Perfil antropométrico, somatotipo y estado nutricional del taekwondoín mexicano / Anthropometric profile, somatotype and nutritional status of Mexican taekwondoin

RESUMEN: El perfil antropométrico y el somatotipo son herramientas imprescindibles para monitorizar el rendimiento morfológico del atleta de alto rendimiento. El objetivo del presente estudio es la descripción del perfil antropométrico y el somatotipo dominante de atletas mexicanos de taekwondo (TKD) de alto rendimiento. El perfil antropométrico y el somatotipo fueron determinados en 16 atletas de TKD mexicanos [8 hombres, edad media 21,5 años (19,8-23,0, IC 95%); 8 mujeres, edad media 21,9 años (19,2-24,4, IC 95%)]. Una prueba T-Student para muestras independiente fue usada para comparar las medias entre ambos sexos (Hombres vs Mujeres). La estatura (P = 0,001), los pliegues del muslo anterior (p = 0,006) y pantorrilla (p = 0,049), la circunferencia del brazo flexionado (p = 0,047), los diámetros del húmero (p = 0,011) y fémur (p = 0,012), el área total y área muscular del brazo (p = 0,001) fueron significativamente diferentes entre hombres y mujeres. Un somatotipo ecto-mesomórfico predomino tanto en hombres (2,1-3,2-4,2) como en el grupal (2,4-3,1-3,8), pero ectomorfo-mesomórfico (2,8-3,2-3,4) para las mujeres. El somatotipo del atleta de TKD mexicano predominó por una mayor linearidad relativa seguido de una magnitud musculoesquelética y una menor adiposidad relativa. Los hallazgos de este estudio aportan evidencias morfológicas para monitorizar el rendimiento físico y nutricional del atleta de TKD.

SUMMARY: Body composition, somatotype and nutritional status are essential tools for monitoring the perfor- mance of high-performance athlete. The objective of the present study was to verify the body composition, the dominant somatotype and nutritional status of high-performance taekwondo athletes of the Mexican TKD team. The anthropometric profile, somatotype and nutritional status were determined in sixteen Mexican TKD athletes [8 men, mean age 21.5 yrs. (19.8-23.0 95% CI); 8 women, mean age 21.9 yrs. (19.2-24.4 95% CI)]. An independent-samples t-test was used to compare the means between both genders (Men vs. Women). The height (p = 0.001), the anterior thigh (p = 0.006) and calf (p = 0.049) folds, the flexed arm circumference (p = 0.047), the humerus (p = 0.011) and femur (p = 0.012) diameters, the fat free mass (p = 0.020) and arm total area (p = 0.049) and arm muscle area (p = 0.001) were significantly different between men and women. The percentage of body fat and arm fat area were not significant between both genders. A normal caloric reserve, but a slightly high percentage of body fat was observed for both genders. In addition, normal and high protein reserves were identified for men and women, respectively. An ecto-mesomorphic somatotype was highlighted in both men (2.1-3.2-4.2) and in the group (2.4-3.1-3.8), but ectomorphic- mesomorphic (2.8-3.2-3.4) to women. The somatotype of the Mexican TKD athlete predominated by a greater relative linearity followed by a musculoskeletal magnitude and a lower relative adiposity. The findings of this study provide morphological evidence to monitor the physical and nutritional performance of the high-performance TKD athlete.

Assessing the Relationship between Autonomy Support and Student Group Cohesion across Ibero-American Countries.

Teacher-endorsed supporting behaviors present themselves as key influencers of student adaptive academic and social functions. The objective of this paper was twofold. First, this study sought to test a model in which student-perceived autonomy support was associated with group cohesion, considering the mediating role of basic psychological needs satisfaction and intrinsic motivation. Second, the current study examined the dimensionality of the model across five Western countries, namely Spain, Portugal, Brazil, Chile, and Mexico. A convenience sample of 3033 college students (Mage = 21.51 ± SD = 3.71) were recruited for the analysis. The results revealed that perceived autonomy support was positively associated with needs satisfaction, being consequently associated with intrinsic motivation and, ultimately, with group cohesion. Additionally, a multigroup analysis revealed that the model was invariant across college students from the different countries. The current results are discussed around the promotion of teacher uses of autonomy-supportive behaviors fostering adaptive outcomes in students regarding positive social relations and that the cultures of Ibero-American countries are equivalent in this process.