Author Topic: Kadour Ziani's Legs  (Read 29341 times)

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Dreyth

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Re: Kadour Ziani's Legs
« Reply #30 on: April 09, 2012, 10:22:36 pm »
+3
Strength training has NOT been shown over and  over again to increase vertical jump.


It's when you write things like this at the BEGINNING of your post that I decide to just ignore whatever you have to say man.

Many people on this board, including me, are a living testament to how strength training increases vertical jump. When I was 155lbs in high school I couldn't touch rim. Some years later and I threw down a two handed dunk at 210lbs bodyweight my friend.

Don't tell me it was the tendons.
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Harvey

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Re: Kadour Ziani's Legs
« Reply #31 on: April 10, 2012, 01:27:34 am »
-5
Strength training has NOT been shown over and  over again to increase vertical jump.


It's when you write things like this at the BEGINNING of your post that I decide to just ignore whatever you have to say man.

Many people on this board, including me, are a living testament to how strength training increases vertical jump. When I was 155lbs in high school I couldn't touch rim. Some years later and I threw down a two handed dunk at 210lbs bodyweight my friend.

Don't tell me it was the tendons.

He said that it isn't the ONLY way in which people get up. Stop assuming that because it works for you everyone else has to train that way to be successful. In Ziani's case, his force exertion isn't based upon strength.
April 10, 2012, 01:27:34 am - Hidden. Show this post.
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nba8340

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Re: Kadour Ziani's Legs
« Reply #32 on: April 10, 2012, 01:49:31 am »
0
way too much argument and chatter over this

download and read joel smith's mechanics and development of single leg jumping and it will explain it all

http://www.just-fly-sports.com/

TheSituation

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Re: Kadour Ziani's Legs
« Reply #33 on: April 10, 2012, 10:46:59 am »
+1
As I continue to say in every thread it seems

Weight Room Numbers =/= Strength

So many variables to being a good lifter besides strength. Squatting (Powerlifting) is a fucking sport, yet we're using it as the only measurement of strength? Ridiculous


And before anyone misinterprets what I'm saying, the best way to get stronger is to squat. If you get relatively stronger you're going to jump higher. Anyone who has ever gotten stronger (not Avishek or Harvey, who are weak as shit) will tell you that. Both are weak, both can't jump for shit.

It's ironic that Avishek says that stretching increases strength so that "proves his point" when before he said strength doesn't mean anything because Ziani isn't strong.



He said that it isn't the ONLY way in which people get up. Stop assuming that because it works for you everyone else has to train that way to be successful. In Ziani's case, his force exertion isn't based upon strength.

Where did he say ONLY? He said strength training doesn't increase vertical jump.

So funny the two weakest people who have had 0 results and have failed training are telling people who have gotten results what works.
« Last Edit: April 10, 2012, 10:54:33 am by TheSituation »
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Dreyth

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Re: Kadour Ziani's Legs
« Reply #34 on: April 10, 2012, 11:38:27 am »
0
Stop assuming that because it works for you everyone else has to train that way to be successful.

Oh? I assumed that?
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steven-miller

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Re: Kadour Ziani's Legs
« Reply #35 on: April 10, 2012, 12:04:48 pm »
+2
Avishek regarding strength training:
Quote
It does work, but some athletes have other means of jumping higher. As long as they exist, we know that there are other mechanisms besides higher force production as a result of force training such as squatting and deadlifting that increase explosiveness and vertical jump.

Several problems with this. Just because there are characteristics that correlate with VJ besides force production DOES NOT TELL US that trying to improve those characteristics is an effective or efficient approach to train for VJ. I and everyone else here is aware that different factors than strength may be causally linked to the height of a VJ. But no matter how strong such a connection is, it might not have any implications for practical training purposes if there is no good way of improving those characteristics. For example, lets say leg length is strongly causally linked to VJ height. Would you then say that training for leg length is the best way to train for a higher vertical? I would not.

Take away message is that there are numerous factors that determine VJ height. Some of them are effectively trainable, some are trainable and some are not trainable. Strength and power in the weight room are two effectively trainable parameters that have been shown over and over again to lead to higher verticals. There might be other training methodologies that work well. However, I have rarely seen a good documentation of a meaningful VJ increase through flexibility training. The studies that Avishek posted are again meaningless for this discussion. It is essentially said that untrained people (not the population we are concerned about, right?) gain as much strength through flexibility training as through strength training. Show me that the strength group trained effectively (read: following a linear progression in the squat for 5 weeks, which should increase their training weights by ~75 lbs). When they were trained on a leg pressing machine (or similar device) or with no linear progression the study is worthless outside of demonstrating the lack of competence of the researchers.
« Last Edit: April 10, 2012, 12:06:38 pm by steven-miller »

TKXII

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Re: Kadour Ziani's Legs
« Reply #36 on: April 10, 2012, 06:30:44 pm »
-4
Someone said it right, and brought up new issues.

So if Kadour gets "stronger" due to flexibility, it does not mean he gets stronger inthe same way as through weight training. THe mechanisms are different, and may have different results as well. So it's not a paradox when I say strength in the weight room doesn't always matter for vertical jump, but flexibility may help Kadour Ziani get hops (perhaps maybe due to strength), because they are totally different.

So in conclusion, for the third time, kadour ziani's muscles aren't what contributes majorly to his vertical jump as it would for someone who strength-trained. His limb leverages have nothing to do with it (has anyone defined what limb leverages are optimal for high jumping...?). He has trained hard, through means which none of you fucking dumb pieces of shit udnerstand, and has seen results. He does not jump high off of two feet. He only jumps high off of 1 foot, only with a fast run-up, like a high jumper.

Also for everyone else who likes to prove themselves right and ride on false egos, strength training has been shown over and over again ti increase vertical jump. When I said the opposite, what I am bringing up is that strength training does not have to automatically increase vertical jump, of course it can help with two footed jumping but one footed jumping is another issue entirely.  Furthermore, when we're talking about kadour ziani, vertical jump means jumping like a high jumper. Deep squatting and deadlifting are not popular techniques among high jumpers. They are good for those who train vertical jump as a two footed vertical jump. Most high jumpers also have shitty SVJs.

And steven, just like everyone else on the forum who critically thinks with their amygdala and sensitive emotions, you are proving yourself to no where land. Here are problems with everything you wrote.

1. I agree that fleixbility training as not been shown to be an effective procedure for increaseing vertical jump. THere are about 2 studies in the literature that I'm aware of on this topic. What I said is that there may be mechanisms that you are not aware of that have helped Kadour jump really high with flexibility training.
2. No it does not matter that those studies were done on untrained individuals. the leg pres issue also does not matter. What matters is that a mechanism exists, and perhaps it helps Kadour jump higher. that's my whole point...I didn't say it DEFINITELY DOES HELP kadour ziani jump higher, but I do not think it's wise to dismiss his flexibility training (4 hours a day when he used to do it if he still does), as having no effect on his hops.
3. I did not ever recommend any vertical jump increasing method in any of my posts, so I don't know why you wrote:
"Just because there are characteristics that correlate with VJ besides force production DOES NOT TELL US that trying to improve those characteristics is an effective or efficient approach to train for VJ. "

That is irrelevant. Furthermore, it's wrong. I didn't say it has nothing to do with force production. Of course it has to do with force production, but more importantly, we need to know the means of force production. People who can jump high without weight training, but just plyos (possibly stretching for Kadour), are not just achieving high rates of force production with their muscles. They have tendons that assist them, period.


I did not want to talk about standing verticals, or two footed trianing, but single leg which we all know is quite different.
April 10, 2012, 06:30:44 pm - Hidden. Show this post.
"Performance during stretch-shortening cycle exercise is influenced by the visco-elastic properties of the muscle-tendon units. During stretching of an activated muscle, mechanical energy is absorbed in the tendon structures (tendon and aponeurosis) and this energy can subsequently be re-utilized if shortening of the muscle immediately follows the stretching. According to Biscotti (2000), 72% of the elastic energy restitution action comes from tendons, 28% - from contractile elements of muscles.

http://www.verkhoshansky.com/Portals/0/Presentations/Shock%20Method%20Plyometrics.pdf

Raptor

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Re: Kadour Ziani's Legs
« Reply #37 on: April 10, 2012, 06:54:01 pm »
+2
Yeah the one-leg jump is a bit different... it does require strength but it's more of an isometric nature (which is still generated by muscle strength). Still, that's all a muscle "needs to take care of" in a reactive (not voluntary propelled concentrically) one-leg VJ - immediately "lock in isometrically" and then the tendons do the rest (more exactly, the accumulated speed in the run-up does the rest as far as where the energy to go upwards is coming from - you still need the energy to go up there, but you use the energy that already exists in the form of run-up speed and you only need to convert it to vertical torque).

To be honest with you, I don't completely understand the phenomenon. But like Joel Smith said, explosive-isometric is a pretty good term for what happens to the muscles in the one-leg jump - they need to turn on extremely fast and they need to be strong enough to maintain the jumping leg's straight position for the best lever you can get (meaning - to prevent collapse at the ankle, knee or hip).

The thing is - I'm not sure what strength training really does to help this cause. I mean, in a high speed plant the forces on the loaded leg are 8-10x bodyweight. You can't simulate that stuff in the weight room. It's not like you're going to squat or lunge 10x. They also happen in a very short time span (as the amortization phase is very, very short) - so as far as specificity goes... the weight room is far and away from what you need.

Still, a bigger, stronger muscle helps since it should be able to better support the forces in the plant. But if you become accustomed to the eccentric-concentric stuff you usually do in the weight room, and at a slow pace, you can only wonder how that is going to really help specifically in a one-leg jump at a high speed.

I think it's best to work on muscle hypertrophy in the gym for a short while and then pretty much do jumps/sprints that actually use a explosive-isometric regime for your muscles. Bigger muscles + proper "regime" should equal success.
« Last Edit: April 10, 2012, 06:57:07 pm by Raptor »
Current PR status:

All time squat: 165 kg/Old age squat: 130 kg
All time deadlift: 184 kg/Old age deadlift: 140 kg
All time bench: 85 kg/Old age bench: 70kgx5reps
All time hip thrust (same as old age hip thrust): 160kgx5reps

TKXII

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Re: Kadour Ziani's Legs
« Reply #38 on: April 11, 2012, 12:57:25 am »
-2
Yeah the one-leg jump is a bit different... it does require strength but it's more of an isometric nature (which is still generated by muscle strength). Still, that's all a muscle "needs to take care of" in a reactive (not voluntary propelled concentrically) one-leg VJ - immediately "lock in isometrically" and then the tendons do the rest (more exactly, the accumulated speed in the run-up does the rest as far as where the energy to go upwards is coming from - you still need the energy to go up there, but you use the energy that already exists in the form of run-up speed and you only need to convert it to vertical torque).

To be honest with you, I don't completely understand the phenomenon. But like Joel Smith said, explosive-isometric is a pretty good term for what happens to the muscles in the one-leg jump - they need to turn on extremely fast and they need to be strong enough to maintain the jumping leg's straight position for the best lever you can get (meaning - to prevent collapse at the ankle, knee or hip).

The thing is - I'm not sure what strength training really does to help this cause. I mean, in a high speed plant the forces on the loaded leg are 8-10x bodyweight. You can't simulate that stuff in the weight room. It's not like you're going to squat or lunge 10x. They also happen in a very short time span (as the amortization phase is very, very short) - so as far as specificity goes... the weight room is far and away from what you need.

Still, a bigger, stronger muscle helps since it should be able to better support the forces in the plant. But if you become accustomed to the eccentric-concentric stuff you usually do in the weight room, and at a slow pace, you can only wonder how that is going to really help specifically in a one-leg jump at a high speed.

I think it's best to work on muscle hypertrophy in the gym for a short while and then pretty much do jumps/sprints that actually use a explosive-isometric regime for your muscles. Bigger muscles + proper "regime" should equal success.

I cant believe it. I need not say more. You said it very well.

I wonder what the exact mechanism is. Have you loked that up? I've seen studies back in the day showing collagen hypertrophy from plyos, but I don't want to go out on a limb and say things that incite a lot of confusion such as, Kadour Ziani relies on 0 muscle strength (actually I love to say things like that), and is purely a tendon jumper. What does that mean?

In triple jumping, the second phase of the maneuver, the "skip," creates forces 17+x bodyweight, up to 22x, in one study on a group of triple jumpers (in finland I think). So this type of training is doing something completely different from what we typically think of as "strength," but of course in the end the muscle is contracting.. but to say that Kadour Ziani has strong glutes is completely ignoring all the other structures that enable his muscles to contract so quickly and forcefully in a short time frame. Again, I don't know the exact physiology of this.
"Performance during stretch-shortening cycle exercise is influenced by the visco-elastic properties of the muscle-tendon units. During stretching of an activated muscle, mechanical energy is absorbed in the tendon structures (tendon and aponeurosis) and this energy can subsequently be re-utilized if shortening of the muscle immediately follows the stretching. According to Biscotti (2000), 72% of the elastic energy restitution action comes from tendons, 28% - from contractile elements of muscles.

http://www.verkhoshansky.com/Portals/0/Presentations/Shock%20Method%20Plyometrics.pdf

Raptor

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Re: Kadour Ziani's Legs
« Reply #39 on: April 11, 2012, 06:02:51 am »
0
To be honest, I have no idea. I have no idea how the muscles can stabilize 10x your bodyweight even for a very short time and until I understand that... I can't really comment. I can speculate but... I don't really have anything to base my speculation off.

The thing is that when your body (golgi receptors etc) feels that high of a shock it's going to recruit a very high % of your muscle fibers to support that, and they stay activated (recruited) enough to give you a concentric push as well. So you're going to use a higher % of your muscles than if you weren't to take in that shock and you were just putting out voluntary force (because, although the one-leg jump is isometric as far as planting goes, it's still concentric when you push off - you still have an angle at the hips that you push off from - so the glutes do a ton of concentric, voluntary push).

At least this is how I understand the one-leg jump.
Current PR status:

All time squat: 165 kg/Old age squat: 130 kg
All time deadlift: 184 kg/Old age deadlift: 140 kg
All time bench: 85 kg/Old age bench: 70kgx5reps
All time hip thrust (same as old age hip thrust): 160kgx5reps