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Shift-Work Schedule Intervention for Extending Restart Breaks after Consecutive Night Shifts: A Non-randomized Controlled Cross-Over Study

Author

Listed:
  • Tomohide Kubo

    (National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan)

  • Shun Matsumoto

    (National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan)

  • Shuhei Izawa

    (National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan)

  • Hiroki Ikeda

    (National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan)

  • Yuki Nishimura

    (National Institute of Occupational Safety and Health, Nagao 6-21-1, Tama-Ku, Kawasaki 214-8585, Japan)

  • Sayaka Kawakami

    (Research Center for Child Mental Development, Hamamatsu University School of Medicine, Handayama 1-20-1, Higashi-ku, Shizuoka 431-3192, Japan)

  • Masako Tamaki

    (Cognitive Somnology RIKEN Hakubi Research Team, RIKEN Cluster for Pioneering Research, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
    Cognitive Somnology RIKEN Hakubi Research Team, RIKEN Center for Brain Science, Hirosawa 2-1, Wako, Saitama 351-0198, Japan)

  • Sanae Masuda

    (Nursing Department, Kanto Rosai Hospital, Kizukisumiyoshi 1-1, Nakahara-ku, Kawasaki 211-8510, Japan)

Abstract

More knowledge is required to determine the optimal shiftwork schedule to reduce the harmful effects of short restart breaks between shifts. This 5-month intervention study aimed to examine the effectiveness of extended restart breaks from 31 h to 55 h after consecutive night shifts by considering the characteristics of the circadian rhythm to mitigate fatigue and sleep among 30 shift-working nurses. Subjective and objective variables, such as vital exhaustion, distress, hair cortisol, salivary C-reactive protein, and sleep mattress sensor sensation, were repeatedly measured to examine the differences between the intervention and control conditions. Two-way (condition × time) multilevel analyses showed significantly lower levels of vital exhaustion and distress in the intervention condition ( p = 0.005 and p = 0.004, respectively). However, the expected benefit of the intervention was not observed in objectively measured variables. These findings suggested that an extended restart break after consecutive night shifts can moderately decrease occupational fatigue and stress.

Suggested Citation

  • Tomohide Kubo & Shun Matsumoto & Shuhei Izawa & Hiroki Ikeda & Yuki Nishimura & Sayaka Kawakami & Masako Tamaki & Sanae Masuda, 2022. "Shift-Work Schedule Intervention for Extending Restart Breaks after Consecutive Night Shifts: A Non-randomized Controlled Cross-Over Study," IJERPH, MDPI, vol. 19(22), pages 1-16, November.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:22:p:15042-:d:973514
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