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Related Experiment Video

Updated: Apr 23, 2026

Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
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Night shift work and modifiable lifestyle factors.

Beata Pepłońska1, Weronika Burdelak, Jolanta Krysicka

  • 1Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, Łódź, Poland, beatap@imp.lodz.pl.

International Journal of Occupational Medicine and Environmental Health
|September 15, 2014
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Summary

Night shift work is linked to lower physical activity and increased body mass index (BMI) in men, and alcohol abstinence and later meal times in women. These findings highlight the need for targeted public health interventions for night shift workers.

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Area of Science:

  • Occupational Health
  • Epidemiology
  • Lifestyle Medicine

Background:

  • Night shift work is associated with chronic diseases, but epidemiological evidence on lifestyle modifications is limited.
  • Understanding the link between night shift work and lifestyle factors is crucial for disease prevention.

Purpose of the Study:

  • To investigate the association between night shift work and various lifestyle factors.
  • To analyze data from a cross-sectional study of blue-collar industrial workers in Poland.

Main Methods:

  • A self-administered questionnaire was used to collect data from 605 employees (aged 35+).
  • Lifestyle factors including physical activity, alcohol consumption, BMI, and meal timing were compared between current, former, and never night shift workers.
  • Adjusted odds ratios and predicted means were calculated, controlling for age, marital status, and education.

Main Results:

  • Men working night shifts showed recreational inactivity (OR=2.43) and a positive association between shift duration and BMI (p=0.029).
  • Women working night shifts were associated with alcohol abstinence and later last meal times.
  • The study included 434 current night shift workers.

Conclusions:

  • Confirms lower physical activity and increased body weight among night shift workers.
  • Findings have public health implications for chronic disease prevention in this population.
  • Recommends initiatives promoting physical activity specifically for night shift workers.