Department of Health and Human Performance, Middle Tennessee State University, Murfreesboro, TN.
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