Abstract
The study aims to describe and compare two methods of energy intake assessment and one measure of energy expenditure applied in adolescents from a birth cohort. In a sub-sample of the 1993 Pelotas (Brazil) birth cohort, followed up in 2006-7, information on intake was obtained through a food-frequency questionnaire (FFQ) and three 24-hour-recalls (24hR), while energy expenditure was assessed using an accelerometer. Bland & Altman plots were used in the analyses in order to compare the methods. The mean difference between FFQ and 24hR was 592 ± 929cal/day. Compared to energy expenditure, intake was overestimated when measured by FFQ (357 ± 968cal/day) and underestimated by 24hR (-278 ± 714cal/day). In spite of the great differences between energy intake obtained using the two methods, lower differences were observed when these methods were compared to expenditure.
Translated title of the contribution | Dietary assessment in the 1993 Pelotas (Brazil) birth cohort study: Comparing energy intake with energy expenditure |
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Original language | Portuguese |
Pages (from-to) | 2080-2089 |
Number of pages | 10 |
Journal | Cadernos de Saude Publica |
Volume | 26 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2010 |
Externally published | Yes |
Keywords
- Adolescent nutrition
- Energy intake
- Energy metabolism
- Validation studies
ASJC Scopus subject areas
- Public Health, Environmental and Occupational Health