Physical activity restriction in age-related eye disease: a cross-sectional study exploring fear of falling as a potential mediator

BMC Geriatrics

Research Article

Angeline M. Nguyen¹  Karun S. Arora¹  Bonnielin K. Swenor²  David S. Friedman²  Pradeep Y. Ramulu³ 

[1] Wilmer Eye Institute, Johns Hopkins University, 600 North Wolfe Street, Maumenee B-110, 21287, Baltimore, MD, USA;Wilmer Eye Institute, Johns Hopkins University, 600 North Wolfe Street, Maumenee B-110, 21287, Baltimore, MD, USA;Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA;The Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, 600 North Wolfe Street, Maumenee B-110, 21287, Baltimore, MD, USA;Wilmer Eye Institute, Johns Hopkins University, 600 North Wolfe Street, Maumenee B-110, 21287, Baltimore, MD, USA;The Dana Center for Preventive Ophthalmology, Wilmer Eye Institute, 600 North Wolfe Street, Maumenee B-110, 21287, Baltimore, MD, USA;

关键词: Glaucoma;    Age-related macular degeneration;    Fear of falling;    Physical activity;   

DOI  :  10.1186/s12877-015-0062-8

 received in 2014-10-22, accepted in 2015-05-26,  发布年份 2015

来源: Springer

【 摘 要 】

BackgroundFear of falling (FoF) is predictive of decreased physical activity. This study sought to determine if FoF mediates the relationship between decreased vision and physical activity restriction in individuals with glaucoma and age-related macular degeneration (AMD).MethodsAccelerometers were used to measure physical activity over 1 week in 59 control, 83 glaucoma, and 58 AMD subjects. Subjects completed the University of Illinois at Chicago Fear of Falling Questionnaire, and the extent of FoF was estimated using Rasch analysis. In negative binomial models adjusting for demographic, health, and social factors, FoF was investigated as a potential mediator between the severity of visual field (VF) loss (in glaucoma patients) or the severity of contrast sensitivity (CS) loss (in AMD patients) and decreased engagement in physical activity, defined as minutes spent in moderate-to-vigorous physical activity (MVPA) per day.ResultsIn multivariate negative binomial regression models, 5-decibels worse VF mean deviation was associated with 26 % less engagement in MVPA [rate ratio (RR) = 0.74, p < 0.01] amongst glaucoma subjects. When FoF was added to the model, the RR increased from 0.74 to 0.78, and VF loss severity remained associated with less MVPA at a statistically significant level (p < 0.01). Likewise, 0.1 log units worse CS was associated with 11 % less daily MVPA (RR = 0.89, p < 0.01) amongst AMD subjects. When FoF was added to the model, the RR increased from 0.89 to 1.02, and CS loss was no longer associated with MVPA at a statistically significant level (p = 0.53).ConclusionsFoF may mediate the relationship between vision loss and physical activity restriction amongst patients with AMD. Future work should determine optimal strategies for reducing FoF in individuals with vision loss in order to prevent the deleterious effects of physical activity restriction.

【 授权许可】

Unknown   
© Nguyen et al. 2015. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.