Banca de QUALIFICAÇÃO: RICARDO ANDRADE BEZERRA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : RICARDO ANDRADE BEZERRA
DATE: 09/06/2026
TIME: 08:30
LOCAL: https://meet.google.com/nkt-svaa-vwi
TITLE:

Movement Behaviors and Sedentary Patterns Among Brazilian Adolescents: A Study Based on the Brazilian National School Health Survey 2012, 2015, and 2019

KEY WORDS:

Movement behaviors; Intersectionality; Sedentary behavior; Adolescence; Brazilian National School Health Survey

PAGES: 116
BIG AREA: Ciências da Saúde
AREA: Saúde Coletiva
SUBÁREA: Epidemiologia
SUMMARY:

Introduction: Adolescence is a critical period for the consolidation of movement behaviors that influence health and lifestyle trajectories across the life course. Sedentary behavior and physical inactivity are distinct constructs, and their co-occurrence gives rise to sedentary patterns that vary according to social determinants. Objective: To investigate patterns of movement behaviors and sedentary lifestyles among Brazilian adolescents, as well as their associations with lifestyle habits, health status, and social markers of difference. Methods: Article 1: A cross-sectional study using data from the Pesquisa Nacional de Saúde do Escolar (PeNSE) 2019 examined the association between movement behavior profiles (physical activity or physical inactivity combined with high or low television/screen time) and lifestyle variables, dietary consumption, and health status. Article 2: A cross-sectional and time-trend study using data from PeNSE 2012, 2015 and 2019 analyzed the association between sedentary behavior related to screen or television use and an independent intersectionality variable combining race, sex, and maternal education. In both studies, complex survey design analysis was applied, with Poisson regression models adjusted to estimate prevalence ratios, with 95% confidence intervals (95% CI) and a significance level of p<0.05. Results: In Article 1, based on PeNSE 2019 data, profiles were constructed by combining accumulated physical activity with different forms of sedentary behavior (television time and overall screen time). Physically inactive adolescents with low screen time showed a lower prevalence of both healthy and unhealthy food consumption, a lower likelihood of purchasing food at school canteens, and lower alcohol use and smoking. However, they exhibited a higher prevalence of eating meals in front of screens, suggesting that even with reduced screen exposure, other dimensions of eating behavior remain affected. In Article 2, patterns of physical inactivity combined with high television time decreased between 2012 and 2019, whereas sedentary behavior associated with multiple screens initially declined and subsequently increased, indicating transitions in sedentary patterns. Intersectional dimensions of gender, race, and maternal education defined distinct profiles: Black girls with lower maternal education exhibited unique sedentary patterns, reflecting structural constraints and inequalities in access to different electronic devices. Differences across screen types and intersectional groups suggest that the experience of sedentary behavior is shaped by overlapping vulnerabilities and social contexts. Conclusion: The combined findings indicate that, among Brazilian adolescents, both sedentary behavior and physical inactivity are complexly associated with dietary habits, health perception, and social inequalities. Reducing screen time emerges as an important, yet insufficient, strategy to mitigate adverse impacts on dietary behaviors. Intersectional analyses highlight that policies and interventions should account for the matrix of inequalities and the evolving nature of screen exposure, in order to promote more equitable and effective health strategies.

 

COMMITTEE MEMBERS:
Presidente - 2305247 - ISABELLE RIBEIRO BARBOSA MIRABAL
Interna - 2149611 - CLELIA DE OLIVEIRA LYRA
Externo ao Programa - 3138718 - RICARDO SANTOS OLIVEIRA - UFRN