Juancar
AdMiNiStRaToR III
Y si no puede escribir por que sus enormes brazos lo impiden?
Exacto. Eso era lo que me impedia escribir en este subforo.
Lo que no entiendo es porque en otros hilos si podia postear.
¿¿¿¿¿??????
__meparto_
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Y si no puede escribir por que sus enormes brazos lo impiden?
Es que hay una cosa que es básica. Cuando uno hace ejercicio con pesas la síntesis de proteína se inhibe entre 2-4 horas (o sea durante ese tiempo no hay crecimiento). Si uno entrena un músculo cada media hora incluso cada dos horas la síntesis siempre permanece inhibida. El único entrenamiento que vale es el que haces al final del día que es el que finalmente dispara el crecimiento. Los otros no sirvieron para nada.
Desde mi punto de vista ese razonamiento es tan logico como decir:
"La unica serie que vale es la ultima que haces antes de irte del gym, las otras no sirvieron de nada", o no, aun mejor "La unica repeticion que vale es la ultima de la ultima serie antes de irte del gym"
No digo que el entreno este sea util, solo que el razonamiento empleado para tacharlo de inutil no es valido (desde mi punto de vista)
Lo que pasa es que tenes que leer un poco de fisiología nadie dice que la última serie sea la que valga _mmmmm_. Pero cualquiera que haya leído un poco de fisiología sabe que después de cada entrenamiento la síntesis de proteína se inhibe durante 2-4 horas y después recién arranca el crecimiento. Puedo postear al menos 4 estudios sobre duración de la síntesis de proteínas post ejercicio.
Lo que pasa es que tenes que leer un poco de fisiología nadie dice que la última serie sea la que valga _mmmmm_. Pero cualquiera que haya leído un poco de fisiología sabe que después de cada entrenamiento la síntesis de proteína se inhibe durante 2-4 horas y después recién arranca el crecimiento. Puedo postear al menos 4 estudios sobre duración de la síntesis de proteínas post ejercicio.
Pues te agradecería que lo hicieras, porque me interesa el tema.
MaX_87, lo que yo entiendo que quiere decir Seba_ con "la última sesión es la única que sirve" es que se empieza a "crecer" (ya sé que no es eso exactamente, pero así se entiende mejor) a partir de las 2-4 horas de haber hecho el entrenamiento. Si cada media hora vuelves a hacer ejercicio, nunca se aprovechará el entrenamiento realizado, porque no habrá habido suficiente tiempo para que se empezara a recuperar el músculo. Pero vamos, es lo que entiendo yo. Con los mencionados estudios podría verlo un poco más claro.
Saludos.
Yo creo que el principio de supercompensacion se produce dependiendo del estimulo, no es posible decir que despues de toda la mañana haciendo series la supercompensacion sea la misma que la ultima sesion (3 series de bicep y 3 de tricep)
Pero bueno... Tampoco creo que sea milagroso el entreno ni mucho menos
O sea que si por ejemplo yo hago un dia:
7:00 4 series de press de banca
11:00 4 series de dominadas
15:00 4 series de sentadillas
19:00 4 series de curl bicep
23:00 4 series de press frances
Eso 4 veces por semana, pon que un dia hago dominadas y el otro dia hago remo con barra (para ir alternando)
Pongo este esquema porque es muy simple, pero tambien podria ir variando ejercicios y tal...
¿Me estas diciendo que con ese entreno como estas todo el dia inhibido solo sirven las series de press frances? A mi es que me parece surrealista pensar eso... Pero bueno, cada uno tendra su opinion, yo opino que es lo mismo hacer eso que hacer todo el entreno seguido, o incluso mejor asi, porque llegas mas descansado a cada ejercicio y rindes mas
Pues te agradecería que lo hicieras, porque me interesa el tema.
MaX_87, lo que yo entiendo que quiere decir Seba_ con "la última sesión es la única que sirve" es que se empieza a "crecer" (ya sé que no es eso exactamente, pero así se entiende mejor) a partir de las 2-4 horas de haber hecho el entrenamiento. Si cada media hora vuelves a hacer ejercicio, nunca se aprovechará el entrenamiento realizado, porque no habrá habido suficiente tiempo para que se empezara a recuperar el músculo. Pero vamos, es lo que entiendo yo. Con los mencionados estudios podría verlo un poco más claro.
Saludos.
AMPKα2 Activity, Acidosis, and Protein Synthesis in Human
Skeletal Muscle Following Resistance Exercise
Hans C. Dreyer, Satoshi Fujita, Jerson G. Cadenas, Elena Volpi,
Blake B. Rasmussen. University of Texas Medical Branch,
Galveston, TX. (Sponsor: Elizabeth J. Protas, FACSM)
Email: hcdreyer@utmb.edu
Resistance exercise is a potent stimulator of muscle protein synthesis. The increase in muscle protein synthesis following resistance exercise is usually detected within 3 hours and remains elevated for up to 48 hours. However, during and immediately after exercise muscle protein synthesis is inhibited. Skeletal muscle AMP-activated protein kinase (AMPKα2) and acidosis have recently been identified as inhibitors of muscle protein synthesis.
PURPOSe: To determine if muscle AMPKα2 activity and/or acidosis would be elevated in conditions associated with reduced protein synthesis (i.e., during and immediately post resistance exercise).
MeTHOdS: We studied 8 young subjects before, during, and for 2 hours following a bout of resistance exercise (Leg Extensions: 10 sets X 10 repetitions, 70% 1RM). Muscle biopsies were collected from the vastus lateralis before, immediately post exercise, and at 1hr and 2 hr post exercise. We utilized immunoprecipitation methods to measure muscle AMPKα2 activity. Mixed muscle fractional protein synthetic rate (FSR) was measured using stable isotope techniques.
ReSUlTS: Muscle AMPK α2 activity (pmol•g-1•min-1) at baseline was 243 ± 15, increased immediately post exercise (298 ± 23), and remained elevated at 1hr (317 ± 30) and 2hr (321 ± 32) hours post exercise (P < 0.05). Preliminary data on muscle protein synthesis (n=3) indicate that muscle FSR was not significantly different from baseline following resistance exercise (P > 0.05). Femoral vein lactate increased
14-fold (0.8 ± 0.1 to 11 ± 0.8 mM) during the resistance exercise bout. The average blood lactate during the first hour post exercise remained 3-fold higher (P < 0.05) and then returned to baseline values during the second hour postexercise. Femoral vein pH decreased significantly during exercise (7.37 ± 0.01 to 7.17 ± 0.01, P < 0.05) and returned to baseline values during the next two hours.
CONClUSiONS: The attenuation of muscle protein synthesis during and
immediately after resistance exercise was associated with both increased AMPKα2 activity and acidosis. Further research is required to determine the specific roles of AMPK and acidosis in inhibiting muscle protein synthesis.
Resistance exercise increases AMPK activity and reduces 4E-BP1 phosphorylation and protein synthesis in human skeletal muscle.
Dreyer HC, Fujita S, Cadenas JG, Chinkes DL, Volpi E, Rasmussen BB.
University of Texas Medical Branch.
Resistance exercise is a potent stimulator of muscle protein synthesis and
muscle cell growth with the increase in protein synthesis being detected within 2-3 hours post-exercise and remaining elevated for up to 48 hours. However, during exercise muscle protein synthesis is inhibited. An increase in AMP-activated protein kinase (AMPK) activity has recently been shown to decrease mammalian target of rapamycin (mTOR) signalling to key regulators of translation initiation.
We hypothesized that the cellular mechanism for the inhibition of
muscle protein synthesis during an acute bout of resistance exercise in humans would be associated with an activation of AMPK and an inhibition of downstream components of the mTOR pathway (4E-BP1 and S6K1).
We studied 11 subjects (7 men, 4 women) before, during, and for two hours following a bout of resistance exercise. Muscle biopsies were collected at each time point from the vastus lateralis. We utilized immunoprecipitation and immunoblotting methods to measure muscle AMPKa2 activity, mTOR associated upstream and downstream signalling proteins, and stable isotope techniques to measure muscle fractional protein synthetic rate (FSR).
AMPKa2 activity (pmol*min-1*mg of protein-1) at baseline was 1.7 +/- 0.3, increased immediately post-exercise (3.0 +/- 0.6), and remained elevated at 1h post-exercise (P< 0.05). Muscle FSR decreased during exercise and was significantly increased at 1h and 2h post-exercise (P<0.05). 4E-BP1 phosphorylation at Thr37/46 was significantly reduced immediately post-exercise (P<0.05). We conclude that AMPK activation and a reduced phosphorylation of 4E-BP1 may contribute to the inhibition of muscle protein synthesis during resistance exercise. However, by 1-2h post-exercise muscle protein synthesis increased in association with an activation of PKB, mTOR, S6K1, and eEF2.
The time course for elevated muscle protein synthesis following heavy resistance exercise.
MacDougall JD, Gibala MJ, Tarnopolsky MA, MacDonald JR, Interisano SA, Yarasheski KE.
Department of Kinesiology, McMaster University, Hamilton, Ontario.
It has been shown that muscle protein synthetic rate (MPS) is elevated in humans by 50% at 4 hrs following a bout of heavy resistance training, and by 109% at 24 hrs following training. This study further examined the time course for elevated muscle protein synthesis by examining its rate at 36 hrs following a training session. Six healthy young men performed 12 sets of 6- to 12-RM elbow flexion exercises with one arm while the opposite arm served as a control. MPS was calculated from the in vivo rate of incorporation of L-[1,2-13C2] leucine into biceps brachii of both arms using the primed constant infusion technique over 11 hrs. At an average time of 36 hrs postexercise, MPS in the exercised arm had returned to within 14% of the control arm value, the difference being nonsignificant. It is concluded that following a bout of heavy resistance training, MPS increases rapidly, is more than double at 24 hrs, and thereafter declines rapidly so that at 36 hrs it has almost returned to baseline.
para hombros es buelo el entreno de oxido.