Determinación de los efectos combinados de tres semanas de consumo del suplemento HMB y una sesión de ejercicio de fuerza excéntrico extremo sobre las tasas de expresión de los genes MyoG y CD56 en células satélite

  • Elias Kowsari Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
  • Alireza Asgari Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, IranAerospace Medicine Research Center, Aja University of Medical Sciences, Tehran, Iran
  • Hossein Shirvani Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
  • Behzad Bazgir Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
  • Mostafa Rahimi Department of physical education and Sport sciences, Faculty of Humanities, Shahrekord University, Shahrekord, Iran
Palabras clave: Ejercicio de resistencia excéntrico, Butirato de beta-hidroxi beta metilo, Células satélite

Resumen

El objetivo del presente estudio fue determinar los efectos combinados del consumo de suplementos de HMB-FA y una sesión de entrenamiento de resistencia extrema en la tasa de activación de células satélite de ratas macho maduras. Para ello, una vez realizados los estudios preliminares, ochenta ratas macho Sprague Dowley (grupo control: 18 ratas; grupo HMB: 19 ratas; grupo ejercicio: 19 ratas; grupo ejercicio + HMB: 19 ratas) con ocho semanas y peso de Se seleccionaron 200 ± 20 gramos para el estudio. Después del curso de familiarización con las escaleras, se inició la ingesta diaria de suplementos y se mantuvo durante tres semanas. Una vez que las ratas se familiarizaron con la escalera y recibieron el suplemento durante tres semanas, se administró una sesión de entrenamiento de resistencia. El protocolo de entrenamiento incluía descender una escalera con una inclinación del 80 % mientras se sujetaba un peso de 1RM del 100-110 % a las colas de las ratas. Los resultados de la extracción de ARN y la inmunohistoquímica mostraron que las tres intervenciones experimentales dieron como resultado un aumento en la expresión de los genes MyoG y CD56 en el tríceps. El punto importante, sin embargo, fue que la intervención más efectiva fue la intervención de ejercicio + HMB. Las cantidades de genes CD56 y MyoG aumentaron de forma estadísticamente significativa en los grupos HMB, Ejercicio y Ejercicio + HMB (p = 0,001). Según los resultados obtenidos, el consumo de suplemento de HMB en combinación con la realización de ejercicios excéntricos puede desempeñar un papel eficaz en la activación, proliferación, propagación y diferenciación de las células satélite. De hecho, los atletas y el personal militar que en algunos momentos realizan una actividad física extenuante y usan un entrenamiento preparatorio extremo para maximizar su preparación física pueden usar el suplemento HMB simultáneamente con su entrenamiento y obtener resultados aún más eficientes.

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Publicado
2019-01-25
Cómo citar
Kowsari, E., Asgari, A., Shirvani, H., Bazgir, B., & Rahimi, M. (2019). Determinación de los efectos combinados de tres semanas de consumo del suplemento HMB y una sesión de ejercicio de fuerza excéntrico extremo sobre las tasas de expresión de los genes MyoG y CD56 en células satélite. RBNE - Revista Brasileña De Nutrición Deportiva, 13(77), 94-105. Recuperado a partir de https://www.rbne.com.br/index.php/rbne/article/view/1261
Sección
Artículos Científicos - Original