Adjusting to different shift work schedules tracked by sleep logs and activity monitors

Sleep efficiency was higher during day shifts compared to night and swing shifts in offshore oil workers.

• Adaptation to swing shifts was more challenging than to regular day and night shifts regarding sleep quality.
• Sleep quality was better during swing shifts than during regular day or night shifts in the first week of work.
• Total sleep time was longer during both day and night shifts compared to swing shifts across the two work weeks.
• Sleep efficiency, as reported in sleep diaries, was consistently higher during day shifts than during night and swing shifts.
• There were no significant differences in sleep during the readaptation phase following the work period across different shift schedules.

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