{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,3]],"date-time":"2025-11-03T12:32:20Z","timestamp":1762173140690,"version":"build-2065373602"},"reference-count":25,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2014,7,15]],"date-time":"2014-07-15T00:00:00Z","timestamp":1405382400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"National Institute on Aging, National Institutes of Health","award":["AG10184","T32AG000247"],"award-info":[{"award-number":["AG10184","T32AG000247"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J American Geriatrics Society"],"published-print":{"date-parts":[[2014,8]]},"abstract":"\n Objectives<\/jats:title>\n To determine whether performance speeds mediate the association between visual impairment and self\u2010reported mobility disability over an 8\u2010year period.<\/jats:p>\n <\/jats:sec>\n \n Design<\/jats:title>\n Longitudinal analysis.<\/jats:p>\n <\/jats:sec>\n \n Setting<\/jats:title>\n Salisbury, Maryland.<\/jats:p>\n <\/jats:sec>\n \n Participants<\/jats:title>\n Salisbury Eye Evaluation Study participants aged 65 and older (N\u00a0=\u00a02,520).<\/jats:p>\n <\/jats:sec>\n \n Measurements<\/jats:title>\n Visual impairment was defined as best\u2010corrected visual acuity worse than 20\/40 in the better\u2010seeing eye or visual field less than 20\u00b0. Self\u2010reported mobility disability on three tasks was assessed: walking up stairs, walking down stairs, and walking 150 feet. Performance speed on three similar tasks was measured: walking up steps (steps\/s), walking down steps (steps\/s), and walking 4\u00a0m (m\/s).<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n For each year of observation, the odds of reporting mobility disability was significantly greater for participants who were visually impaired (\n VI<\/jats:styled-content>\n ) than for those who were not (\n NVI<\/jats:styled-content>\n ) (odds ratio (\n OR<\/jats:styled-content>\n )\n difficulty walking up steps<\/jats:sub>\n \u00a0=\u00a01.58, 95% confidence interval (\n CI<\/jats:styled-content>\n )\u00a0=\u00a01.32\u20131.89;\n OR<\/jats:styled-content>\n difficulty walking down steps<\/jats:sub>\n \u00a0=\u00a01.90, 95%\n CI<\/jats:styled-content>\n \u00a0=\u00a01.59\u20132.28;\n OR<\/jats:styled-content>\n difficulty walking 150 feet<\/jats:sub>\n \u00a0=\u00a02.11, 95%\n CI<\/jats:styled-content>\n \u00a0=\u00a01.77\u20132.51). Once performance speed on a similar mobility task was included in the models,\n VI<\/jats:styled-content>\n participants were no longer more likely to report mobility disability than those who were\n NVI<\/jats:styled-content>\n (\n OR<\/jats:styled-content>\n difficulty walking up steps<\/jats:sub>\n \u00a0=\u00a00.84, 95%\n CI<\/jats:styled-content>\n \u00a0=\u00a00.65\u20131.11;\n OR<\/jats:styled-content>\n difficulty walking down steps<\/jats:sub>\n \u00a0=\u00a00.96, 95%\n CI<\/jats:styled-content>\n \u00a0=\u00a00.74\u20131.24;\n OR<\/jats:styled-content>\n difficulty walking 150 feet<\/jats:sub>\n \u00a0=\u00a01.22, 95%\n CI<\/jats:styled-content>\n \u00a0=\u00a00.98\u20131.50).\n <\/jats:p>\n <\/jats:sec>\n \n Conclusion<\/jats:title>\n \n Slower performance speed in\n VI<\/jats:styled-content>\n individuals largely accounted for the difference in the odds of reporting mobility disability, suggesting that\n VI<\/jats:styled-content>\n older adults walk slower and are therefore more likely to report mobility disability than those who are\n NVI<\/jats:styled-content>\n . Improving mobility performance in older adults with visual impairment may minimize the perception of mobility disability.\n <\/jats:p>\n <\/jats:sec>","DOI":"10.1111\/jgs.12937","type":"journal-article","created":{"date-parts":[[2014,7,15]],"date-time":"2014-07-15T15:35:54Z","timestamp":1405438554000},"page":"1540-1545","source":"Crossref","is-referenced-by-count":11,"title":["Does Walking Speed Mediate the Association Between Visual Impairment and Self\u2010Report of Mobility Disability? 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