MARCUS VINICIUS NASCIMENTO FERREIRA
Projetos de Pesquisa
Unidades Organizacionais
LIM/39 - Laboratório de Processamento de Dados Biomédicos, Hospital das Clínicas, Faculdade de Medicina
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- Reliability and Validity of a Questionnaire for Physical Activity Assessment in South American Children and Adolescents: The SAYCARE Study(2018) NASCIMENTO-FERREIRA, Marcus Vinicius; MORAES, Augusto Cesar Ferreira De; TOAZZA-OLIVEIRA, Paulo Vinicius; FORJAZ, Claudia L. M.; ARISTIZABAL, Juan Carlos; SANTALIESRA-PASIAS, Alba M.; LEPERA, Candela; NASCIMENTO-JUNIOR, Walter Viana; SKAPINO, Estela; DELGADO, Carlos Alberto; MORENO, Luis Alberto; CARVALHO, Heraclito BarbosaObjectiveThe objective of this article is to test the reliability and validity of the new and innovative physical activity (PA) questionnaire. MethodsSubsamples from the South American Youth/Child Cardiovascular and Environment Study (SAYCARE) study were included to examine its reliability (children: n=161; adolescents: n=177) and validity (children: n=82; adolescents: n=60). The questionnaire consists of three dimensions of PA (leisure, active commuting, and school) performed during the last week. To assess its validity, the subjects wore accelerometers for at least 3 days and 8h/d (at least one weekend day). The reliability was analyzed by correlation coefficients. In addition, Bland-Altman analysis and a multilevel regression were applied to estimate the measurement bias, limits of agreement, and influence of contextual variables. ResultsIn children, the questionnaire showed consistent reliability (=0.56) and moderate validity (=0.46), and the contextual variable variance explained 43.0% with -22.9min/d bias. In adolescents, the reliability was higher (=0.76) and the validity was almost excellent (=0.88), with 66.7% of the variance explained by city level with 16.0min/d PA bias. ConclusionsThe SAYCARE PA questionnaire shows acceptable (in children) to strong (in adolescents) reliability and strong validity in the measurement of PA in the pediatric population from low- to middle-income countries.
conferenceObject PA ASSESSMENT IN CHILDREN AND ADOLESCENTS FROM SOUTH AMERICA: METHODOLOGICAL ASPECTS(2017) MORENO, Luis A.; MORAES, Augusto Cesar Ferreira De; FERREIRA, Marcus Vinicius Nascimento; TOAZZA-OLIVEIRA, Paulo Vinicius; FORJAZ, Claudia L. M.; ARISTIZABAL, Juan; SANTALIESTRA-PASIAS, Alba M.; LEPERA, Candela; NASCIMENTO JUNIOR, Walter Viana; SKAPINO, Estela; DELGADO, Carlos; CARVALHO, Barbosa Heraclito- Psychometric properties of 4-item questionnaire for sleep habits and time in a South American paediatric population(2021) NASCIMENTO-FERREIRA, Marcus Vinicius; MORAES, Augusto Cesar Ferreira de; MONSALVE-ALVAREZ, Julia Maria; TELLO, Florencia; ARAUJO-MOURA, Keisyanne; DELGADO, Carlos A.; BOVE, Maria Isabel; MORENO, Luis A.; CARVALHOL, HeraclitoObjectives: To assess the psychometric properties of 4-item questionnaire about sleep habits and time in South American children (3-10 years) and adolescents (11-18 years). Material and Methods: We evaluated 459 participants from seven South American cities. Two items from week and weekend days wake up time and bedtime were asked twice, with a 2-week interval. We calculated time spent in bed (subtracting wake up time from bedtime). Participants also answered the Healthy Lifestyle in Europe by Nutrition in Adolescence (HELENA) sleep time questionnaire. Results: The questionnaire showed acceptable temporal stability in children and adolescents on total days (rho >= 0.30; p<0.05). For total days, the questionnaire presented acceptable convergent validity only in children (rho from 0.48 to 0.62; p <= 0.01) compared with the HELENA questionnaire. Conclusion: The 4-item questionnaire is a reliable and valid tool for children; however, its validity is not consistent in adolescents for sleep habits and time.
- Individualised prognosis for risk of developing abdominal obesity in the paediatric population(2021) NASCIMENTO-FERREIRA, Marcus Vinicius; BERG, Gabriela; ZAPATA, Laura Ines Gonzalez; MORAES, Augusto Cesar Ferreira De; CARVALHO, Heraclito BarbosaAims: To develop and validate risk scores for predicting abdominal obesity in South American children and adolescents based on extrinsic and intrinsic variables. Methods: Children (n = 358) and adolescents (n = 369) from seven South American cities from the South American Youth Cardiovascular and Environmental (SAYCARE) Study. The primary outcome was abdominal obesity. Potential predictors were based on sociodemographic, maternal, environmental, and behavioural factors and nutritional status. In multilevel logistic models, associated variables were tested to build the scores, which were internally validated. Results: We identified 120 children and 98 adolescents who were abdominally obese. We found at least five variables associated with the outcome in children with unacceptable predictive capacity. However, in adolescents, we found that biological sex, age, maternal body mass index (BMI), active commuting by bike, soft drink consumption (for risk score A), and weight (for score B) can predict abdominal obesity. Both scores, A and B, showed acceptable performance in the ROC curve [areas under curve: 0.70 (95% CI: 0.56-0.82) and 0.95 (95% CI: 0.89-1.0 0), respectively]. Conclusion: The SAYCARE risk scores present accurate, individualised estimates for identifying adolescents who are at risk of developing abdominal obesity. However, these have not been externally validated.