Reliability and validity of the in an online format for university students from low-income regions in a pandemic context: A 24 hour MESYN study.

Objective: To test the reliability and validity of the (DEBQ) in an online format in university students from low-income regions.

Methods: We applied the questionnaire to a sample of 195 and 117 university students from a low-income region (Gini index of 0.56) to study validity and reliability, respectively.

Evaluation of the Validity of a Food Frequency Questionnaire and 24-Hour Dietary Recall to Assess Dietary Iron Intake in Children and Adolescents from the South American Youth/Child Cardiovascular and Environmental Study.

Background: A food frequency questionnaire (FFQ) for South American children and adolescents was developed, but its validity for assessing dietary iron intake has not been evaluated.

Objective: To evaluate the validity of the FFQ and 24-hour dietary recalls (24h-DR) for assessing dietary iron intake in children and adolescents.

Design: The South American Youth/Child Cardiovascular and Environmental study is a multicenter observational study, conducted in five South American cities: Buenos Aires (Argentina), Lima (Peru), Medellin (Colombia), Sao Paulo, and Teresina (Brazil).

Which blood cutoff value should be used for vitamin A deficiency in children aged 3-10 years? A systematic review.

Context: Blood cutoff values for vitamin A deficiency in children aged 3-10 years have not been addressed in the literature.

Objective: To identify blood retinol concentrations for determining severe vitamin A deficiency in children aged 3-10 years.

Data Sources: The MEDLINE, Web of Science, Embase, and Scopus databases were searched.

A posteriori dietary patterns and their association with systemic low-grade inflammation in adults: a systematic review and meta-analysis.

Context: A posteriori dietary patterns are promising ways of uncovering potential public health strategies for the prevention of systemic, low-grade, inflammation-related, chronic noncommunicable diseases.

Objective: To investigate and summarize the current evidence on the association between a posteriori dietary patterns and systemic, low-grade inflammation in adults.

Data Sources: MEDLINE, EMBASE, Web of Science, and LILACS were searched.

The Validity of Children's Fruit and Vegetable Intake Using Plasma Vitamins A, C, and E: The SAYCARE Study.

Despite that fruits and vegetables are key elements for health promotion, there are limited studies validating their intake in children. We aimed to validate the SAYCARE (South American Youth/Child Cardiovascular and Environmental) Study Food Frequency Questionnaire (FFQ) and the combination of the FFQ frequency of intake with the 24 h-dietary-recall (24 h-DR) (mean of 3 days), for children's fruit and vegetable intake. The reference methods were plasma dosages of β-carotene, retinol, ascorbic acid, and α-tocopherol, which were collected in the school environment.

Reliability and validity of body weight and body image perception in children and adolescents from the South American Youth/Child Cardiovascular and Environmental (SAYCARE) Study.

Objective: To assess the reliability and validity of body weight (BW) and body image (BI) perception reported by parents (in children) and by adolescents in a South American population.

Design: Cross-sectional study. BW perception was evaluated by the question, 'Do you think you/your child are/is: severely wasted, wasted, normal weight, overweight, obese?' BI perception was evaluated using the Gardner scale.

How do energy balance-related behaviors cluster in adolescents?

Objectives: To delineate the clustering of energy balance-related behaviors in adolescents and investigate whether these behaviors are associated with the household socioeconomic status and parental education level.

Methods: Two cross-sectional studies assessed information on sedentary behavior, physical activity, sugar-sweetened beverages and fruit and vegetable consumption, and sleep duration by self-reported questionnaires in adolescents (12.5-17.

Development of a Food Frequency Questionnaire for Assessing Dietary Intake in Children and Adolescents in South America.

Objective: This study aimed to describe the development of a food frequency questionnaire (FFQ) to assess dietary intake in South American children and adolescents.

Methods: A total of 345 children (aged 3-10 years) and 357 adolescents (aged 11-17 years) were included for analysis. The FFQ was designed to be self-administered and to assess dietary intake over the past 3 months.

Role of fruits and vegetables in adolescent cardiovascular health: a systematic review.

Context: Levels of fruit and vegetable consumption are low among adolescents, and the possible effect of this on cardiovascular health in this age group is undefined.

Objective: The aim of this systematic review was to investigate the potential role of fruit and vegetable consumption in adolescent cardiovascular health.

Data Sources: Six electronic databases (BioMed Central, MEDLINE, Web of Science, CINAHL, Scopus, PsycINFO) were searched from database inception to December 2015.

Cross-sectional, school-based study of 14-19 year olds showed that raised blood pressure was associated with obesity and abdominal obesity.

Aim: Gaining weight has been directly associated with an increased probability of developing high blood pressure (HBP) and metabolic abnormalities. We examined the independent and combined effects of overweight, obesity and abdominal obesity on blood pressure in adolescents.

Methods: This cross-sectional school-based study evaluated 869 adolescents (53.

Validity and reliability of sleep time questionnaires in children and adolescents: A systematic review and meta-analysis.

Sleep duration has been associated with several health outcomes in children and adolescents. As an extensive number of questionnaires are currently used to investigate sleep schedule or sleep time, we performed a systematic review of criterion validation of sleep time questionnaires for children and adolescents, considering accelerometers as the reference method. We found a strong correlation between questionnaires and accelerometers for weeknights and a moderate correlation for weekend nights.

The combined effect of physical activity and sedentary behaviors on a clustered cardio-metabolic risk score: The Helena study.

Background/objective: Increased physical activity (PA) and decreased sedentary behaviors (SBs) may have beneficial effects on cardio-metabolic risk in adolescents. The aim of this study was to examine the associations between independent/combined effects of PA and SB with individual/clustered cardio-metabolic risk factors.

Methods: A sample of 769 adolescents (12.

Obesity Prevention in Latin America.

In Latin American countries, obesity prevalence has increased significantly as a result of rapid urbanization and an improvement in socioeconomic conditions. We report the prevalence of overweight and/or obesity and prevention efforts in five countries: Mexico, Colombia, Brazil, Peru, and Chile. In children, the highest and lowest rates of obesity are found in Chile (23 % in 6-year-olds) and Peru (1.