Effect of shift work on body mass index and metabolic parameters

Morikawa, Yuko; Nakagawa, Hideaki; Miura, Katsuyuki; Soyama, Yoshiyuki; Ishizaki, Masao; Kido, Teruhiko; Naruse, Yuchi; Suwazono, Yasushi; Nogawa, Kôji

doi:10.5271/sjweh.1063

Cited by 155 publications

(153 citation statements)

References 21 publications

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“…Lorenzo et al studied the effect shift work on BMI and found that shiftwork has impact on weight, BMI, and waist circumference that confirmed the findings of the present study (21). Morikawa et al showed that overweight among shift workers was more than the day workers, which is consistent with the results of this study (22). The relationship between shift work and obesity has been observed in longitudinal studies such as the studies by Niedhammer and Biggi.…”

Section: Discussionsupporting

confidence: 91%

The relationship of body mass index and waist-hip ratio with shift work among military personnel in 2016

Sartang

Ashnagar²,

Habibi

et al. 2015

JOHE

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Background: Today, obesity is considered as a health problem that increases the risk of some diseases. Therefore, identifying the effective factors on obesity is of great importance. Shift work is one of the indicators for increased risk of obesity in society and also shift work may cause various health problems for workers in military organizations. The current study aimed to investigate the relationship between shift work, and body mass index (BMI) and waist-hip ratio (WHR) among military personnel in 2016. Materials and Methods:This cross-sectional study was carried out on 100 male military personnel in Southern Iran in June-July 2016. The participants were divided into two groups based on their working schedule; shift work (50 personnel) and day work (50 personnel). The two groups were similar in terms of type of work. The subjects were selected through simple random sampling. The data collection tools consisted of a tape measure and a digital balance. Data analysis and comparison of BMI and WHR in the two groups were performed using descriptive statistics, one-way ANOVA, and Pearson correlation in SPSS. Results: The findings revealed that mean body weight, waist circumference, hip circumference, BMI, and WHR were higher in shift workers than day workers. The findings of the current study showed that 81.6% of shift workers had a BMI of higher than 25 kg/m 2 and 80.3% of shift workers had a WHR of higher than 0.90 m. Moreover, 86.2% of day workers had a BMI of less than 25 kg/m 2 and 83.1% of days workers had a WHR of less than 0.90 m. The Pearson correlation coefficient for BMI (r = 0.71) and WHR (r = 0.64) in shift workers were higher than day workers. Conclusions: The findings of this research showed that shift work increased the risk of overweight and obesity. Increased BMI and WHR are the cause of disease and require intervention measures (job rotation, sports activities, and avoidance of long duration of shift work) among shift workers.

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Section: Discussionsupporting

confidence: 91%

The relationship of body mass index and waist-hip ratio with shift work among military personnel in 2016

Sartang

Ashnagar²,

Habibi

et al. 2015

JOHE

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“…This is in line with the results of our previous study in nurses [28] as well as with the results of several other studies [17,20,24,27,32]. Links between overweight (obesity) or weight gain and the night shift work have been studied most frequently [14][15][16][17]20,21,23,24,27,29,31,33,39,[44][45][46][47][48][49][50][51][52], with majority of the studies reporting positive association [14][15][16][17]20,23,24,27,31,39,[44][45][46][48][49][50][51]. The recently published review of longitudinal studies addressing weight change vs. shift work by Drongelen et al identified 8 such studies (2 retrospective and 6 prospective) with the follow up period from 12 months to 14 years …”

Section: Ijomeh 2014;27(5)supporting

confidence: 91%

“…Night shift work might have an impact on personal life, in particular social and family life [12]. Moreover, unhealthy lifestyle changes have been suggested as contributors in the etiology of potential health effects of shift work [13] and the evidence for the association between night shift work and lifestyle factors, like smoking [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28], alcohol consumption [15,17,18,20,24,27,[29][30][31][32], physical activity [21,25,27,29,33] and dietary habits [34] has been mounting. Nevertheless, epidemiological data on this subject are so far relatively sparse and inconclusive.…”

Section: Introductionmentioning

confidence: 99%

Night shift work and modifiable lifestyle factors

Pepłońska¹,

Burdelak²,

Krysicka³

et al. 2014

IJOMEH

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Objectives: Night shift work has been linked to some chronic diseases. Modification of lifestyle by night work may partially contribute to the development of these diseases, nevertheless, so far epidemiological evidence is limited. The aim of the study was to explore association between night shift work and lifestyle factors using data from a cross-sectional study among blue-collar workers employed in industrial plants in Łódź, Poland. Material and Methods: The anonymous questionnaire was self-administered among 605 employees (236 women and 369 men, aged 35 or more) -434 individuals currently wor king night shifts. Distribution of the selected lifestyle related factors such as smoking, alcohol drinking, physical activity, body mass index (BMI), number of main meals and the hour of the last meal was compared between current, former, and never night shift workers. Adjusted ORs or predicted means were calculated, as a measure of the associations between night shift work and lifestyle factors, with age, marital status and education included in the models as covariates. Results: Recreational inactivity (defined here as less than one hour per week of recreational physical activity) was associated with current night shift work when compared to never night shift workers (OR = 2.43, 95% CI: 1.13-5.22) among men. Alcohol abstinence and later time of the last meal was associated with night shift work among women. Statistically significant positive relationship between night shift work duration and BMI was observed among men (p = 0.029). Conclusions: This study confirms previous studies reporting lower exercising among night shift workers and tendency to increase body weight. This finding provides important public health implication for the prevention of chronic diseases among night shift workers. Initiatives promoting physical activity addressed in particular to the night shift workers are recommended.

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“…Decreased sleep is associated with increased risk for obesity, diabetes, and hypertension (15)(16)(17). These combined effects during circadian misalignment may provide a mechanism underlying the increased risk for obesity, hypertension, and diabetes in shift workers (3,5,6).…”

Section: Discussionmentioning

confidence: 99%

Adverse metabolic and cardiovascular consequences of circadian misalignment

Scheer

Hilton

Mantzoros

et al. 2009

Proc. Natl. Acad. Sci. U.S.A.

1,870

1,489

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There is considerable epidemiological evidence that shift work is associated with increased risk for obesity, diabetes, and cardiovascular disease, perhaps the result of physiologic maladaptation to chronically sleeping and eating at abnormal circadian times. To begin to understand underlying mechanisms, we determined the effects of such misalignment between behavioral cycles (fasting/ feeding and sleep/wake cycles) and endogenous circadian cycles on metabolic, autonomic, and endocrine predictors of obesity, diabetes, and cardiovascular risk. Ten adults (5 female) underwent a 10-day laboratory protocol, wherein subjects ate and slept at all phases of the circadian cycle-achieved by scheduling a recurring 28-h ''day.'' Subjects ate 4 isocaloric meals each 28-h ''day.'' For 8 days, plasma leptin, insulin, glucose, and cortisol were measured hourly, urinary catecholamines 2 hourly (totaling Ϸ1,000 assays/ subject), and blood pressure, heart rate, cardiac vagal modulation, oxygen consumption, respiratory exchange ratio, and polysomnographic sleep daily. Core body temperature was recorded continuously for 10 days to assess circadian phase. Circadian misalignment, when subjects ate and slept Ϸ12 h out of phase from their habitual times, systematically decreased leptin (؊17%, P < 0.001), increased glucose (؉6%, P < 0.001) despite increased insulin (؉22%, P ‫؍‬ 0.006), completely reversed the daily cortisol rhythm (P < 0.001), increased mean arterial pressure (؉3%, P ‫؍‬ 0.001), and reduced sleep efficiency (؊20%, P < 0.002). Notably, circadian misalignment caused 3 of 8 subjects (with sufficient available data) to exhibit postprandial glucose responses in the range typical of a prediabetic state. These findings demonstrate the adverse cardiometabolic implications of circadian misalignment, as occurs acutely with jet lag and chronically with shift work. autonomic nervous system ͉ diabetes ͉ glucose metabolism ͉ leptin ͉ obesity A pproximately 8.6 million Americans perform shift work (1), which is associated with increased risk of obesity, diabetes, and cardiovascular disease (2-6). The endogenous circadian timing system, including the suprachiasmatic nucleus (SCN) in the hypothalamus and peripheral oscillators in vital organs, optimally regulates much of our physiology and behavior across the 24-h day when it is properly aligned with the sleep/wake cycle. However, shift work is generally associated with chronic misalignment between the endogenous circadian timing system and the behavioral cycles, including sleep/wake and fasting/ feeding cycles (7,8). Shift workers often experience symptoms akin to jet lag, with gastrointestinal complaints, fatigue, and sleepiness during the scheduled wake periods, and poor sleep during the daytime sleep attempts (9). Moreover, chronic circadian misalignment has been proposed to be the underlying cause for the adverse metabolic and cardiovascular health effects of shift work (10, 11). The SCN regulates circadian rhythms in leptin, plasma glucose, glucose tolerance, corticosteroids, and ...

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Effect of shift work on body mass index and metabolic parameters

Cited by 155 publications

References 21 publications

The relationship of body mass index and waist-hip ratio with shift work among military personnel in 2016

The relationship of body mass index and waist-hip ratio with shift work among military personnel in 2016

Night shift work and modifiable lifestyle factors

Adverse metabolic and cardiovascular consequences of circadian misalignment

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