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June 20, 2006

Time Under Tension vs. Explosive lifts

Hi Rocco a quick question. I've been doing research on structual strength training and functional strength training.
In regards to structual strength there are many professional opinions that state time under tension training is more effective then ballistic exercises. The National Strength Training Association believes that time under tension recruits more muscle fibres as there is less outside forces involved so the muscles have to work harder with the increase in resistance. I am reading Supertraining by Mel Seff and it is his belief that explosive training is more benifical for structual strength as more neurons are fired to recruit more muscle fibres. In regards to hypertrophy training which would you believe is a more effective method.
Cheers Ian. From down under

Time under tension is always going to recruit more muscle fibers. Mel Seff is nuts. For hypertrophy’s sake, you need to recruit more muscle fibers to increase size. If you recruit only 10 muscle fibers, than only 10 can grow to be big and strong but if you recruit 100 than you increase the capacity to become even bigger and stronger. Now the only way that you can recruit more and more muscle fiber is by making damn sure that they are exhausted. The only way you can get that exhaustion is by beating the shit out of the muscle over time. So, with that said, do you think that doing quick and jerky movements will exhaust that muscle sufficiently to become big and strong? No one actually gets strong from those movements, they just get better at doing them by practicing them over and over and over again. It looks pretty cool but does not have anything to do with structural and functional strength. Keep up the good work. I’ll see you sometime down under. Hey just a quick question. Do you know many people that may want to understand weight training and exercise down in your neck of the woods. I wouldn’t mind bringing my askROCCO Live Seminars/shows to Australia.

Rocco

Posted by Rocco at June 20, 2006 01:55 PM

Comments

I do believe the gentleman asking the question did not fully understand what Mel Siff was saying about neural recruitment. Neural recruitment is required to HAVE the muscular contractions you perform at high-speed with shorter contraction times AND low-speed with longer contaction times (please see rate coding). Without the motor unit recruitment, the longer muscle contractions will not be able to take place either. Mel never stated that explosive training was more beneficial for structural strength than slower training to exhaustion, rather they are both necessary at various stages in training. He DOES however state that "the fundamental principle of strength training, then, is that all strength increase is INITIATED by neuromuscular stimulation. Earlier in his book, he also states "Physiology tells us that structure is determined by function, where muscle hypertrophy is initiated by neuromuscular stimulation. Although hypertrophy is the long-them result of a certain regime of neuromuscular stimulation, it is not the inevitable consequence of all types of work against resistance." The REAL KICKER HERE IS THIS STATEMENT: "In drawing upon this distinction, it should be noted that there is no such thing as purely structural training, since all training is essentially functional, which under certain conditions, may also ellicit structural changes. Moreover, THE PRODUCTION OF MAXIMAL STRENGTH DEPENDS TO A GREAT EXTENT OF AN OPTIMAL DEGREE OF MUSCLE HYPERTROPHY." Hypertrophy as part of speed and strength is due to the mechanical forces created by a muscle inside its fascial envelope. Without sufficient hypertrophy, intra-muscular coordination will not be optimal. This is just as important as how many muscle fibers are being recruited, since it relies on the NEURAL and MECHANICAL properties of force/strength production. When we look at what we do for specific sections of ANYONES trianing, we must have variation in regard to torque placed on joints, speed of contraction, time under tension, and plane of motion. As fitness professionals, athletes, soccer moms, and anyone who works out, we have to modify our workouts. The whole F-I-T-T principle was never more relevant. We must vary the muscular contraction spectrum to ellicit different responses and keep the body evolving. Any program that does not do this is most likely incomplete and not fully addressing the dynamic capabilities of the body. This means we are missing the results that we could get!

Posted by: Aaron Lakanen at July 1, 2006 11:41 AM

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