Características Antropométricas, Composición corporal y Somatotipo en Jugadores de Rugby Sevens

Introduction: The objective of this study was to analyze the anthropometric characteristics of body composition and somatotype in senior rugby seven players. The sample was 21 players (age 24.2 ± 5.1 years, weight 81.0 ±14.7 kg, height 175.5 ±4.8 cm) belonging to a departmental team. Methods: 22 anthropometric measurements were taken (two basic, eight skinfolds, three diameters and seven perimeters); Anthropometric characteristics, body composition, and somatotype were determined. A descriptive statistical analysis was performed in SPSS, and the normality of the data was checked using the Shapiro-Wilk test. Significance level p>0.05. Results: Among the results found are muscle mass 41.2 ± 5.4 kg, bone mass 11.4 ± 1.4 kg and fat percentage using the Faulkner formulas 13.9 ± 2.2%, Carter 10.4 ± 2.1% and Yuhazs 15.1 ± 3.1%. Regarding the somatotype reported, it is endomesomorphic. Conclusion: there is no defined profile regarding the muscle or fat component, nor a consensus on how to quantify these components.Introducción: El objetivo de este estudio fue analizar las características antropométricas de composición corporal y somatotipo en jugadores de rugby sevens categoría mayores. La muestra fue de 21 jugadores (edad 24.2 ± 5.1 años, peso de 81.0 ±14,7 kg, talla 175.5 ±4.8 cm) pertenecientes a una selección departamental. Métodos: Se tomaron 22 medidas antropométricas (dos básicas, ocho pliegues, tres diámetros y siete perímetros); se determinaron las características antropométricas, composición corporal y somatotipo. Se hizo un análisis estadístico descriptivo en SPSS, se comprobó la normalidad de los datos por medio de la prueba Shapiro-Wilk. Nivel de significancia p>0,05. Resultados: Dentro de los resultados hallados está la masa muscular 41.2 ± 5.4 kg, masa ósea 11.4 ± 1.4 kg y porcentaje de grasa mediante las fórmulas de Faulkner 13.9 ± 2.2 %, Carter 10.4 ± 2.1 % y Yuhasz 15.1 ± 3.1 %. En cuanto al somatotipo reportado es endomesomorfo. Conclusión: En conclusión, no existe un perfil definido frente al componente muscular o graso, ni tampoco un consenso de como cuantificar dichos componentes

Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality