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Jongho Kwon 3 Articles
The relationship between night work and involuntary weight change: data from the fifth Korea National Health and Nutrition Examination Survey (KNHANES 2010–2012)
Jongho Kwon, Jung-Woo Park, Jin-Soo Park, Seyoung Kim, Hyunrim Choi, Sinye Lim
Ann Occup Environ Med 2016;28:4.   Published online January 29, 2016
DOI: https://doi.org/10.1186/s40557-016-0088-1
AbstractAbstract PDFPubReaderePub
Background

Previous studies on the association between shift or night work and weight change have been focused on finding the risk of weight gain caused by shift or night work. In this study, we aimed to reveal the risk of weight gain and weight loss associated with night work by using a nationwide representative data.

Methods

This study was performed on 1605 full-time wage workers between the age of 20 and 69 based on the fifth Korea National Health and Nutrition Examination Survey (KNHANES 2010–2012). The association between night work and involuntary weight change in the previous year was divided into the categories of weight gain and weight loss and studied with modifications in socio-demographic variables, health behavior-related variables, and occupational characteristic variables.

Results

The participants working in night work accounted for 10.6 % of total study participants (male; 11.9 %, female 7.4 %). Workers who worked more than 48 hours per week on average accounted for 41.6 % of the total study participants (male; 46.3 %, female 29.1 %).

Odds ratio (OR) of weight loss associated with night work in male workers was 0.34 (95 % confidence interval (CI) 0.16–0.76) after controlling for several related factors. OR of weight loss associated with night work in female workers with long working hours was 1.95 (95 % CI 0.47–80.86) and that of weight gain was 2.83 (95 % CI 0.12–69.83) after adjusting associated factors.

Conclusions

In this cross-sectional study with national representative sample, night work may lower the risk of weight loss in male workers and induce weight change (weight loss or weight gain) in female workers with long working hours. Therefore, future studies with cohort study design for night workers are needed to reveal the mechanisms and health effects of weight change associated with night work and establish proper management solutions with health and labor policies for Korean night workers.


Citations

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  • Masa Başı Çalışanlarında Emosyonel Durum ve Yeme Tutumunun Değerlendirilmesi
    Saliha YURTÇİÇEK EREN, Gözde ÇALIŞKAN AKIMAL, Neşe ÖZDEMİR
    Turkish Journal of Family Medicine and Primary Care.2023; 17(4): 497.     CrossRef
  • Assessment of the Impact of COVID-19 Lockdown on the Nutritional Status and Lipid Profile of Employees in a Teaching Hospital in Rome: A Retrospective Cohort Study
    Lorenza Lia, Eleonora Ricci, Corrado Colaprico, Eleonora Di Legge, Augusto Faticoni, Lorenzo Maria Donini, Giuseppe La Torre
    International Journal of Environmental Research and Public Health.2022; 19(8): 4549.     CrossRef
  • Effect of work-related factors on the prevalence of peptic ulcer disease among Korean workers: a nationwide population-based study
    Youn I Choi, Jun-Won Chung, Kyoung Oh Kim, Kwang An Kwon, Yoon Jae Kim, Dong Kyun Park
    International Archives of Occupational and Environmental Health.2020; 93(8): 965.     CrossRef
  • Changing patterns of multiple sclerosis in Korea: Toward a more baseline MRI lesions and intrathecal humoral immune responses
    Hyun-June Shin, Jae-Won Hyun, Su-Hyun Kim, Min Su Park, Eun Hee Sohn, Seol-Hee Baek, Byung-Jo Kim, Kyomin Choi, Jeeyoung Oh, Joong-Yang Cho, Ohyun Kwon, Woojun Kim, Jee-Eun Kim, Ju-Hong Min, Byoung Joon Kim, Sun-Young Oh, Jong Seok Bae, Kee Hong Park, Jun
    Multiple Sclerosis and Related Disorders.2019; 35: 209.     CrossRef
  • Exposure effect to cement dust pollution: a mini review
    Emmanuel Adeyanju, Chukwueloka Austin Okeke
    SN Applied Sciences.2019;[Epub]     CrossRef
  • Spontaneous and repeat spontaneous abortion risk in relation to occupational characteristics among working Korean women: a cross-sectional analysis of nationally representative data from Korea
    Wanhyung Lee, Sung Won Jung, Young-Mee Lim, Kyung-Jae Lee, June-Hee Lee
    BMC Public Health.2019;[Epub]     CrossRef
  • Weight gain and body mass index following change from daytime to night shift – a panel study with nursing professionals
    Kali Siqueria, Rosane Griep, Lúcia Rotenberg, Aline Silva-Costa, Maria de Jesus Mendes da Fonseca
    Chronobiology International.2016; 33(6): 776.     CrossRef
  • Effects of shift work on abdominal obesity among 20–39-year-old female nurses: a 5-year retrospective longitudinal study
    Gyeong-Jin Lee, Kunhyung Kim, Se-yeong Kim, Jeong-Ho Kim, Chunhui Suh, Byung-Chul Son, Chae-Kwan Lee, Junghye Choi
    Annals of Occupational and Environmental Medicine.2016;[Epub]     CrossRef
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The Association between Long Working Hours and Self-Rated Health
Jun-Taek Song, Goeun Lee, Jongho Kwon, Jung-Woo Park, Hyunrim Choi, Sinye Lim
Ann Occup Environ Med 2014;26:2-2.   Published online January 20, 2014
DOI: https://doi.org/10.1186/2052-4374-26-2
AbstractAbstract PDFPubReaderePub
Objectives

This study was conducted to determine the number of hours worked per week by full-time wage workers by using the data of the Korean Labor and Income Panel Study (KLIPS), which represents the domestic urban area household, and to determine the association between weekly working hours and the level of self-rated health.

Methods

We used data from the 11th KLIPS conducted in 2008. The subjects of this study were 3,699 full-time wage workers between the ages of 25 and 64 years. The association between weekly working hours and self-rated health was analyzed considering socio-demographic characteristics, work environment, and health-related behaviors.

Results

Among the workers, 29.7% worked less than 40 hours per week; 39.7%, more than 40 to 52 hours; 19.7%, more than 52 to 60 hours; and 10.9%, more than 60 hours per week. After controlling for socio-demographic variables, work environment-related variables, and health-related behavior variables, the odds ratio (OR) for poor self-rated health for the group working more than 40 hours and up to 52 hours was calculated to be 1.06 (95% confidence interval (CI), 0.89-1.27) when the group working less than 40 hours per week was considered the reference. The OR for the group working more than 60 hours was 1.42 (95% CI, 1.10-1.83) and that for the group working more than 52 hours and up to 60 hours was 1.07 (95% CI, 0.86-1.33). After stratification by gender and tenure, the OR of the female workers group and that of the group with a tenure of more than 1 year were found to be significantly higher than those of the other groups.

Conclusions

This study showed that workers working more than 60 hours per week have a significantly higher risk of poor self-rated health than workers working less than 40 hours per week. This effect was more obvious for the female workers group and the group with a tenure of more than 1 year. In the future, longitudinal studies may be needed to determine the association between long working hours and various health effects in Korean workers.


Citations

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  • Association between lone work and self-rated health status: using the 5th Korean Working Conditions Survey
    Eunseun Han, Ui-Jin Kim, Yongho Lee, Sanghyuk Lee, Seunghon Ham, Wanhyung Lee, Won-Jun Choi, Seong-Kyu Kang
    Annals of Occupational and Environmental Medicine.2023;[Epub]     CrossRef
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    Lu Yang, Li Yan, Xiaogang Zhong, Huiqing Long, Fangchun Chen, Xin Jin
    International Journal of Environmental Research and Public Health.2022; 19(23): 16042.     CrossRef
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    Psychology & Health.2022; 37(3): 375.     CrossRef
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    Min Young Park, Jaeyoung Park, Jun-Pyo Myong, Hyoung-Ryoul Kim, Dong-Wook Lee, Mo-Yeol Kang
    Annals of Occupational and Environmental Medicine.2022;[Epub]     CrossRef
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    Phoenix K. H. Mo, Yu Cheng, Joseph T. F. Lau
    Health & Social Care in the Community.2022; 30(2): 656.     CrossRef
  • The negative impact of long working hours on mental health in young Korean workers
    Sungjin Park, Hyungdon Kook, Hongdeok Seok, Jae Hyoung Lee, Daeun Lim, Dong-Hyuk Cho, Suk-Kyu Oh, Sergio A. Useche
    PLOS ONE.2020; 15(8): e0236931.     CrossRef
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    Jongha Jeon, Wanhyung Lee, Won-Jun Choi, Seunghon Ham, Seong-Kyu Kang
    International Journal of Environmental Research and Public Health.2020; 17(8): 2736.     CrossRef
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    Annual Review of Public Health.2020; 41(1): 329.     CrossRef
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    Wu Wenjie, Yiyi Chen, Liu Ye
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    Journal of Occupational & Environmental Medicine.2019; 61(6): e291.     CrossRef
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    Yiyi Chen, Mark Stephens, Colin A. Jones
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  • The relationship between night work and involuntary weight change: data from the fifth Korea National Health and Nutrition Examination Survey (KNHANES 2010–2012)
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    Annals of Occupational and Environmental Medicine.2016;[Epub]     CrossRef
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    Aline Silva-Costa, Rosane Härter Griep, Lúcia Rotenberg, Christian Cajochen
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The Association between Shift Work and Bone Mineral Density : analysis of 2008-2009 Korean National Health and Nutrition Examination Survey
Jong Ho Wang, Goeun Lee, Jun Taek Song, Jongho Kwon, Hyunrim Choi, Kyunghee Jung-Choi, Sinye Lim
Korean Journal of Occupational and Environmental Medicine 2012;24(3):274-286.   Published online September 30, 2012
DOI: https://doi.org/10.35371/kjoem.2012.24.3.274
AbstractAbstract PDF
OBJECTIVES
The objectives of this study were to explore the association between shift work and the bone mineral density in a representative sample of Korean workers.
METHODS
He data from the Fourth Korean National Health and Nutrition Examination Survey (2008-2009) was used. The participants were Korean workers aged 16 to 60 years. Logistic regression analysis was applied to determine the association between shift work and the bone mineral density after controlling for covariates using the SAS version 9.3 package program.
RESULTS
The blood vitamin D level in shift workers was significantly lower than that of day workers in both males and females. In male shift workers, shift work was significantly associated with a decreased bone mineral density in the femoral neck (odds ratio(OR) 1.42, 95% confidence interval(CI)=1.05~1.92) and lumbar spine (OR 1.53, 95% CI=1.09~2.15) compared to day workers. After controlling for covariates, this association was still significant. In the case of female shift workers, shift work was significantly related to a decreased bone mineral density in the total femur (OR 2.84, 95% CI=1.69~4.79) and lumbar spine (OR 1.58, 95% CI=1.12~2.24). After controlling for covariates, this risk was not statistically significant.
CONCLUSIONS
The blood vitamin D level of shift workers was significantly lower than that of day workers. In male shift workers, shift work can decrease the bone mineral density in the femoral neck and lumbar spine. Prospective studies with information on the shift work intensity and duration and exposuredata to explain mechanisms will be needed.

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    Kyung Sook Kim
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