Volume 34, Issue 4 e14434
RESEARCH ARTICLE

Associations among chronotype and eating habits in adolescents are affected by study shift: A cross-sectional study

Raphael Corrêa Martins

Raphael Corrêa Martins

Federal Center for Technological Education Celso Suckow da Fonseca, Rio de Janeiro, Brazil

Postgraduate Program in Food, Nutrition and Health (PPG-ANS), State University of Rio de Janeiro, Rio de Janeiro, Brazil

Contribution: Conceptualization, Methodology, Formal analysis, ​Investigation, Writing - original draft, Writing - review & editing

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Flávia dos Santos Barbosa Brito

Flávia dos Santos Barbosa Brito

Department of Social Nutrition – Institute of Nutrition, State University of Rio de Janeiro, Rio de Janeiro, Brazil

Contribution: Methodology, Formal analysis, Writing - review & editing, Supervision

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Cintia Chaves Curioni

Corresponding Author

Cintia Chaves Curioni

Department of Social Nutrition – Institute of Nutrition, State University of Rio de Janeiro, Rio de Janeiro, Brazil

Correspondence

Cintia Chaves Curioni, São Francisco Xavier, 524–12° andar, Bloco E, sala 12008, Maracanã, Rio de Janeiro, RJ, 20550-170, Rio de Janeiro, Brazil.

Email: [email protected]

Contribution: Conceptualization, Methodology, Writing - review & editing, Supervision, Project administration, Funding acquisition

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First published: 08 December 2024

Summary

We investigated the influence of chronotype on eating habits among adolescents attending schools with morning (07:00 hours–12:00 hours) or afternoon (13:00 hours–18:00 hours) shifts, hypothesizing that incompatibility of study schedules may be related to dietary choices. In this cross-sectional study, 734 adolescents (aged 14–19 years) completed an online questionnaire covering eating habits, chronotype, sleep duration, social jet lag, socioeconomic data, physical activity and anthropometric measures. Odds ratios with 95% confidence intervals were estimated using adjusted logistic regression, stratified by study shift. In the morning shift, a morning chronotype was associated with higher odds of breakfast (odds ratio: 3.47; 95% confidence interval: 1.13–10.71) compared with an evening chronotype. Both morning and intermediate chronotypes were associated with higher odds of morning snack (odds ratio: 3.52; 95% confidence interval: 1.13–10.93; and odds ratio: 2.87; 95% confidence interval: 1.18–6.99) and lower odds of fast foods (odds ratio: 0.09; 95% confidence interval: 0.02–0.49; and odds ratio: 0.19; 95% confidence interval: 0.58–0.62). In the afternoon shift, a morning chronotype was associated with higher odds of breakfast (odds ratio: 5.22; 95% confidence interval: 1.85–14.72), beans (odds ratio: 3.57; 95% confidence interval: 1.19–10.74), vegetables (odds ratio: 3.52; 95% confidence interval: 1.28–9.69) and fruits (odds ratio: 4.50; 95% confidence interval: 1.55–13.07) compared with an evening chronotype. Intermediate chronotype was associated with higher odds of breakfast (odds ratio: 3.71; 95% confidence interval: 2.03–6.77), morning snacks (odds ratio: 2.45; 95% confidence interval: 1.09–5.50), vegetables (odds ratio: 1.92; 95% confidence interval: 1.03–3.58) and fruits (odds ratio: 2.50; 95% confidence interval: 1.27–4.89), and lower odds of high-energy intake post-dinner (odds ratio: 0.43; 95% confidence interval: 0.22–0.85). Adolescents with an evening chronotype had lower odds of having breakfast. Both chronotype and study shifts influenced specific food consumption habits.

CONFLICT OF INTEREST STATEMENT

On behalf of all authors, the corresponding author states that there is no conflict of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available on request from the corresponding author. The data for this study are not currently publicly available, as they are part of a larger dataset that will be used for another purpose.

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