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Innovative working schedule: introducing one short nap during the night shift
A Bonnefond1, A Muzet, A S Winter-Dill
1CEPA/Centre National de la Recherche Scientifique, Strasbourg, France. anne.bonnefond@c-strasbourg.fr
Ergonomics
|October 30, 2001
Summary
A year-long study found that short naps during night shifts improved worker satisfaction, vigilance, and quality of life. These naps did not negatively impact main sleep duration, offering a positive solution for shiftwork challenges.
Area of Science:
- Occupational Health
- Sleep Medicine
- Industrial Psychology
Background:
- Night shift work is associated with reduced vigilance and increased risk of errors.
- Maintaining alertness during late-night hours is a significant challenge for shiftworkers.
- Previous research suggests short naps may mitigate some negative effects of shiftwork.
Purpose of the Study:
- To evaluate the long-term effects of implementing short naps during night shifts.
- To assess the impact of napping on shiftworker vigilance, mood, work quality, and overall life quality.
- To determine if napping affects the duration and quality of main sleep periods.
Main Methods:
- A 1-year study involving 12 industrial plant shiftworkers.
- Participants were permitted 1-hour naps between 23:30 and 03:30 under specific conditions.
- Daily questionnaires tracked sleep schedules, nap usage, mood, and work quality, supplemented by bi-monthly extensive questionnaires.
Main Results:
- Shiftworkers reported general satisfaction with night work, improved vigilance post-nap, and enhanced work quality.
- Most participants experienced improved quality of life and increased nap efficacy over time.
- No detrimental effects on main sleep duration were observed, though sleep duration varied significantly between different shifts.
Conclusions:
- Short naps during night shifts are a viable strategy to enhance vigilance and counteract fatigue.
- Implementing napping can lead to improved job satisfaction and overall quality of life for shiftworkers.
- The study provides encouraging evidence for the positive long-term effects of napping in industrial shiftwork settings.
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