Dados do Trabalho

Título

Influence of social jet lag on food consumption during the first year of bariatric surgery

Introdução

Circadian misalignment is caused by a failure to synchronize endogenous (central and peripheral clocks) and environmental factors. Social Jet Lag (SJL) is a measure that indicates the degree of this misalignment and is related to a higher risk of obesity, changes in metabolic parameters and worse eating patterns. However, the scientific literature is still lacking in studies on the influence of SJL on food consumption in individuals undergoing bariatric surgery.

Objetivo

Evaluate the influence of SJL on food consumption during the first year of bariatric surgery.

Métodos

The study included 122 bariatric patients (83.3% female; 33 years old [28 – 41.7]), 80% of who underwent Gastric Bypass-Y-ROUX. The food consumption was evaluated by two 24-h recalls (24HR) (1 day during the week and 1 day on the weekend) at each evaluation moment (baseline, three months, six months and one year after bariatric surgery) and the Multiple Pass Method was used. Linear regression was performed to analyze the association between the mean SJL and macronutrient and fiber consumption over 1 year of surgery follow-up. The Generalised estimating equations (GEE) was performed to evaluate the effect of time, the isolated effect of SJL, and the interaction between time and SJL throughout the same period of one year. The following adjustments we used in the statistical analysis: sex, age, surgical technique, family income, physical activity, marital status, physical exercise and body mass index (BMI), diabetes and shift work.

Resultados

Linear regression results showed that the greater exposure to SJL, the higher consumption of calories (p=0.01) and protein (p=0.03) after 1 year of surgery. Furthermore, the GEE results showed that the group more exposed to SJL had the higher consumption of calories (p=0.001), carbohydrates (p=0.003), proteins (p=0.001), total fat (p=0.002) and polyunsaturated fat (p= 0.011) when compared with the group less exposed to SJL during the first year of recovery.

Conclusões

SJL was negatively associated with consumption of calories, carbohydrates, proteins, total fats and polyunsaturated fats during the first year after bariatric surgery. However, more studies are needed on this topic to better understand these results in individuals undergoing this surgical intervention.

Palavras -chave

Social jet lag
Bariatric surgery
Food consumption