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Geriatr Gerontol Int 2015
ORIGINAL ARTICLE: EPIDEMIOLOGY, CLINICAL PRACTICE AND HEALTH
Association between knee pain and gait speed decline in rural Japanese community-dwelling older adults: 1-year prospective cohort study Jun Kitayuguchi,1,2 Masamitsu Kamada,3,4,5 Tsuyoshi Hamano,6 Toru Nabika,7 Kuninori Shiwaku,8 Hiroharu Kamioka,9 Shimpei Okada10 and Yoshiteru Mutoh11 1
Physical Education and Medicine Research Center UNNAN, Unnan City, 6Center for Community-based Health Research and Education (COHRE), Organization for the Promotion of Project Research, Shimane University, 7Department of Functional Pathology, 8Department of Environmental and Preventive Medicine, Shimane University School of Medicine, Izumo, Shimane, 2Department of Environmental Symbiotic Studies, 9Faculty of Regional Environment Science, Tokyo University of Agriculture, 4Department of Health Promotion and Exercise, National Institute of Health and Nutrition, 5Japan Society for the Promotion of Science, 11The Research Institute of Nippon Sport Science University, Tokyo, 10Physical Education and Medicine Research Foundation, Tomi City, Nagano, Japan; and 3Division of Preventive Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Aim: The present study examined whether knee pain was associated with decline in maximum gait speed (MGS) in a rural mountainous region. Methods: This was a population-based 1-year prospective cohort study. A total of 658 men and women aged 60 years and older participated in the baseline survey in 2006, and 400 individuals participated in the follow-up survey in 2007. We compared the incidence of meaningful decline in gait speed (≥0.1 m/s) in older adults with different knee pain levels (none, mild, severe), estimating incidence rate ratio (IRR) by multivariable-adjusted Poisson regression model. Results: Meaningful decline in MGS presented in 24.3% of participants, especially in men (30.3%). Baseline knee pain level was significantly related to meaningful decline in MGS after adjustment of potential confounders (IRR 1.79 for mild pain, 1.84 for severe pain; P for trend 10%). We adjusted the following potential confounders: sex, age (60–69, 70–79, ≥80 years), BMI (
Geriatr Gerontol Int 2015
ORIGINAL ARTICLE: EPIDEMIOLOGY, CLINICAL PRACTICE AND HEALTH
Association between knee pain and gait speed decline in rural Japanese community-dwelling older adults: 1-year prospective cohort study Jun Kitayuguchi,1,2 Masamitsu Kamada,3,4,5 Tsuyoshi Hamano,6 Toru Nabika,7 Kuninori Shiwaku,8 Hiroharu Kamioka,9 Shimpei Okada10 and Yoshiteru Mutoh11 1
Physical Education and Medicine Research Center UNNAN, Unnan City, 6Center for Community-based Health Research and Education (COHRE), Organization for the Promotion of Project Research, Shimane University, 7Department of Functional Pathology, 8Department of Environmental and Preventive Medicine, Shimane University School of Medicine, Izumo, Shimane, 2Department of Environmental Symbiotic Studies, 9Faculty of Regional Environment Science, Tokyo University of Agriculture, 4Department of Health Promotion and Exercise, National Institute of Health and Nutrition, 5Japan Society for the Promotion of Science, 11The Research Institute of Nippon Sport Science University, Tokyo, 10Physical Education and Medicine Research Foundation, Tomi City, Nagano, Japan; and 3Division of Preventive Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts, USA
Aim: The present study examined whether knee pain was associated with decline in maximum gait speed (MGS) in a rural mountainous region. Methods: This was a population-based 1-year prospective cohort study. A total of 658 men and women aged 60 years and older participated in the baseline survey in 2006, and 400 individuals participated in the follow-up survey in 2007. We compared the incidence of meaningful decline in gait speed (≥0.1 m/s) in older adults with different knee pain levels (none, mild, severe), estimating incidence rate ratio (IRR) by multivariable-adjusted Poisson regression model. Results: Meaningful decline in MGS presented in 24.3% of participants, especially in men (30.3%). Baseline knee pain level was significantly related to meaningful decline in MGS after adjustment of potential confounders (IRR 1.79 for mild pain, 1.84 for severe pain; P for trend 10%). We adjusted the following potential confounders: sex, age (60–69, 70–79, ≥80 years), BMI (
