Author Topic: The reactive effect  (Read 6314 times)

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adarqui

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Re: The reactive effect
« Reply #15 on: April 04, 2011, 10:55:50 pm »
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isos? why isos?

reactive work.. rebounds (plyos/hops/bounds etc), jumps, sprints.

What about the diagram above (Muscle actions & energy contribution)?. Stating an isometric contraction leads to greater energy store in the tendons as opposed to concentric/eccentric contractions which store less?.

Do plyos/hops/bounds cut it optimally considering poor form would create conconcentric/eccentric contractions?. Or would they?.

I don't mind doing ISO's at all, as long it's doing my tendons good.

isometric training occurs in virtually every movement known to man.. picture a heavy barbell squat, a depth jump, etc.. eccentric -> isometric -> concentric.. if you want to train isometrically, increase intensity on the core lifts, core ballistic exercises, etc.. for example, going heavier on squat, adding more sets, etc.. A near-max single is considered quasi-isometric because of the speed at which it occurs, ie, any time you lift very heavy, bar speed decreases and the movement becomes a series of isometric contractions along the various "sticking points", this causes alot more pull on the tendons... For ballistics, raising box height on depth jumps, incorporating single leg bounding, etc.. if you want to improve tendon strength & structure, improve your ballistic-training volume & overall progression (rebounds & sprints), this means learning to bound, becoming proficient at DJ's/stiff leg pogos, etc.. every time you "impact", there will be a massive eccentric contraction which causes the tendon to elongate and store energy.. Stiff leg reactive work (stiff leg ankle hops/pogos) are insanely intense on the tendons.. if you are consistent with reactive work, you will definitely improve tendon strength & structure, and thus be more spring-like.. you don't need focused isometric work to achieve the gains you want.. that type of training is largely academic and has hardly had any success in the "real world".. if it was effective, you'd see more people utilizing it by now & the inno sport forum wouldn't have died.

if you're going to incorporate various types of isometric training, i'd make sure it is very much supplementary.. if you implement isos as your core training protocol, you will waste alot of time that could have been better spent improving your core {squat, lunge, calve raise, ghr, etc} lifts.

pC

LanceSTS

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Re: The reactive effect
« Reply #16 on: April 04, 2011, 11:00:35 pm »
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Thats a dead end road youre looking at going down man, trying to target tendons specifically with isos instead of training movements/muscles is a terrible idea and it never works out for anyone.  If youre getting stronger, training explosively, jumping, sprinting/doing reactive/plyo work, all that will take care of itself.  Trying to isolate tendons, especially with isos is not a good idea, it may sound good in theory, but in the real world, it just doesnt pan out.

Check this out. Thoughts on the %'s?.

Original Link: http://journals.lww.com/nsca-jscr/Abstract/2007/08000/Plyometric_Vs_Isometric_Training_Influences_on.55.aspx


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Plyometric Vs.Isometric Training Influences on Tendon Properties and Muscle Output.

Abstract.


The purpose of this study was to concurrently determine the effect that plyometric and isometric training has on tendon stiffness (K) and muscle output characteristics to compare any subsequent changes. Thirteen men trained the lower limbs either plyometrically or isometrically 2-3 times a week for a 6-week period. Medial gastrocnemius tendon stiffness was measured in vivo using ultrasonography during ramped isometric contractions before and after training. Mechanical output variables were measured using a force plate during concentric and isometric efforts. Significant (p < 0.05) training-induced increases in tendon K were seen for the plyometric (29.4%; 49.0 < 10.8 to 63.4 < 9.2 N[middle dot]mm-1) and isometric groups (61.6%; 43.9 < 2.5 to 71.0 < 7.4 N[middle dot]mm-1). Statistically similar increases in rate of force development and jump height were also seen for both training groups, with increases of 18.9 and 58.6% for the plyometric group and 16.7 and 64.3% for the isometric group, respectively. Jump height was found to be significantly correlated with tendon stiffness, such that stiffness could explain 21% of the variance in jump height. Plyometric training has been shown to place large stresses on the body, which can lead to a potential for injury, whereas explosive isometric training has been shown here to provide similar benefits to that of plyometric training with respect to the measured variables, but with reduced impact forces, and would therefore provide a useful adjunct for athletic training programs within a 6-week time frame.

(C) 2007 National Strength and Conditioning Association

Yea man, I have seen tons of studies on isos and tendon training, the problem is what actually works in theory and what happens in the real world.  If tendon training and stiffness were so important, why are the 100m sprinters faster than the 200 and 400m guys? One thing you have to remember about stiffness, JOINT stiffness is what matters, which is a combination of tendon stiffness AND MUSCULAR STIFFNESS.

  I know it sounds good looking at the studies to want to target tendons specifically with isos, and many people have gone down that path, most of them quit training after they lost most of their athletic ability or spun their wheels for years.  As far as the study pasted, what those athletes had been doing prior to the testing has to be taken into consideration, as well as what wouldve happened over a longer time frame.  Isos can have their place being a MINUTE part of a well structured plan, but focusing on training tendons and stiffness and spending most your time on them is going to put you on a one way street to nowhere.

  Go look at the extreme iso threads on here for a start, it sounds great when described by schroeder and adarqs pal colbert, but in reality its just a bunch of pseudo science pushed as a golden ticket to elite athleticism.  People dont want to believe that its hard to get fast, to jump high, they want to believe there is something magical out there that they arent doing, that they will stumble on and all of a sudden become elite.  Thats where the isos, arp, strength shoes, etc. etc. come in and mislead people, its what theyve been waiting to hear, but in reality, its nothing more than a good  activation/positional/flexibility exercise that will have a very minute strength effect IF the athlete is at a low level of strength.   Train movements, train explosively and progressively.  If you want to include isos thats perfectly fine and there is a place for them, but it should make up about 1% of your total program.
Relax.

$ick3nin.vend3tta

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Re: The reactive effect
« Reply #17 on: April 04, 2011, 11:09:43 pm »
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Elastic tendons let ostriches run faster using less calories.


Original Link: http://www.beginrunning.com/fitness/elastic-tendons-ostriches-run-faster-less-calories/#axzz1Dv93vREe


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Put some of these badboys in your forum banners.


« Last Edit: April 04, 2011, 11:12:49 pm by $ick3nin.vend3tta »