Banca de DEFESA: ANNY KARINY PEREIRA PEDROSA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ANNY KARINY PEREIRA PEDROSA
DATE: 25/09/2023
TIME: 10:00
LOCAL: https://meet.google.com/cuw-veqw-moq
TITLE:

Time elapsed between dinner and the midpoint of sleep and adiposity in Brazilian adults

KEY WORDS:

Dinner; Meal timing; Sleep; Obesity; Circadian rhythm; Chrononutrition; Body Mass Index.

PAGES: 102
BIG AREA: Ciências da Saúde
AREA: Nutrição
SUMMARY:

Recent studies in the field of chrononutrition have been demonstrating the importance of temporal patterns of food intake on adiposity, suggesting that meals timing delay and its proximity to bedtime play an important role in increasing obesity and other chronic diseases. However, there is still a lack of evidence to confirm these hypotheses, especially in Brazil. The aim of this study was to analyze whether the Time elapsed between Dinner and the Midpoint of sleep (TDM) is associated with body mass index (BMI) among Brazilian adults. This dissertation is structured into two main sections: a literature review, encompassing relevant topics with a focus on the science of Chrononutrition, which refers to the circadian timing of food intake, and an original article to fulfill the main objective, which was conducted using data from the national survey SONAR-Brazil, aimed at investigating chronobiological aspects of sleep, dietary intake, and nutrition in Brazilian adults. This is a cross-sectional study with virtual data collection, with the population consisting of Brazilian adults aged 18 to 65, excluding pregnant women, residing in Brazil. Data were collected using Google Forms, and the generated responses were automatically stored in spreadsheets compatible with Microsoft Office Excel and subsequently transferred to the statistical software Stata/IC14.0 (StataCorp LP, College Station, USA) for data analysis. To assess the differences in BMI associated with TDM, we conducted linear and quantile regression analyses. Logistic regression models were fitted to evaluate the ORs (95% CI) of obesity associated with TDM. Restricted cubic splines were also used to examine the shape of the association. Among the 1303 Brazilians analyzed, we found a dose-response association between TDM and BMI, which decreased by 0.22 Kg/m² for each additional hour of TDM, with stronger and larger effects in the highest BMI percentile. As TDM increased, the odds of obesity decreased [OR(95% CI): 0.87 (0.78, 0.97); P=0.01]. These associations were independent of age, sex, marital status, weekly duration of physical activity, and the largest meal of the day. We concluded that having dinner further away from the midpoint of sleep was significantly associated with lower BMI, and our data suggest that assessing the circadian timing of meals, along with energy intake and meal quality, in nutritional recommendations is relevant for the treatment, prevention, and control of obesity among the Brazilian population.

COMMITTEE MEMBERS:
Externo(a) à Instituição - MAYSA HELENA DE AGUIAR TOLONI - UFLA
Presidente - 2033316 - GIOVANA LONGO SILVA
Interno(a) - 1635142 - RISIA CRISTINA EGITO DE MENEZES