Annals of Occupational and Environmental Medicine

  • Volume 34
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  • Pages.15.1-15.9
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  • 2022
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  • 1225-3618(pISSN)
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  • 2052-4374(eISSN)
The Korean Society of Occupational & Environmental Medicine (대한직업환경의학회)
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Association between sitting-time at work and incidence of erosive esophagitis diagnosed by esophagogastroduodenoscopy: a Korean cohort study

  • Daehoon Kim (Department of Occupational and Environ mental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University) ;
  • Yesung Lee (Department of Occupational and Environ mental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University) ;
  • Eunchan Mun (Department of Occupational and Environ mental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University) ;
  • Eunhye Seo (Department of Occupational and Environ mental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University) ;
  • Jaehong Lee (Department of Occupational and Environ mental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University) ;
  • Youshik Jeong (Department of Occupational and Environ mental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University) ;
  • Jinsook Jeong (Department of Occupational and Environ mental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University) ;
  • Woncheol Lee (Department of Occupational and Environ mental Medicine, Kangbuk Samsung Hospital, School of Medicine, Sungkyunkwan University)
  • Received : 2021.11.28
  • Accepted : 2022.06.01
  • Published : 2022.12.31
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Abstract

Background: Most previous longitudinal studies on lifestyle and gastroesophageal reflux disease (GERD) have focused on physical activity rather than sitting time. The main purpose of this study was to investigate the relationship between prolonged sitting time and the development of erosive esophagitis (EE). Methods: A self-report questionnaire was used for measuring sitting time in the Kangbuk Samsung Health Study. Sitting time was categorized into four groups: ≤ 6, 7-8, 9-10, and ≥ 11 hours/day. Esophagogastroduodenoscopy (EGD) was performed by experienced endoscopists who were unawared of the aims of this study. Hazard ratios (HRs) and 95% confidence intervals (CIs) for the development of EE were estimated using Cox proportional hazards analyses with ≤ 6 hours/day sitting time as the reference. Results: There were 6,524 participants included in the study. During a mean follow-up of 3.14 years, 2,048 incident cases developed EE. In age- and sex-adjusted models, the HR in the group sitting ≥ 11 hours per day compared ≤ 6 hours per day was 0.88 (95% CI: 0.76-0.99). After further adjusting for alcohol intake, smoking status, educational level, history of diabetes, and history of dyslipidemia, sitting time was still significantly related to the risk of EE (HR, 0.87; 95% CI: 0.76-0.98). After further adjustment for exercise frequency, this association persisted (HR, 0.86; 95% CI: 0.76-0.98). In subgroup analysis by obesity, the relationship between sitting time and EE was only significant among participants with body mass index < 25 kg/m2 (HR, 0.82; 95% CI: 0.71-0.95). Conclusions: Generally, prolonged sitting time is harmful to health, but with regard to EE, it is difficult to conclude that this is the case.

Keywords

Acknowledgement

This work was supported by the Korean Society of Occupational and Environmental Medicine (KSOEM).

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