Assessment of trends of nutritional status, central obesity, and growth profile using anthropometric measurements in adolescent athletes from a sport-oriented public school.

BACKGROUND: The aims were to evaluate the nutritional status, central adiposity, and physical growth profile of adolescents in a sports-oriented public school (SOPS) and to describe the results considering the Brazilian and American adolescents' survey studies. METHODS: This study was a dynamic cohort, performed in 2012-2013 and 2015. 1,082 adolescent athletes (11-16 years old) participated. Anthropometric data (height [H], weight, and waist circumference [WC]) were collected yearly. The nutritional status was assessed using BMI Z-score; trunk fat, using WC and WC/H ratio; and growth, using height z-score. The SOPS results were described considering data from the Brazilian Household Budget Survey (HBS-Southeast region) and the National Health and Nutrition Examination Survey (NHANES). Anthropometric data was compared using linear mixed effects regression models, considering sex, age group and time. RESULTS: Considering height Z-score and BMI Z-score values, none of the adolescents in the SOPS had short stature or underweight, and the obesity prevalence was approximately 1% throughout the study. HBS survey revealed 3.4% of obesity prevalence in adolescents (11-16 years old). Considering age and time, significant differences in WC for both sexes were observed. However, considering NHANES data, our participants were classified in P5-25. CONCLUSIONS: These results suggest that the nutritional status of adolescents in the SOPS was good, obesity prevalence was 1% and WC measurement was within P5-25 considering NHANES data. This supports the public policies encouraging involvement in sports at school, which should be one of the priorities in the health promotion agenda, reducing the development of future chronic diseases.

Study of globe temperature relative to air temperature during cognitive activities in information technology laboratories.

BACKGROUND: Considering that, environments with information and communication technology innovations, including educational institutions, are providing more interaction among individuals anywhere in the world and contributing to higher learning flexibility, it is necessary to pay extra attention to the radiation dissipated by technological equipment in these environments. OBJECTIVE: Investigate whether the behavior of the globe temperature (tg) in relation to the air temperature (ta) could affect the performance of students in information technology laboratories (ITLs). METHODS: The methodological procedures adopted consisted of the following analyses in six institutions: thermal variables - mean radiant temperature (trm) and (tg-ta); students' performance and architectural elements. RESULTS: ITL G was the ITL with the highest incidence of thermal radiation, thus a mathematical model was proposed for this sample to determine whether (tg - ta) and trm are related to overall student performance (Dt). For each increase of one degree in the difference between the globe temperature and the air temperature (tg-ta), the students' performance in the institution G decreased by approximately 29%. CONCLUSION: As well as productivity can be altered due to changes in air temperature in air-conditioned teaching environments, in this specific case, if tg> >ta, possibly the thermal radiation may interfere with the performance of the people present in the environment technological innovations of communication and information.