• Takaaki Ikeda, Upul Cooray, Masayasu Murakami, and Ken Osaka.
• Department of Health Policy Science, Graduate School of Medical Science, Yamagata University, Yamagata, Japan; Department of International and Community Oral Health, Tohoku University Graduate School of Dentistry, Sendai, Japan. Electronic address: t.ikeda0110@gmail.com.
• J Pain. 2022 Mar 1; 23 (3): 390-397.

AbstractFew studies have examined whether maintaining moderate or vigorous physical activity (PA) reduces the risk of low back pain in older people. This study aimed to examine the magnitude of the associations of changes in PA on the risk of low back pain at 4 years of follow-up. We analyzed 4,882 participants in the English Longitudinal Study of Ageing who were initially free from low back pain (mean age, 65.6 ± 8.9 years at baseline). Self-reported PA, which was assessed at wave 6 (2012-2013) and wave 7 (2014-2015), was used as the exposure. The PA of the respondents was categorized into "no PA at all," "up to moderate PA," and "up to vigorous PA" groups. Self-reported moderate/severe low back pain assessed at 4 years of follow-up (2016-2017) was used as the outcome. Maintaining moderate (relative risk [RR], 0.59; 95% confidence interval [CI], 0.36-0.99) or vigorous (RR, 0.46; 95% CI, 0.27-0.77) PA at least 1-3 times a month was negatively associated with prevalence of low back pain compared with no PA at all. Interventions for maintaining either moderate or vigorous PA might be beneficial in preventing the incidence of low back pain in the older population. PERSPECTIVE: This study examined the magnitude of the association between changes in physical activity over time and the risk of low back pain. The findings suggest that encouraging people to maintain at least moderate physical activity over 2 years is useful for reducing the risk of low back pain at 4 years of follow-up.Copyright © 2021 United States Association for the Study of Pain, Inc. Published by Elsevier Inc. All rights reserved.

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