• Nutrition · Mar 2021

    Randomized Controlled Trial

    Eating habits, sleep, and a proxy for circadian disruption are correlated with dyslipidemia in overweight night workers.

    • Ananda Laís Felix Garrido, Adriana de Sousa Duarte, Patrícia Teixeira Santana, Gabriella Habib Rodrigues, Pollyanna Pellegrino, Luciana Fidalgo Ramos Nogueira, José Cipolla-Neto, Moreno Claudia Roberta de Castro CRC Department of Health, Life Cycles and Society, School of Public Health, University of São Paulo, Sao Paulo, Brazil; Department of Psy, and Elaine Cristina Marqueze.
    • Center for Applied Social and Health Sciences, Undergraduate Nursing, Catholic University of Santos, Sao Paulo, Brazil.
    • Nutrition. 2021 Mar 1; 83: 111084.

    ObjectiveThe aim of this study was to evaluate the relationship between proxy for circadian disruption, eating habits, sleep characteristics, and dyslipidemic parameters.MethodsThis was a randomized, double-blind, crossover controlled clinical trial, and for this study, only baseline data were used. The sample was composed of 36 overweight female nurses who worked on a fixed night shift (12 × 36 h). Linear regression models were used to assess the relationship between the mentioned variables.ResultsThe participants' average age was 39.4 y (Standard error (SE) 1 y) and the average nighttime sleep duration was 5.76 h (SE 0.16 h). The average chronotype indicated a moderate early type (03:03 h; SE 20 min) and the average social jetlag was 03:42 h (SE 10 min). It was found that 1 h less of nighttime sleep increased very-low-density lipoprotein cholesterol levels by 2.75 mg/dL and triacylglyceride levels by 3.62 mg/dL. Additionally, higher social jetlag was associated with higher low-density lipoprotein cholesterol levels. On the other hand, each additional hour in the chronotype increased high-density lipoprotein cholesterol levels by 3.06 mg/dL and a time interval >2 h between the last meal and sleep onset was associated with higher high-density lipoprotein cholesterol levels.ConclusionShort duration of nighttime sleep and high social jetlag are risk factors for dyslipidemia, whereas the late type and the longer time interval between the last meal and sleep onset appear to be protective factors for dyslipidemia.Copyright © 2020 Elsevier Inc. All rights reserved.

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