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Duration and quality of sleep associated with food consumption among overweight night workers


Short sleep duration and poor sleep quality have been associated with inadequate food intake among night shift workers and may contribute to overweight.


To evaluate the association between sleep duration and sleep quality with food intake among overweight night workers, according work day and one day off.


We performed a double-blind randomized clinical crossover trial.The present study used only data extracted from the baseline, performed with 39 overweight nursing professionals who worked permanent night shifts. Calories and macronutrients intake were assessed by food diaries (from 19:00 to 19:00 h) on one work day and one day off. Self-reported sleep quality was taken from a single question of the Pittsburgh Sleep Quality Index and overall sleep duration was calculated from the Munich ChronoType Questionnaire (MCTQshift).


The mean age of the participants was 39.2 years (SE=0.9 years). Most of them were nurses (51.3%) and married (64.1%). A total of 43.6% reported poor sleep quality and 20.5% had short sleep duration (<5 hours). The mean time working in the current night shift was 5.6 years (SE=0.6 years). On the working day, there was lower protein intake (65.8g, SE=8.2g) among those with poor sleep quality compared to those who reported good sleep quality (88.9g, SE=7.2g). There was a tendency of lower carbohydrate consumption, on the working day, among those who slept < 5h (166.4g, SE=32g) and reported poor sleep quality (189.3g, SE=22g) compared to those who slept ≥5h (232.1g, SE=16.3g) and reported good sleep quality (241,3g, SE=19,3g). There was no association between total calories and fat consumption with the aspects of sleep on the working day. No association was verified among the variables on the day off.


A lower carbohydrate and protein intake was observed on the workday among the participants with short sleep duration and poor sleep quality, so these aspects of sleep did not impair the dietary pattern of these macronutrients.


Food Consumption; Night work; Nursing; Nutrition; Public Health Nutrition.


Área Clínica


1Department of Epidemiology, Public Health Graduate Program, Catholic University of Santos - Sao Paulo - Brasil, 2Department of Health, Life Cycles and Society, School of Public Health, University of São Paulo - Sao Paulo - Brasil, 3Stress Research Institute, University of Stockholm, Sweden - - Suécia


Gabriella Habib Rodrigues, Adriana Souza Duarte, Ananda Laís Felix Garrido, Patricia Teixeira Santana, Luciana Fidalgo Ramos Nogueira, Pollyanna Pellegrino, José Cipolla-Neto, Claudia Roberta Castro Moreno, Elaine Cristina Marqueze