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and vegetables, appeared to be more prevalent in those children who met the international screen-time guidelines.

Background evidence indicates a role of vitamin A in the regulation of fat mass influencing obesity and cardiovascular diseases. Material and methods a cross-sectional study in 200 women, paired by age and by the recommended dietary intake of vitamin A. Subjects were divided into four groups according to body mass index (BMI) 80 eutrophic (E), 40 overweight (OW), 40 class I obesity (OI) and 40 class II obesity (OII). Lipid and glycemic profiles were measured and oxidative stress was evaluated through serum concentrations of uric acid, glutathione peroxidase (GSH-Px), and thiobarbituric acid reactive substances (TBARS). Results the cutoff points for deficiency of serum retinol and β-carotene levels were < 1.05 µmol/L and 40 µg/dL, respectively. For the recommended dietary intake of vitamin A it was 700 µg/day. Retinol and β-carotene deficiency was found in the E group at 5 % and 15 %, respectively, reaching 77.5 % and 82.5 % in the OII group. Conclusions a correlation was observed between serum concentratof vitamin A is reached.

Introduction Nutrition Education (NE) has been identified as a key factor to prevent children obesity. Teachers and dietitians are the professionals in charge of transmitting this knowledge to children; however, it has been identified that they do not possess either proper training, or the proper tools to perform this activity. Objectives to evaluate the acceptability and usability of a NE Internet platform and its two "Serious Games" (SGs) among a sample of elementary school teachers, dietitians, and education students. In addition, to evaluate the efficacy of this platform to teach NE in a sample of children aged 9 to 12 years. Methods a total of 66 NE professionals and 135 children participated. Usability and acceptability questionnaires of the platform and an instrument to measure the acceptability, immersion, and playability of the SGs were administered to the professionals. mTOR inhibitor The children fulfilled a questionnaire on nutritional knowledge. Descriptive statistics analyzed the main responses of the profesed with a favorable opinion about the platform; however, the scores given by all professionals to the SGs ranged from low to moderate. Children increased their nutritional knowledge from pre to post evaluation (p less then 0.001). This increase was observed in 10-year-old children and in children with 11 to 12 years of age, but not in 9-year-olds. Conclusions this platform proved to be an effective tool to increase children's nutritional knowledge. Professionals expressed a medium level in terms of acceptability and usability for this platform, but also effectiveness in providing NE to children.

Introduction to combat the COVID-19 pandemic governments have adopted measures such as quarantine and social distancing. Objective the main objective of the present study was to analyze the impact of COVID-19 quarantine on body mass in combat sports athletes. Methods we conducted a cross-sectional, prospective, multi-center study that evaluated 234 men (mean age and standard deviation, 29 ± 10 years) residing in Argentina (n = 38); Bolivia (n = 1); Brazil (n = 105); Chile (n = 30); El Salvador (n = 1); Spain (n = 22); Mexico (n = 22) and Peru (n = 15). Of these, 12 practiced Brazilian jiu-jitsu (BJJ), 54 boxing, 67 judo, 13 karate, 52 kick boxing & muay thai (KB & MT), 9 mixed martial arts (MMA), and 27 taekwondo (TKD). An online survey was created using Google Forms. It was implemented between April 4th and April 17th, 2020. Athletes were consulted about their body mass before starting the quarantine and after 20 ± 5 days of quarantine. Results athletes in all combat sports were heavier during quarlted about their body mass before starting the quarantine and after 20 ± 5 days of quarantine. Results athletes in all combat sports were heavier during quarantine as compared to pre-quarantine (p less then 0.001, d = 0.12). Conclusions combat sports athletes experienced an increase in body mass during the COVID-19 quarantine.

Objective the rs10830963 SNP of the MTNR1B gene may be related with biochemical changes after weight loss induced by caloric restriction. We investigated the role of this SNP on biochemical parameters after biliopancreatic diversion (BPD) surgery in morbid obese subjects. Patients and methods one hundred and fifty-four patients with morbid obesity, without diabetes mellitus type 2, were enrolled. Their biochemical and anthropometric parameters were recorded before the procedure and after one, two, and three years of follow-up. All subjects were genotyped (rs10830963) at baseline. Results the decrease in fasting insulin levels seen after the first year (delta -3.9 ± 1.2 mIU/L vs. -1.8 ± 1.1 mIU/L; p = 0.03), the second year (delta -5.0 ± 0.3 mIU/L vs. -2.3 ± 0.2 mIU/L; p = 0.01) and the third year (delta -5.1 ± 1.9 mIU/L vs. -2.8 ± 1.1 mIU/L; p = 0.02) was higher in non-G-allele carriers than in G-allele carriers. Additionally, the improvement of HOMA-IR levels at year one (delta -0.7 ± 0.2 mIU/L vs. -0.2 ± ers than in G-allele carriers. Finally, basal glucose levels after the first year (delta -10.1 ± 2.4 mg/dL vs. -3.6 ± 1.8 mg/dL; p = 0.02), the second year (delta -16.0 ± 2.3 mg/dL vs. -8.4 ± 2.2 mg/dL; p = 0.01) and the third year (delta -17.4 ± 3.1 mg/dL vs. -8.8 ± 2.9 mg/dL; p = 0.03) were higher in non-G-allele carriers than in G-allele carriers, too. Improvements seen in comorbidities were similar in both genotype groups. Conclusion our study showed an association of the rs10830963 MTNR1B polymorphism after massive weight loss with lower glucose response, insulin resistance, and fasting insulin levels in G-allele carriers.

Introduction sarcopenia and cachexia are syndromes that result in a reduction of skeletal muscle mass, being associated with the aging process and many chronic diseases. Objective to assess the frequency of sarcopenia as well as of cachexia and their associated factors in patients in dialysis treatment. Methodology a cross-sectional study conducted in two dialysis treatment centers in Recife between March and September 2016. The diagnosis of sarcopenia was made according to the criteria issued by the Sarcopenia European Consensus, while that of cachexia was made in consonance with the Society for Cachexia and Wasting Disorders (SCWD). The association variables were demographic (age and sex), laboratory (C-reactive protein, serum albumin, hemoglobin, parathyroid hormone, serum creatinine), and anthropometric indicators (body mass index BMI, arm circumference AC, midarm muscular circumference MMC, triceps skinfold thickness TST). Results the study involved 66 patients, 43.9 % men, 56.1 % women, with a mean age of 53.