Effects of 90 Min Napping on Fatigue and Associated Environmental Factors among Nurses Working Long Night Shifts: A Longitudinal Observational Study

Kazuhiro Watanabe, Naotaka Sugimura, Inaho Shishido, Issei Konya, Shinya Yamaguchi and Rika Yano
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Kazuhiro Watanabe: Graduate School of Health Sciences, Hokkaido University, Sapporo 060-0812, Japan
Naotaka Sugimura: Graduate School of Health Sciences, Hokkaido University, Sapporo 060-0812, Japan
Inaho Shishido: Faculty of Health Sciences, Hokkaido University, Sapporo 060-0812, Japan
Issei Konya: Graduate School of Health Sciences, Hokkaido University, Sapporo 060-0812, Japan
Shinya Yamaguchi: Graduate School of Health Sciences, Hokkaido University, Sapporo 060-0812, Japan
Rika Yano: Faculty of Health Sciences, Hokkaido University, Sapporo 060-0812, Japan

IJERPH, 2022, vol. 19, issue 15, 1-18

Abstract: For nurses working long night shifts, it is imperative that they have the ability to take naps to reduce fatigue, and that an appropriate environment is prepared where such naps can be taken. We verified the effects of 90 min napping on fatigue and the associated factors among nurses working 16-h night shifts. We investigated 196-night shifts among 49 nurses for one month. Wearable devices, data logging devices, and questionnaires were used to assess nap parameters, fatigue, and environmental factors such as the napping environment, ways of spending breaks, and working environment. Nurses who nap at least 90 min on most night shifts had more nursing experience. Multivariable logistic regression analysis showed that the environmental factors significantly associated with total nap duration (TND) ≥ 90 min were noise, time spent on electronic devices such as cellphones and tablets during breaks, and nap break duration. The night shifts with TND ≥ 90 min showed lower drowsiness after nap breaks and less fatigue at the end of night shift compared to those with TND < 90 min. Nurses and nursing managers should recognize the importance of napping and make adjustments to nap for at least 90 min during long night shifts.

Keywords: environment; fatigue; long working hours; nap; nurses; shift work; sleep hygiene (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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