• Yamato Tsuboi, Yuya Ueda, Taiki Sugimoto, Fumihiro Naruse, and Rei Ono.
• Kobe University Graduate School of Health Sciences, Kobe, Japan (Department of Community Health Sciences). yt.green1@gmail.com.
• Int J Occup Med Environ Health. 2018 Jan 7; 31 (2): 165-172.

ObjectivesTo elucidate the association between metabolic syndrome (MetS) and disability due to low back pain (LBP) among care workers.Material And MethodsThis cross-sectional study enrolled 656 care workers having experienced LBP in the year prior to the year of this study. The Roland-Morris Disability questionnaire (RDQ) and self-reported questionnaires regarding LBP, fear of movement, depressive symptom, psychosocial factors, intensity of pain, and duration of pain were administered, and a medical examination was performed. Metabolic syndrome was defined according to the international definition agreed in 2009. Out of the 656 care workers, we included 316 care workers (response rate: 48.2%) who had fully completed the questionnaires as the study sample (males: 13.6%, median age = 51 years old, range: 35-74 years old). To examine the association between MetS and the level of disability due to LBP, we used the Poisson regression analysis and estimated crude and adjusted prevalence ratios (PR).ResultsOut of the 316 care workers, 52 (16.5%) were diagnosed as having MetS. Metabolic syndrome was significantly associated with the RDQ score (adjusted PR: 1.57, 95% confidence interval (CI): 1.17-2.11) after adjusting for covariates, such as age, sex, fear of movement, job demands, social support, intensity of pain, and duration of pain.ConclusionsThis study showed that MetS was independently associated with disability due to LBP among care workers. A multidisciplinary intervention taking MetS into consideration may be an effective way to reduce disability due to LBP in people with both LBP and MetS. Int J Occup Med Environ Health 2018;31(2):165-172.This work is available in Open Access model and licensed under a CC BY-NC 3.0 PL license.

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