Rotating night shift work and non-alcoholic fatty liver disease among steelworkers in China: a cross-sectional survey

2020 ◽  
Vol 77 (5) ◽  
pp. 333-339 ◽  
Author(s):  
Shengkui Zhang ◽  
Yongbin Wang ◽  
Zhende Wang ◽  
Han Wang ◽  
Chao Xue ◽  
...  
Keyword(s):  
Shift Work ◽  
Average Length ◽  
Night Shift ◽  
Average Frequency ◽  
Cumulative Number ◽  
Shift Workers ◽  
Alcoholic Fatty Liver ◽  
Night Shift Work ◽  
Cumulative Length ◽  
Night Shifts

ObjectivesIn a 24/7 society, the negative metabolic effects of rotating night shift work have been increasingly explored. This study aimed to examine the association between rotating night shift work and non-alcoholic fatty liver disease (NAFLD) in steelworkers.MethodsA total of 6881 subjects was included in this study. Different exposure metrics of night shift work including current shift status, duration of night shifts (years), cumulative number of night shifts (nights), cumulative length of night shifts (hours), average frequency of night shifts (nights/month) and average length of night shifts (hours/night) were used to examine the relationship between night shift work and NAFLD.ResultsCurrent night shift workers had elevated odds of NAFLD (OR, 1.23, 95% CI 1.02 to 1.48) compared with those who never worked night shifts after adjustment for potential confounders. Duration of night shifts, cumulative number of night shifts and cumulative length of night shifts were positively associated with NAFLD. Both the average frequency of night shifts (>7 nights/month vs ≤7 nights/month: OR, 1.24, 95% CI 1.06 to 1.45) and average length of night shifts (>8 hours/night vs ≤8 hours/night: OR, 1.27, 95% CI 1.08 to 1.51) were independently associated with overall NAFLD after mutually adjusting for the duration of night shifts and other potential confounders among night shift workers. No significant association was found in female workers between different exposure metrics of night shift work and NAFLD.ConclusionsRotating night shift work is associated with elevated odds of NAFLD in male steelworkers.

scholarly journals Different exposure metrics of rotating night shift work and hyperhomocysteinaemia among Chinese steelworkers: a cross-sectional study

BMJ Open ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. e041576
Author(s):  
Shengkui Zhang ◽  
Yongbin Wang ◽  
Qinglin Li ◽  
Zhende Wang ◽  
Han Wang ◽  
...  
Keyword(s):  
Shift Work ◽  
Average Length ◽  
Night Shift ◽  
Average Frequency ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Night Shift Work ◽  
Exposure Metrics ◽  
Night Shifts

ObjectiveTo examine the associations of rotating night shift work with hyperhomocysteinaemia (HHcy) odds by different exposure metrics.DesignCross-sectional study.SettingOccupational physical examination centre for steel production workers, Tangshan, China.ParticipantsA total of 6846 steelworkers, aged 22–60 years, from the baseline survey of a Chinese occupational cohort.Primary and secondary outcome measuresDifferent exposure metrics of night shift work, including current shift status, duration of night shifts (years), cumulative number of night shifts (nights), cumulative length of night shifts (hours), average frequency of night shifts (nights/month), average length of night shifts (hours/night) and percentage of hours on night shifts, were used to examine the effects of past and current night shift work on HHcy odds. The total homocysteine concentration in the plasma above 15 µmol/L was defined as HHcy.ResultsCompared with those who never worked night shifts, current night shift workers had elevated odds of HHcy (OR 1.23, 95% CI 1.06 to 1.44). Considering a person’s lifetime work schedule and compared with individuals who never worked night shifts, duration of night shifts >28 years (OR 1.35, 95% CI 1.12 to 1.61), average frequency of night shifts >7 nights/month (OR 1.25, 95% CI 1.07 to 1.47) and percentage of hours on night shifts >30% (OR 1.23, 95% CI 1.05 to 1.43) were associated with higher HHcy odds. The duration of night shifts >20 years and the average frequency of night shifts >7 nights/month could significantly increase the odds of HHcy regardless of whether the average length of night shifts was greater than 8 hours/night. After stratification by sex, no significant association was found in female workers between different exposure metrics of night shift work and HHcy.ConclusionsLong duration and high frequency of night shift work are associated with higher HHcy odds among male steelworkers.

scholarly journals Rotating night shift work, exposure to light at night, and glomerular filtration rate: baseline results from a Chinese occupational cohort

2020 ◽  
Author(s):  
Shengkui Zhang ◽  
Yongbin Wang ◽  
Zhende Wang ◽  
Han Wang ◽  
Chao Xue ◽  
...  
Keyword(s):  
Glomerular Filtration Rate ◽  
Glomerular Filtration ◽  
Shift Work ◽  
Filtration Rate ◽  
Night Shift ◽  
Cumulative Number ◽  
Ambient Light ◽  
Light At Night ◽  
Night Shift Work ◽  
Night Shifts

Abstract Background The misalignment between the circadian clock and behavioral cycles has been implicated in pathogenesis of many diseases. However, whether the kidneys are also more prone to disease in the circumstances of chronic circadian rhythms disruption due to night shift work and light at night (LAN) is unclear. The main purpose of this study is to examine the association between rotating night shift work, exposure to light at night, and glomerular filtration rate among steelworkers in north China. Methods A total of 6869 participants, aged 22 to 60 years, were included in this study. Multivariable logistic regression was used to examine the association between night shift work, the brightness of bedroom ambient light at night (LAN), and estimated glomerular filtration rate (eGFR) with adjustment for potential confounders. The relationship between duration of night shift work (continuous), cumulative number of night shifts (continuous), and eGFR were also examined using restricted cubic spline models. Results Long duration of night shift work (≥29 years) had elevated odds of decreased eGFR (OR, 1.39, 95% CI 1.10–1.75) compared with day work after adjustment for potential confounders. Negative associations between duration of night shift work, cumulative number of night shifts, and eGFR (mL/min/1.73 m 2 ) were observed in RCS models. No significant associations were observed among the different brightness of bedroom ambient light levels: middle level (OR, 0.90, 95% CI 0.77–1.05), lightest level (OR, 0.94, 95% CI 0.75–1.17), and decreased eGFR compared with the darkest level. Conclusion The increased duration of night shift work and cumulative number of night shifts among night shift workers, but not the brightness of bedroom ambient LAN, are associated with a slight decline of renal function among steelworkers.

scholarly journals Relationship between Night shift work, Eating Habits and BMI among Nurses in Lebanon

2020 ◽  
Author(s):  
Zeinab Samhat ◽  
Randa Attieh ◽  
Yonna Sacre
Keyword(s):  
Shift Work ◽  
Dietary Habits ◽  
Eating Habits ◽  
Night Shift ◽  
Cumulative Number ◽  
Anthropometric Measures ◽  
Cross Sectional ◽  
Night Shift Work ◽  
Validated Questionnaire ◽  
Night Shifts

Abstract Background: The objective of this cross-sectional study was to evaluate the relationships between night shift work, eating habits and body mass index (BMI) among Lebanese nurses. Methods: A total of 307 nurses were randomly selected from five hospitals located in Beirut. Data about demographic and professional characteristics, anthropometric measures, dietary habits and intakes were collected through a validated questionnaire. To study the relationship between night shift work, eating habits and BMI, chi-square test, t-test and logistic regressions were used.Results: The majority of nurses (78. 2%) had irregular meals timing with a significant decrease in the number of complete meals consumed during the day and an increase in the number of snacks consumed during night (p<0. 05). The most consumed snacks during night shifts were sweets and potato chips. The findings highlighted that BMI and waist circumference significantly increased with the number of years of work (r=0.175; p<0.05) and the cumulative number of night shifts hours over the entire work history (r=0.135/p< 0. 05). Conclusion: Night shift work is positively associated with abnormal eating patterns and BMI among Lebanese nurses. However the increase in BMI is not related to eating habits.

scholarly journals Night shift work and the risk of metabolic syndrome: Findings from an 8-year hospital cohort

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0261349
Author(s):  
Wan-Ju Cheng ◽  
Chiu-Shong Liu ◽  
Kai-Chieh Hu ◽  
Yu-Fang Cheng ◽  
Kati Karhula ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Shift Work ◽  
Night Shift ◽  
Working Time ◽  
Health Examination ◽  
Long Term Effects ◽  
Time Data ◽  
Shift Workers ◽  
Night Shift Work ◽  
Night Shifts

Objectives Studies concerning the risk of metabolic syndrome associated with night work have shown inconsistent findings, due to imprecise working time data and cross-sectional design. We used register-based daily working time data to examine the risk of incident metabolic syndrome associated with night shift work. Methods Working time data collected between 2010 and 2018 of 5775 Taiwanese hospital workers were used to identify night shift workers and to calculate the number of night shifts. Metabolic syndrome was identified by annual occupational health examination results, which were linked to the working time data. Logistic regression models and generalized estimating equations were used to examine the association between night shift work and metabolic syndrome and the 5 components of metabolic syndrome. Results Night shift work is associated with a higher risk of developing metabolic syndrome (adjusted OR = 1.36, 95% CI = 1.04 to 1.78) and high waist circumference (adjusted OR = 1.27, 95% CI = 1.07 to 1.78) compared to day work. Among night shift workers, increased number of night shifts was associated with high blood pressure (adjusted OR = 1.15, 95% CI = 1.01 to 1.31). Conclusions Night shift work is associated with metabolic risk factors. Long-term effects of circadian rhythm disruption on metabolic disturbances needs to be further studied.

scholarly journals Relationship between Night shift work, Eating Habits and BMI among Nurses in Lebanon

2020 ◽  
Author(s):  
Zeinab Samhat ◽  
Randa Attieh ◽  
Yonna Sacre
Keyword(s):  
Shift Work ◽  
Dietary Habits ◽  
Eating Habits ◽  
Night Shift ◽  
Cumulative Number ◽  
Anthropometric Measures ◽  
Cross Sectional ◽  
Night Shift Work ◽  
Validated Questionnaire ◽  
Night Shifts

Abstract Background The objective of this cross-sectional study was to evaluate the relationships between night shift work, eating habits and body mass index (BMI) among Lebanese nurses. Methods A total of 307 nurses were randomly selected from five hospitals located in Beirut. Data about demographic and professional characteristics, anthropometric measures, dietary habits and intakes were collected through a validated questionnaire. To study the relationship between night shift work, eating habits and BMI, chi-square test, t-test and logistic regressions were used. Results The majority of nurses (78. 2%) had irregular meals timing with a significant decrease in the number of complete meals consumed during the day and an increase in the number of snacks consumed during night (p<0. 05). The most consumed snacks during night shifts were sweets and potato chips. The findings highlighted that BMI and waist circumference significantly increased with the number of years of work (r=0.175; p<0.05) and the cumulative number of night shifts hours over the entire work history (r=0.135/p< 0. 05). Conclusion : Night shift work is positively associated with abnormal eating patterns and BMI among Lebanese nurses. However the increase in BMI is not related to eating habits.

scholarly journals Rotating night shift work, sleep duration and elevated gamma-glutamyl transpeptidase among steelworkers: cross-sectional analyses from a Chinese occupational cohort

BMJ Open ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. e053125
Author(s):  
Qinglin Li ◽  
Shengkui Zhang ◽  
Han Wang ◽  
Chao Xue ◽  
Xiaohong Zhang ◽  
...  
Keyword(s):  
Sleep Duration ◽  
Shift Work ◽  
Night Shift ◽  
Average Frequency ◽  
Lifestyle Factors ◽  
Gamma Glutamyl Transpeptidase ◽  
Cross Sectional ◽  
Night Shift Work ◽  
Glutamyl Transpeptidase ◽  
Night Shifts

ObjectivesThis study aimed to evaluate the separate and combined effects of rotating night shift work and lifestyle factors with elevated gamma-glutamyl transpeptidase (GGT) among steelworkers.Design, setting and participantsThis cross-sectional study used the baseline information from a Chinese occupational cohort. The in-service workers of the production department of Tangsteel Company who participated in the occupational health examination in Tangshan from February to June 2017 were selected as the research objects.Main outcome measuresThe separate and combined effects of rotating night shift work and lifestyle factors with elevated GGT among steelworkers.ResultsThe information of 7031 subjects from the production department of Tangsteel Company was analysed. Results showed that the current shift workers and the workers with the duration of night shifts>19 years, the cumulative number of night shifts>1774 nights, the average frequency of night shifts≤7 nights/month and the average frequency of night shifts>7 nights/month had elevated odds of elevated GGT, compared with those who never worked night shifts, and ORs, (95% CIs) were 1.39, (1.10 to 1.75), 1.46, (1.15 to 1.86), 1.46, (1.15 to 1.85), 1.34, (1.04 to 1.73) and 1.37, (1.09 to 1.74) after adjustment for potential confounders. The independent effect of shorter sleep duration (<7 hours/day) on elevated GGT was not statistically significant. Among workers who had shorter sleep duration, the association between rotating night shift work and elevated GGT was statistically significant, but no associations were found among workers with the sleep duration of ≥7 hours/day. In addition, other lifestyle factors affected the association between rotating night shift work and elevated GGT.ConclusionsRotating night shift work is associated with elevated GGT among steelworkers. In particular, the effect of rotating night shift work on elevated GGT was affected by sleep duration and other lifestyle factors.

scholarly journals Relationship between Night shift work, Eating Habits and BMI among Nurses in Lebanon

2020 ◽  
Author(s):  
Zeinab Samhat ◽  
Randa Attieh ◽  
Yonna Sacre
Keyword(s):  
Shift Work ◽  
Dietary Habits ◽  
Eating Habits ◽  
Night Shift ◽  
Cumulative Number ◽  
Anthropometric Measures ◽  
Cross Sectional ◽  
Night Shift Work ◽  
Validated Questionnaire ◽  
Night Shifts

Abstract Background The objective of this cross-sectional study was to evaluate the relationships between night shift work, eating habits and body mass index (BMI) among Lebanese nurses. Methods A total of 307 nurses were randomly selected from five hospitals located in Beirut. Data about demographic and professional characteristics, anthropometric measures, dietary habits and intakes were collected through a validated questionnaire. To study the relationship between night shift work, eating habits and BMI, chi-square test, t-test and logistic regressions were used. Results The majority of nurses (78. 2%) had irregular meals timing with a significant decrease in the number of complete meals consumed during the day and an increase in the number of snacks consumed during night (p<0. 05). The most consumed snacks during night shifts were sweets and potato chips. The findings highlighted that BMI and waist circumference significantly increased with the number of years of work (r=0.175; p<0.05) and the cumulative number of night shifts hours over the entire work history (r=0.135/p< 0. 05). Conclusion: Night shift work is positively associated with abnormal eating patterns and BMI among Lebanese nurses. However the increase in BMI is not related to eating habits.

scholarly journals Association of Rotating Night Shift Work with Body Fat Percentage and Fat Mass Index among Female Steelworkers in North China

2021 ◽  
Vol 18 (12) ◽  
pp. 6355
Author(s):  
Shengkui Zhang ◽  
Han Wang ◽  
Yongbin Wang ◽  
Miao Yu ◽  
Juxiang Yuan
Keyword(s):  
Shift Work ◽  
Body Fat ◽  
Fat Mass ◽  
Night Shift ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Shift Workers ◽  
Fat Mass Index ◽  
Night Shift Work ◽  
Night Shifts

The aim of this study was to evaluate the associations of rotating night shift work with body fat percentage (BF%) and fat mass index (FMI). A cross-sectional study was conducted among 435 female steelworkers, aged 26–57 years in Tangshan, China. BF% was assessed via bioelectrical impedance analysis and FMI was calculated. Different exposure metrics of night shift work were used to examine the effects of night shift work on BF% and FMI. The duration (years), cumulative number (nights), and cumulative length of night shifts (hours) were positively correlated with FMI and BF%, and these relationships were independent of body mass index (BMI). Compared with day workers, night shift workers with an average frequency of night shifts >7 nights/month (odds ratio (OR) 2.50, 95% confidence interval (CI) 1.17 to 5.35) and percentage of hours on night shifts >30% (OR 2.55, 95% CI 1.21 to 5.39) had elevated odds of obesity (BF% ≥ 35.0%). Nonobese night shift workers by the BMI criterion should also be alert to the risk of the excess accumulation of body fat, which is actually responsible for most obesity-associated adverse health consequences. Health interventions for related populations need to be improved, which is currently more focused on overall weight control.

scholarly journals Working the Night Shift: The Impact of Compensating Wages and Local Economic Conditions on Shift Choice

2014 ◽  
Vol 2014 ◽  
pp. 1-15 ◽  
Author(s):  
Colene Trent ◽  
Walter J. Mayer
Keyword(s):  
Regression Model ◽  
Shift Work ◽  
Night Shift ◽  
Economic Conditions ◽  
Compensating Differentials ◽  
Switching Regression ◽  
Shift Workers ◽  
Night Shift Work ◽  
The Impact ◽  
Night Shifts

The theory of compensating differentials asserts that night shift workers should receive compensating wage differentials due to undesirable work conditions. In weak local economies, workers may have difficulty finding jobs; thus, these workers might be more likely to accept night shift work and be less concerned with the size of the compensating differential for night shifts. Using CPS data from 2001, this paper employs maximum likelihood estimation of an endogenous switching regression model to analyze wages of day and night shift workers and shift choice. The findings indicate the presence of selection bias, thus emphasizing the importance of correcting for self-selection into night shifts. The average of the estimated wage differentials for night shift work is negative for the overall sample, with differentials varying by worker characteristics. The shift differential is found to be a statistically significant predictor of shift choice, indicating that shift premiums play an important role in motivating individuals to select night shift work. Using two measures of local economic conditions and a new method of analyzing interaction effects in the context of an endogenous switching regression model, this paper finds limited evidence that weak local economic conditions lessen the impact of compensating differentials on shift choice.

scholarly journals Disturbances of Autonomic Regulation of Cardiovascular System at Different Working Regimes with Night Shifts

Kardiologiia ◽  
2020 ◽  
Vol 60 (9) ◽  
pp. 62-67
Author(s):  
Yu. A. Merkulov ◽  
A. A. Pyatkov ◽  
S. G. Gorokhova ◽  
D. M. Merkulova ◽  
O. Yu. Atkov
Keyword(s):  
Shift Work ◽  
Spectral Characteristics ◽  
Night Shift ◽  
Autonomic Regulation ◽  
Total Power ◽  
Orthostatic Test ◽  
Heart Rhythm Variability ◽  
Shift Workers ◽  
Rotating Shift Work ◽  
Night Shifts

Aim        To study temporal and spectral characteristics of heart rhythm variability (HRV) in night shift workers.Materials and methods       Along with traditional risk factors, conditions of labor contribute to development of cardiovascular morbidity, including night shift work, which can be associated with disorders of the autonomic regulation detected by analysis of HRV. This study included 100 healthy men. 74 of them were engaged in shift work, including 53 men with rotating shift work, 21 men with fixed night shifts, and 26 men with day-time work. HRV was analyzed by data of 5-min electrocardiogram recording (background recording and orthostatic test).Results   Night-shift workers had decreases in total power of regulation (ТР, SDNN) and in the parasympathetic branch (HF, pNN50). Rotating night-shift workers displayed significant decreases in SDNN and pNN50 and pronounced changes in the VLF / LF / HF ratio in the orthostatic test.Conclusion            In work with night shifts, the type of autonomic regulation differs from the “standard” functioning of the autonomic nervous system (ANS). This study showed different effects of night work regimens on HRV indexes. With the rotating shift work, the ANS dysregulation was more profound and was evident by a significant decrease in the ANS total tone and parasympathetic activity (SDNN, pNN50) compared to night shifts with fixed working hours. The excessive weakening of the parasympathetic component in the passive orthostatic test can be considered as an early marker for ANS maladaptation. 

Sign in / Sign up

Export Citation Format

Share Document