Chronobiology internationalMar 9, 2023

Translation and testing of the Chrononutrition Profile Questionnaire in Brazilian Portuguese

Circadian Biology Weekly Brief ↗PubMed ↗DOI ↗

Updated Mar 31, 2026

Abstract

A valid and reliable Brazilian version of the Chrononutrition Profile - Questionnaire (CP-Q) was validated with 635 participants.

The average age of participants was 32.4 ± 11.2 years, with a majority being female and single.
Moderate to strong correlations were found between sleep/wake schedules in the CPQ-Brazil, Pittsburgh Sleep Quality Index, and Munich Chronotype Questionnaire.
Correlations were also observed between meal timing variables, such as largest meal and skipping breakfast, with similar measures in a 24-hour recall.
Participants had an average quality of life score of 55.8 ± 17.9.
The CP-Q was translated, culturally adapted, and validated through a systematic process involving translation and expert review.

Simplified

Chrononutrition is a science that studies the relationship between mealtimes and sleep/wake habits. However, these behaviors are not evaluated by a single questionnaire. Therefore, this study aimed to translate and culturally adapt the Chrononutrition Profile - Questionnaire (CP-Q) into Portuguese and validate the Brazilian version. The translation and cultural adaptation process consisted of: translation; synthesis of translations; backtranslation; expert committee and pre-test. The validation was performed with 635 participants (32.4 ± 11.2 years) who answered the CPQ-Brazil and Pittsburgh Sleep Quality Index (PSQI); Munich Chronotype Questionnaire (MCTQ); Night Eating questionnaire; Quality of life and health index (SF-36) and 24 h-recall. The participants were mostly female, single, from the northeastern region, a eutrophic profile, and average quality of life score of 55.8 ± 17.9. Moderate to strong correlations were observed in the sleep/wake schedules between CPQ-Brazil, PSQI and MCTQ, both for work/study days and free days. The correlations between largest meal, skipping breakfast, eating window, nocturnal latency, and last eating event with the same variables in the 24 h-recall showed moderate to strong positive correlations. The translation, adaptation, validation and reproducibility of the CP-Q generates a valid and reliable questionnaire to assess the sleep/wake and eating habits in the Brazilian population.

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Translation and testing of the Chrononutrition Profile Questionnaire in Brazilian Portuguese

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