ABSTRACT Objective: This study aimed to verify the association between childhood anthropometric indicators and areal bone mineral density (aBMD) in adulthood. Methods: Repeated measures of 137 subjects (68 females) were obtained in childhood (9.2±1.5 years of age) and adulthood (22.3±1.7 years of age). aBMD (g/cm2) was assessed for whole body, lumbar spine, upper and lower limbs, and femoral neck in adulthood using dual-energy X-ray absorptiometry. Anthropometric measurements of body weight (BW), height, triceps and subscapular skinfolds were obtained in childhood. The anthropometric indicators used were BW, body mass index (BMI), and sum of skinfolds (ΣSF). Simple linear regression was used to assess the association between childhood anthropometric indicators and aBMD in adulthood, controlled by chronological age and stratified by sex, with 5% statistical significance. Results: In females, multiple associations were observed between anthropometric indicators and aBMD, with higher coefficients for BMI (β=0.020; R2=0.20; p<0.01 for right femoral neck to β=0.008; R2=0.16; p<0.01 for upper limbs), followed by BW (β=0.003; R2=0.21; p<0.01 for upper limbs to β=0.008; R2=0.20; p<0.01 for right femoral neck) and ΣSF (β=0.001; R2=0.06; p<0.01 for upper limbs to β=0.005; R2=0.12; p<0.01 for right femoral neck). In males, associations were observed only for the lumbar spine region (β=0.016; R2=0.09 for BMI to β=0.004; R2=0.06; p<0.01 for ΣSF). Conclusions: Anthropometric indicators of childhood proved to be sensitive predictors of aBMD in adulthood, especially in females. BMI indicated a greater association with aBMD in both sexes.

RESUMO Objetivo: O objetivo do estudo foi verificar a associação entre os indicadores antropométricos da infância com a área da densidade mineral óssea (aDMO) na idade adulta. Métodos: Medidas repetidas de 137 sujeitos (68 do sexo feminino) foram obtidos na infância (9,2±1,5 anos de idade) e idade adulta (22,3±1,7 anos de idade). A aDMO (g/cm2) foi avaliada para todo o corpo, coluna lombar, membros superiores e inferiores e colo do fêmur na idade adulta usando a absorciometria radiológica de dupla energia (DXA). Medidas antropométricas de peso corporal, estatura e dobras cutâneas das regiões tricipital e subescapular foram obtidas na infância. Os indicadores antropométricos utilizados para as análises foram o peso corporal (PC), o índice de massa corporal (IMC) e o somatório de dobras cutâneas (ΣDC). Regressão linear simples controlada pela idade e estratificada por sexo foi empregada para avaliar a associação entre os indicadores antropométricos do período da infância na aDMO na idade adulta, com significância estatística de 5%. Resultados: No sexo feminino, múltiplas associações foram observadas entre os indicadores antropométricos e a aDMO, com maiores coeficientes para IMC (β=0,020; R2=0,20; p<0.01 para colo do fêmur direito a β=0,008; R2=0,16; p<0,01 para membros superiores), seguido da PC (β=0,003; r2=0,21; p<0,01 para membros superiores a β=0,008; r2=0,20; p<0,01 para colo do fêmur direito) e ΣDC (β=0,001; R2=0,06; p<0,01 para membros superiores a β=0,005; R2=0,12; p<0,01 para colo do fêmur direito). No sexo masculino, associações ocorreram apenas na região da coluna (β=0,016; R2=0,09 para IMC a β=0,004; R2=0,06; p<0,01 para ΣDC). Conclusões: Indicadores antropométricos da infância mostraram ser sensíveis preditores da aDMO na idade adulta, especialmente no sexo feminino. O IMC indicou maior associação com a aDMO em ambos os sexos.

Currently, the overheating detection of electric system components is performed using thermal imaging devices, which depend on on-site regulation parameters, require skilled operators and suitable weather conditions. The development and application of innovative technologies to monitor hotspots has highlighted the use of sensors based on thermosensitive materials. In this study, a temperature sensor with thermochromic coating was developed. Thermochromic sensors covered with a varnish layer and nano-titanium oxide, in addition to thermochromic paint, were produced. A 23 experimental design was established to assess the performance of thermochromic sensors under artificial weathering conditions. Color measurements of the coatings were performed using the CIELAB method. Fourier-transform infrared (FTIR), UV-Vis (Ultraviolet-Visible), (thermogravimetric TGA, and Differential Scanning Calorimetry (DSC) analyses were performed on the sensors exposed to photodegradation to detect changes in the thermochromic coatings. The sensors exposed to thermodegradation, and salt spray weathering showed ΔE (total color difference) values below 1.50 points in the presence of TiO2. In comparison, the sensors exposed to photodegradation showed ΔE values above 10 points, and UV-Vis analysis revealed changes in the chemical structure of the coatings. These results demonstrate that the varnish layer and TiO2 can help minimize the degradation effects of temperature, light, and salinity.

Abstract Introduction The relationship between obesity and physical activity is still unknown in specific groups, such as people living with ostomies. Objective To assess the prevalence of obesity and the level of physical activity in ostomized individuals. Methods A cross-sectional study with a population of ostomized patients in two hospitals of a Brazilian city. Obesity was assessed by the Body Mass Index (BMI) and physical activity, by the International Physical Activity Questionnaire. Results The study included 148 patients (55.4% of men [82]), with a mean age of 58.5 (±17.8) years, with 56.1% (83) of the sample aged 60 or older. Colostomies were identified as definitive in 67.6% (100), there were 28 cases (18.9%) of obesity, 67 (45.3%) overweight patients, and 31 (20.9%) subjects were underweight. Sedentary lifestyle was identified in 40.5% (60) of the participants. The mean BMI was significantly higher in men (25.9 ± 5.1), and a higher proportion of men were overweight (28; 34.1%); the underweight group had a greater proportion of women (20; 30.3%). An association between physical inactivity and underweight (p = 0.003) was found. Conclusion Most patients with ostomies, especially colostomies, are men over 60 years of age who are overweight or obese. In general, underweight individuals are more sedentary.

Uma visão estigmatizada das pessoas com transtornos mentais está presente em parcelas significativas da sociedade, incluindo os profissionais de saúde, o que pode contribuir para uma baixa qualidade assistencial e dificuldade de acesso à saúde por parte dessa população. Diante desse problema, o artigo apresenta o relato de experiência curricular de uma escola médica privada, situada em uma capital do Sudeste brasileiro, de metodologia ativa, cujo cenário de prática ocorre inteiramente em uma Rede de Saúde Mental Comunitária do Sistema Único de Saúde – SUS. A avaliação dessa experiência concluiu que um modelo proposto contribuiu para a redução do estigma direcionada a portadores de transtornos mentais, além de ter sido avaliada positivamente pelos alunos. Para tanto, foi necessário a inclusão de estratégias educacionais que promovessem o convívio direto dos alunos com os portadores de transtornos mentais e o início do curso indicou ser um momento oportuno para oferecer esse tipo de atividade. A experiência também aponta que a colaboração eficaz entre a Universidade e o SUS pode promover mudanças positivas na formação em saúde mental de futuros médicos brasileiros.

Resumos Medical literature has shown that significant portions of the general population, including healthcare professionals, have a highly stigmatized view of mentally ill patients, which can lead to low quality health care and difficult access to treatment. To address this issue, we evaluated the mental health syllabus of a private medical school located in the capital city of a Southeastern Brazil State. That syllabus was conceived based on active educational methodology and in partnership with the local public mental health system, where all the practical academic activities took place. We conclude that the suggested model decreased stigmatization of the mentally ill among medical students and was positively evaluated by them. To achieve that goal, educational strategies had to be included that promote direct interaction of students with mentally ill patients and the beginning of medical school seems to be the right moment to offer this type of activity. This experience also showed that an efficient collaboration between the university and the Brazilian public health system may promote positive changes in mental health training of future Brazilian physicians.

La visión estigmatizada de las personas con trastornos mentales está presente en una parte significativa de la sociedad, incluyendo en los profesionales de salud, fenómeno que puede contribuir a una baja calidad asistencial y a la dificultad de acceso a la salud por parte de esa población. Ante esta problemática, el artículo presenta el relato de la experiencia curricular de una facultad privada de medicina, una facultad de metodología activa ubicada en una capital de la región sureste de Brasil, cuyo escenario de práctica ocurre en su totalidad en una Red Comunitaria de Salud Mental del Sistema Público de Salud. La evaluación de esta experiencia concluyó que un modelo propuesto contribuyó a la reducción del estigma dirigido a las personas con trastornos mentales, además de haber sido evaluado positivamente por los estudiantes. Para ello, fue necesario incluir estrategias educativas que promovieran el contacto directo entre los estudiantes y las personas con trastornos mentales, y el inicio del curso se mostró como el momento oportuno para ofrecer este tipo de actividad. La experiencia también señala que la colaboración efectiva entre la universidad y el sistema público de salud puede promover cambios positivos en la formación en salud mental de los futuros médicos brasileños.

Une grande partie de la société, y compris les professionnels de santé, stigmatise les porteurs de troubles mentaux. Cette attitude peut contribuer à diminuer la qualité de leur prise en charge et complique leur accès au système de santé. Dans ce contexte, cet article présente le cas d’une expérience de cursus au sein d’une faculté de médecine privée située dans une capitale de la région Sud-Est du Brésil. Il s’agit d’une méthodologie active dont les activités pratiques ont été réalisées au sein du Réseau de Santé Mentale Communautaire du Système Unique de Santé. L’évaluation de cette expérience a conclu que ce nouveau modèle proposé a contribué à diminuer la stigmatisation envers les porteurs de troubles mentaux. Les étudiants se sont également manifestés en faveur de cette approche. Pour mener à bien ce projet, il a été nécessaire de faire usage de stratégies éducationnelles qui ont permis de mettre en contact direct les étudiants et les porteurs de troubles mentaux. Le début du cours de médecine s’est avéré être le bon moment pour offrir ce type d’activités. Cette expérience a également démontré qu’une collaboration efficace entre l’Université et le Système Public de Santé peut donner lieu à des changements positifs dans le cadre de la formation en santé mentale des médecins brésiliens du futur.

RESUMO O uso da vinhaça como fertilizante no cultivo da cana-de-açúcar é uma boa opção para melhorar o desenvolvimento da cultura devido seu aporte nutricional, destinar adequadamente o subproduto e diminuir os custos de plantio; no entanto, no campo, o controle da quantidade de vinhaça aplicada pode ser difícil, interferindo no desenvolvimento da cana-de-açúcar. Com isso, objetivou-se neste estudo avaliar altas doses de vinhaça em relação às respostas biométricas no crescimento inicial da cana planta. Utilizou-se o delineamento inteiramente casualisado, com tratamentos compostos por cinco doses de vinhaça (0, 150, 300, 600 e 1200 m3 ha-1), com seis repetições, exceto D0 com três repetições, e uma dose de adubo mineral com 70 kg ha-1 de N, 120 kg ha-1 de P2O5 e 90 kg ha-1 de K2O, com três repetições. As variáveis biométricas foram avaliadas seguindo a sequência: número de perfilhos dos 60 aos 150 dias após plantio (DAP), altura de planta e número de folhas verdes e secas dos 90 aos 210 DAP, e diâmetro do colmo, área foliar e biomassa fresca e seca da raiz e parte aérea aos 210 DAP. A vinhaça aumentou a produção de biomassa através do número de perfilhos e do número de folhas em comparação ao adubo mineral, proporcionando maior crescimento até a dose 600 m3 ha-1. A dose de vinhaça de 1200 m3 ha-1 diminuiu a altura de planta.

ABSTRACT Rational use of vinasse as a fertilizer in sugarcane cultivation is a good option to increase crop development and yield due to its nutritional support, properly dispose of the by-product, and reduce costs of mineral nutrition. However, in the field, controlling the amount of vinasse can be difficult, interfering in sugarcane development. In this sense, this study aimed to evaluate high doses of vinasse related to biometric responses in the initial growth phase of sugarcane plants. The experimental design was completely randomized, and the treatments consisted of five vinasse doses (0, 150, 300, 600, and 1200 m3 ha-1), with six replicates, except D0, three replicates, and one dose of mineral fertilizer with 70 kg ha-1 of N, 120 kg ha-1 of P2O5 and 90 kg ha-1 of K2O, with three replications. The biometric variables were evaluated in the following sequence: number of tillers per pot from 60 to 150 days after planting (DAP), plant height, number of green and dry leaves from 90 to 210 DAP, stem diameter, leaf area, and fresh and dry biomasses of roots and shoots at 210 DAP. Vinasse increased the biomass production through the number of tillers and the number of leaves compared to mineral fertilizer, promoting greater growth up to the dose of 600 m3 ha-1. The vinasse dose of 1200 m3 ha-1 decreased the plant height.

ABSTRACT BACKGROUND: Overweight and obesity have reached epidemic prevalences. Obesity control involves many factors and needs to begin early in childhood. OBJECTIVES: To ascertain the association between tracked extracurricular sports practice and weight status; and to analyze tracking of overweight and obesity among school-aged children. DESIGN AND SETTING: Prospective cohort study conducted in 13 public schools in Cianorte, Paraná, in 2012-2016. METHODS: The sample comprised 2459 schoolchildren in Cianorte, of mean age 6.3 years at baseline and 9.4 years at follow-up. Body mass index was calculated from body mass and height measurements. The children were grouped as normal weight, overweight or obese. Information on extracurricular sports practice was collected through the dichotomous question “Do you participate in any extracurricular sports?” (“yes” or “no”). RESULTS: Tracking of weight status showed that 75.5% maintained this, with kappa of 0.530. Tracking of extracurricular sports practice showed that 80.9% maintained this, with low concordance (kappa of 0.054). Weight status correlation between baseline and follow-up showed that overweight or obese individuals were 4.65 times (CI: 4.05-5.34) more likely to maintain the same classification or move from overweight to obese at follow-up. Correlation of extracurricular sports practice with overweight or obesity at follow-up was not significant. CONCLUSIONS: These results demonstrated that overweight or obese children were at higher risk of gaining weight than were normal-weight children. In addition, the proportion of these children who maintained extracurricular sports practices over the years was low. Maintenance of this variable was not associated with weight status.

Abstract Aim: The aim was to compare performance in specific-skill tests and motor coordination between groups with different technical efficiency and verify possible variables related to specific skills and motor coordination that contribute to discriminate players into high- and low-technical efficiency. Methods: The sample consisted of 82 young soccer players (12-15 years). Body size, bone age, motor performance tests, soccer-specific skill tests, and frequency of technical actions in SSG were analyzed. Statistic cluster-derived ANOVA F was used to identify which variables related to technical action most contributed to classifying subjects with similar performance. Discriminant analysis (Stepwise Method) was used to verify which predictor variables discriminated players into groups of low- and high-frequency technical actions in SSG. Statistical significance was set at 5%. Results: The group of high technical efficiency presented better performance in motor tests, shuttle run (P = 0.04; ES = −0.55), jumping laterally (P = 0.02; ES = 0.58), kicking speed (P = 0.03; ES = 0.60), soccer-specific skill tests, leading the ball in a straight line (LBSL) (P = 0.01; ES = −0.75), and zig-zag ball control (ZZBC) (P = 0.04; ES = −0.55); variable leading the ball in a straight line correctly discriminated 60% of players into high- and low-frequency groups. Conclusion: The frequency of technical actions in SSG was poorly influenced by motor performance and specific skill tests, and only the LBSL test correctly classified players of different frequencies of technical actions in SSG.

Resumo A toxoplasmose está mundialmente distribuída e causa perdas na produção animal e problemas de saúde pública. Objetivou-se detectar Toxoplasma gondii e Sarcocystis spp. em 141 produtos cárneos de origem suína (49), bovina (48) e de quibe cru (44), comercializados em mercados de Botucatu, SP, Brazil. Realizou-se bioensaio das amostras em camundongos para isolamento do parasita, e detecção do DNA pela reação em cadeia pela polimerase, tendo como alvo a região do elemento repetitivo de 529 pares de bases (PCR-529-bp). Todas as amostras foram negativas ao bioensaio e 9 (6,38%) positivas à PCR, sendo 5/48 bovinas, 3/49 suínas e 1/44 quibe. Determinou-se a genotipagem das amostras positivas pela multiplex-, nested- e RFLP-PCR com 11 marcadores (SAG1, 5’-3’SAG2, alt.SAG2, SAG3, B-TUB, GRA6, L358, c22-8, c29-6, PK1, Apico). Obteve-se genótipo completo em uma amostra, semelhante a outros já identificados (MAS, TgCkBr89 e TgCkBr147). Nested- e RFLP-PCR do gene 18S rRNA das amostras positivas à PCR foram realizadas, e os produtos da nested-PCR, sequenciados e alinhados com dados do GenBank no NCBI. Quatro apresentaram 100% de homologia com T. gondii (L37415.1), duas Sarcocystis hominis (AF006471.1), duas Sarcocystis cruzi (AF176934.1), uma Sarcocystis hirsuta (AF006469.1), indicando a circulação de T. gondii e Sarcocystis spp.

Abstract Toxoplasmosis occurs worldwide causing economic losses to the animal production and problems to the public health. The study aimed to detect Toxoplasma gondii and Sarcocystis spp.in 141 meat products from commercial meat cuts of pork, beef, and kibbeh sold in commercial markets from Botucatu, SP, Brazil. Samples were bioassayed in mice to isolate the parasite, and the parasite DNA detected by PCR targeting the 529 base pairs repeat element region (PCR-529-bp). All samples resulted negative on bioassay, whereas PCR positive for 9 (6,38%), distributed as 5/48 beef, 3/49 pork, and 1/44 kibbeh. PCR-positive were investigated for the the parasite genotype using multiplex-, nested-, and RFLP-PCR for 11 markers (SAG1, 5’-3’SAG2, alt.SAG2, SAG3, B-TUB, GRA6, L358, c22-8, c29-6, PK1, Apico). Complete genotype was determined on just one PCR-positive sample that matched MAS, TgCkBr89 and TgCkBr147 isolates already identified. In addition, nested- and RFLP-PCR targeting 18S rRNA was run for all PCR-positive samples and, the products, sequenced and aligned to the GenBank at NCBI website. Four samples showed 100% homology with T. gondii (GenBank #L37415.1), three with Sarcocystis hominis (GenBank #AF006471.1), two Sarcocystis cruzi (GenBank #AF176934.1), and one Sarcocystis hirsuta (GenBank #AF006469.1), indicating the circulation of T. gondii and Sarcocystis spp.

Resumo: O artigo objetivou averiguar as contribuições da extensão universitária na formação profissional e na promoção da saúde. Tratou-se de um estudo de revisão, com consulta às bases de dados LILACS, MEDLINE e Scielo em junho de 2019. Conforme critérios de elegibilidade, foram selecionados 18 artigos. Após síntese, os dados foram dispostos em tabelas e quadros. A abordagem metodológica mais utilizada foi a descritiva-qualitativa com enfoque no trabalho multidisciplinar, formação acadêmica e interação academia-comunidade. A extensão foi compreendida como estratégia para promover saúde e uma ferramenta factível para o desenvolvimento profissional. Considerou-se, todavia, necessário maior incentivo para seu fortalecimento e efetivação social.

Abstract: The aim of the article was to investigate the contributions of University Extension Programs in vocational training and health promotion. This was a review study, consulting the LILACS, MEDLINE and Scielo databases in June 2019. According to eligibility criteria, 18 articles were selected. After synthesis, the data were arranged in tables and charts. The descriptive-qualitative approach was the most used methodological approach with focus on multidisciplinary work, academic education and community-academy interaction. University extension was understood as a strategy to promote health and a feasible tool for professional development. However, it was considered necessary a greater incentive for its strengthening and social fulfillment.

RESUMO O objetivo do presente estudo foi avaliar o efeito relativo da idade (ERI) nas seleções Brasileira de handebol que competiram nos campeonatos mundiais das categorias Sub-19, Sub-21 e Adulta. A amostra foi composta por 160 jogadores de handebol do sexo masculino, sendo 47 pertencentes a categoria Sub-19, 48 a Sub-21 e 65 a Adulta. A idade cronológica, massa corporal, estatura e posição de jogo de cada atleta foram obtidas no site oficial da Federação Internacional de Handebol. O nível de significância adotado foi de 5%. ERI foi observado em todas as três seguintes categorias Sub-19 (X2=21.511, P<0.01), Sub-21 (X2=15.894, P=0.01) e adulta (X2=35.123, P<0.01). Além disso, não foi encontrado ERI no processo de re-seleção pela categoria sequencial (P= 0.63, Sub-19 para Sub-21; P=0.46, Sub-21 para Adulta). O ERI foi encontrado nas seleções brasileiras de handebol. Contudo, este efeito não foi encontrado no processo de re-seleção, assim, os jogadores sofrem grande influência do ERI na categoria Sub-19 e isto permanece durante as categorias subsequentes até a equipe adulta.

ABSTRACT The aim of this study was to evaluate the relative age effect (RAE) in Brazilian male handball teams who competed in the world championships in the U-19, U-21, and adult categories. The sample was composed by 160 male handball players, 47 players being on U-19 category, 48 on U-21, and 65 on Adult category. The chronological age, body mass, height, and game position of each athlete were obtained on the International Federation of Handball website. The adopted significance level was of 5%. RAE was observed in all the three following categories U-19 (X2=21.511, P<0.01), U-21 (X2=15.894, P=0.01) and Adults (X2=35.123, P<0.01). Moreover, no RAE was found in re-selection process by sequential category (P= 0.63, U-19 to U-21; P= 0.46, U-21 to Adult). The RAE is found in Brazilian male handball national teams. However, this effect was not found in re-selection process, thus, players have great influence of RAE in U-19 and this remains through subsequent categories.

Resumo O presente artigo apresenta um ensaio teórico, motivado pelo desejo de conhecer que elementos e ações podem ser considerados em um trabalho que se propõe a discutir a identidade profissional (IP) de professores que ensinam matemática (PEM). Os resultados apresentados são fruto de estudos realizados nos últimos anos com o objetivo de contribuir para a construção de uma proposta, não prescritiva, pautada no modelo quadripolar de investigação e em uma caracterização de IP, que podem ser considerados em futuras investigações a respeito da IP de PEM. Espera-se, assim, que este trabalho possa oferecer subsídios para reflexão aos interessados na temática da IP de PEM, dispostos a ampliar o debate a respeito desse campo investigativo.

Abstract This article presents a theoretical essay motivated by the desire to learn which elements and actions can be considered in a research work that intends to discuss the professional identity (PI) in educators who teach mathematics. The results are the product of studies performed in recent years, which aimed at helping with the making of a non-prescriptive proposal based on the quadripolar model of investigation and on a characterization of the PI, which can considered in future investigations on the PI in educators who teach mathematics. Thus, we hope that this study can offer subsidies to those interested in the PI in educators who teach mathematics and who are willing to expand discussions on this research field.

RESUMO O objetivo foi verificar a relação entre a orientação esportiva e a idade esquelética em atletas de futebol de 12 a 15 anos. A amostra foi de 106 jovens futebolistas, do sexo masculino, e foram feitas medidas do tamanho corporal, idade esquelética e para avaliação do comportamento competitivo usou-se o Sport Orientation Questionnaire com as subescalas competir (TQ1), vencer (TQ2) e estabelecer metas (TQ3). A Ancova não verificou diferença significativa entre os diferentes grupos de maturidade (p> 0,05) com a orientação esportiva, já a correlação de Spearman observou uma relação negativa apenas no grupo de maturidade “no tempo”, com o TQ2 (r=-0,28). Conclui-se que a maturação esquelética apresentou fraca relação com o comportamento dos jovens atletas de futebol.

ABSTRACT The objective was to verify the relationship between sportsmanship and skeletal age in soccer players aged 12 to 15 years. The sample was of 106 young male soccer players, and measurements of body size, skeletal age and competitive behavior were used. The Sport Orientation Questionnaire was used with the sub scales to compete (TQ1), to win (TQ2) and to establish goals (TQ3). The ANCOVA did not find a significant difference between the different maturity groups (P> 0.05) with the sports orientation, whereas the Spearman correlation observed a negative relation only in the maturity group “in time”, with TQ2 (r=- 0.28). It was concluded that the skeletal maturation presented a weak relation with the behavior of the young soccer athletes.

RESUMEN El objetivo fue comprobar la relación entre la orientación deportiva y la edad esquelética en futbolistas de 12 a 15 años. La muestra estaba compuesta por 106 jóvenes futbolistas de sexo masculino y se tomaron medidas del tamaño corporal y la edad esquelética, y para la evaluación del comportamiento competitivo se utilizó el Sport Orientation Questionnaire con las subescalas competir (TQ1), ganar (TQ2) y establecer metas (TQ3). El ANCOVA no verificó ninguna diferencia considerable entre los diferentes grupos de madurez (p> 0,05) respecto a la orientación deportiva, mientras que la correlación de Spearman observó una relación negativa solo en el grupo de madurez «en el tiempo» con el TQ2 (r=-0,28). Se concluye que la maduración esquelética presentó una débil relación con el comportamiento de los jóvenes futbolistas.