Dados do Trabalho

Título

Sleep and eating behavior in adults: a pilot study

Introdução

Sleep duration and quality have been associated with eating behaviors. Short sleep duration and worse sleep quality are associated to weight gain through worsening eating habits as increased intake of high energy density and reduced in natura food groups. Specific eating behaviors as uncontrolled eating (UE), emotional eating (EE) and, cognitive restrain (CR) might be also influenced by sleep quality and then contribute to eating pattern.

Objetivo

To identify specific eating behaviors related to sleep pattern in adults.

Métodos

This is a transversal design pilot study developed with nine adult participants (5 female). It were evaluated Sleep-awake cycle by 14 days of actigraphy, sleep quality by Pittsburg Sleep Quality Index (PSQI) and, eating behavior by the Three-factor Eating Questionnaire (TFEQ-21). Also body weight and composition were evaluated using bioelectrical impedance. This study was approved by Human Ethical Comitee (protocol: 3.164.884) from Federal University of Lavras-Brazil. Analysis were performed comparing groups distributed by: Total sleep time (TST: <7h/night or >7h/night), Time of sleep (below 23:00h and after 23:00h) and Sleep Quality (Good: PSQI<5 and Bad: PSQI ≥5). Pearson correlations between variables was performed. Jamovi software (2.3.16 version) was used for analysis and significance level of 5% was adopted.

Resultados

Mean age of participants was 31.0±9.43 years and, mean BMI was 25.0±3.53kg/m2. Participants who slept after 23:00h showed increased score for CR (61.1±15.7; p=0.007) compared to those who slept before 23:00h (24.1±8.48). Also, participants with less than 7h of sleep showed increased score for UE (37.0±6.3; p=0.031) compared to those with higher than 7h of total sleep time (25.0±6.32). No significant differences between eating behaviors and PSQI groups were found. Negative correlation between UE and TST (r=-0.711; p=0.032) and a positive association between the interval of the time of the last meal of the day and time of sleep (r=0.684; p=0.042) were found.

Conclusões

This pilot study suggests that sleep late might be related to increase CR and, lower sleep duration is associated to increase UE. These relationships might contribute to increase energy intake and weight gain in adult population.

Palavras -chave

sleep, eating behavior, weigh gain, actigraphy.