Satisfaction of Body Image in Adolescents With Different Maturity Stages

Introduction: Adolescence is a period marked by intense body modifications that occur differently according to the maturational stage and sex, which can generate different body image perceptions.Objective: This study aims to compare and associate body image satisfaction in different maturational stages. Methods: Overall, 207 adolescents of both sexes aged 10-12 years were evaluated. Maturation was estimated through an equation predictive of skeletal age and for the body image evaluation, the scale of silhouettes was used. The statistical tests used were chi-square and logistic regression (odds ratio) with respective confidence intervals (95% CI).Results: There was a prevalence of body image dissatisfaction of 63.8% (p <0.001). In both sexes, subjects with accelerated maturation had greater body image dissatisfaction (girls p = 0.0, boys p = 0.04), and desire to reduce their silhouette scale (p <0.001). Subjects with accelerated maturation were 2.88 more likely (CI 95% 1.03 - 8.05) of having body image dissatisfaction when compared to normal maturation; however, when adjusting for body mass index, the association lost its significance. Conclusion: It could be concluded that body dissatisfaction perceived by young individuals is independent of sex, and there is an association between accelerated maturational stage 2.88 times higher than in the normal maturational stage in relation to body dissatisfaction, in which the body mass index appears to be the main predictor for body dissatisfaction

Maturational stages: comparison of growth and physical capacity indicators in adolescents

Introduction: The identification of physical capacity is an important marker related to healthy behavior during childhood and adolescence, in which some factors appear to contribute to motor performance such as maturation and hormonal levels. Objective: To compare growth indicators, physical capacity and hormonal markers according to gender and maturational stage in adolescents. Methods: Eighty-nine adolescents of both genders aged 10-13 years participated in the study. Sexual maturation was evaluated using the Tanner’s self-evaluation method. Physical capacity (explosive strength of upper and lower limbs, upper limb velocity and agility) and hormonal markers (testosterone and estradiol) were evaluated through the chemiluminescence method. Results: In the comparison by gender, girls had higher weight (p = 0.023), height (p = 0.018) and fat percentage values (p = 0.001), while boys presented better motor performance for the explosive strength of upper limbs (p = 0.005) and lower limbs (p = 0.011), agility (0.018) and upper limb velocity (p = 0.014). Regarding maturational stage, boys did not present differences in any variable analyzed; (Stage V versus I), height (stage III, IV and V versus I) and upper limb explosive strength (stage III and IV versus I). Conclusion: Growth, weight and height, as well as explosive strength of upper limbs were higher in girls at more advanced maturational stages and appear to be gender dependent

Utilização de diferentes métodos para a determinação da idade óssea em jovens

O estudo tem como objetivo correlacionar os resultados da idade óssea em meninos e meninas em diferentes métodos. Na metodologia para verificar a idade óssea, foram realizadas aferições de estatura, diâmetros de úmero e fêmur, perímetro corrigido de braço, dobra tricipital, idade cronológica para compor o modelo matemático, e raio-x de mão e punho para utilização do método de Grave e Brown (1976). No tratamento estatístico realizado no programa SPSS 20.0 utilizando estatística descritiva, correlação de Pearson e diferença significativa entre os métodos. As correlações obtiveram resultados positivos para meninos e meninas, respectivamente, com resultados entre raio x e idade cronológica (M=0,84/F=0,53), modelo matemático (M=0,85/F=0,56) e estatura (M=0,80/F=0,28), assim como entre o modelo matemático e estatura (M=0,95/ F=0,84) e idade cronológica (M=0,95/F=0,76). Concluímos, desta forma, existir correlação entre os métodos, não existindo diferença significativa entre os mesmos, destacando assim o modelo matemático por ser um método prático e de fácil aplicação para uso no meio esportivo

Relação entre o desempenho de sprint repetido e salto vertical intermitente de atletas de basquetebol

Resumo Objetivo: Verificar a relação da capacidade de sprints repetidos e salto vertical intermitente em atletas de basquetebol. Métodos: Foram avaliados 20 atletas adultos do sexo masculino (21,4 + 2,18 anos). Os atletas fizeram um teste de sprints repetidos (6x30metros) e de salto vertical intermitente (4x15 segundos). Resultados: Verificaram-se correlações negativas moderadas a forte entre o desempenho dos sprints com a altura do salto vertical (r= 0,459 a 0,612; p 20 metros), sugeriu que a aceleração no sprint pode ser considerada uma variável física com características específicas em relação à velocidade máxima de sprint e salto vertical