Social Jetlag in Night Workers Linked to Less Moderate or Vigorous Exercise and Lower Activity-Related Energy Use

Among 423 shift workers, the prevalence of insufficiently active individuals was high across all shifts.

• Physical activity levels were assessed using the International Physical Activity Questionnaire (IPAQ-SF).
• Social jetlag (SJL) was calculated based on mid-sleep times on work and free days.
• Negative associations were found between SJL and various measures of physical activity among night-shift workers.
• No significant differences in sedentary behavior were observed between different work shifts.
• The findings indicate that SJL may negatively impact physical activity levels in night-shift workers.

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