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Association of occupation with the daily physical activity and sedentary behaviour of middle-aged workers in Korea: a cross-sectional study based on data from the Korea National Health and Nutrition Examination Survey

Authors
Sung, Joo HyeSon, Se RhimBaek, Seol-HeeKim, Byung-Jo
Issue Date
11월-2021
Publisher
BMJ PUBLISHING GROUP
Keywords
health policy; occupational & industrial medicine; public health
Citation
BMJ OPEN, v.11, no.11
Indexed
SCIE
SCOPUS
Journal Title
BMJ OPEN
Volume
11
Number
11
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/135892
DOI
10.1136/bmjopen-2021-055729
ISSN
2044-6055
Abstract
Objectives The WHO recommends that adults engage in regular moderate-to-vigorous physical activities (MVPAs) and muscle-strengthening activities (MSA), and minimise sedentary behaviour. This study aimed to determine the association of occupation with MVPA, MSA and sedentary behaviour in middle-aged Korean workers. Design and setting A cross-sectional study using data from the seventh Korea National Health and Nutrition Examination Survey (2016-2018). Participants Workers aged between 40 and 69 years in Korea (n=6359). Outcome measures Population-weighted proportions not meeting the MVPA (<150 min/week) and MSA (<2 days/week) guidelines, and with high sedentary behaviour (<7 hours/day) were calculated, and their associations with sociodemographic and work-related variables were assessed using multiple logistic regression analyses. Additionally, the estimated time spent on MVPA, MSA and sedentary behaviour according to the occupation categories (white-collar, pink-collar and blue-collar) was calculated using analysis of covariance (ANCOVA). Results The MVPA level did not show a significant difference across the occupation categories. Blue-collar workers showed significantly lower MSA participation than white-collar and pink-collar workers (male, p=0.006; female, p=0.004; by ANCOVA). High sedentary behaviour was significantly associated with white-collar occupations (p<0.001 by ANCOVA). Longer working hours were negatively associated with MVPA (OR=1.01, 95% CI 1.01 to 1.02) and MSA (OR=1.01, 95% CI 1.00 to 1.02). Workers with higher stress were less likely to participate in MSA (male: OR=1.43, 95% CI 1.10 to 1.86; female: OR=1.39, 95% CI 1.08 to 1.80). Self-employed workers showed lower MVPA levels than employees (male: OR=1.26, 95% CI 1.09 to 1.47; female: OR=1.36, 95% CI 1.13 to 1.64). Daily workers compared with full-time workers (OR=0.38, 95% CI 0.24 to 0.59) and temporary workers compared with regular workers (OR=0.75, 95% CI 0.59 to 0.95) were associated with less sedentary behaviour in men. Conclusion A number of work-related factors were associated with PA levels and sedentary behaviour in middle-aged workers. The workplace is one of the critical elements to intervene in health promotion strategies.
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