Dados do Trabalho

Título

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

Introdução

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

Objetivo

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

Métodos

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).

Resultados

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.

Conclusões

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.

Palavras-chave

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