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Performance Area => Strength, Power, Reactivity, & Speed Discussion => Topic started by: Nightfly on November 02, 2010, 06:58:17 pm
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I'm wandering has anybody studied the correlation between leg strength and jumping ,statistically across the planet, and let's say what percent of the people in the world have a 40 inch and bigger vert? I'm really curios about this
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I don't think that's the case... I don't think this exists. Your best bet is to increase your strength since it's the most modifiable quality in terms of athleticism (your structure stays fixed, your explosiveness in terms of quickness is pretty much genetic with a very low training gain threshold). You can only really affect strength and movement efficiency to improve your athleticism. Well, that and bodyfat %.
It's hard to make a direct correlation because of biodiversity and other factors involved, like the ones above. But I think it's safe to say that unless you squat 2x+, your strength will be a limiting factor.
If that kind of answers the question.
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I understand this, but i'm curious if someone did a paper on this, and how it influences people around the world. Also i would like to see a percantage based vert like: 10 inches - 50% of the people 20 inches- 30% 30 inches 15% and so on
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I don't think that's ever been done. Too much info needed for an "unimportant" subject at the planetary level.
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oh come ooon , just google some relative phrases , search through the results and you'll find stuff...
here's what i got with just 1 try and no searching at all...
http://jumpshigher.com/average-vertical-jump (http://jumpshigher.com/average-vertical-jump)
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I've searched. 90% is bs and there is 1 paper but you have to pay to see it...
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you'd probably have to use a normal distribution curve to find what percentile you are in. Assuming jumping is normally distributed. Find the median. do some research and calculate the standard deviation of a decent sample on a calculator. Then calculate how many standard deviations away desired vert jump number is from median. (zscore) Then find a normal distribution table and find the percentile that matches up with your z score.
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Well if you used comments on youtube videos as your sample then about 98% of people have a 40+" vert. luuuulz
I don't know if I would trust many studies though because vert numbers are so inflated everywhere, it's stupid. I pretty much don't believe any vert number I hear unless I see proof. I'm so tired of everybody claiming they have a 36" vert or they can dunk or they used to be able to dunk... blah blah blah.
A true 40" rvj is very rare. A true 40" svj is probably 5x more rare.
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you'd probably have to use a normal distribution curve to find what percentile you are in. Assuming jumping is normally distributed. Find the median. do some research and calculate the standard deviation of a decent sample on a calculator. Then calculate how many standard deviations away desired vert jump number is from median. (zscore) Then find a normal distribution table and find the percentile that matches up with your z score.
LOL WTF.
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tons of studies have correlated leg strength improvement via squatting to vert gains etc.. their are old russian sports stats and stuff like that, which give details about percentiles on various performance markers, by age etc.. can't find them though. There hasn't really been any worldwide studies on it though, from what I've seen. All you can go on really is small sample sizes, use those averages/stats.
here's a question from Nizar to Prof. Verkhoshansky:
Dear Professor Dr. Verkhoshansky,
I'm interested in the average relative strength numbers of elite level highjumpers in the squat exercise. Also, do these high jumpers ever reach relative strength levels that don't allow for further transfer to the high jump?
Is there a general guideline derived from practice on how much relative strength is enough for athletes interested in maximizing vertical jump height? I'm not only asking about jump height off a single leg like in the highjump, but also about vertical jump height from a standing start or from a run with both feet.
Yours respectfully,
Nizar Abu-Hamdeh
Vienna, Austria
Verkhoshansky's response:
Dear Nizar Abu-Hamdeh,
your questions include different aspects:
1) relation between the maximal weight of Barbell Squat and the maximal force developed in the legs extension movement - this relation could be influenced by the athlete’s Barbell Squat execution technique;
2) relation between the maximal strength of leg extensors and the T&F high jump result - this relation is strongly influenced by the T&F high jump execution technique;
3) the nature of the leg extensors maximal strength; in other words, what kind of training method has been used for the maximal strength increasing - if this strength has been developed using Bodybuilding methods (with muscle hypertrophy), it could not assure the explosive strength increasing.
So, there could not be a general and universal guideline on how much relative strength is enough for athletes to maximize vertical jump height.
But to have information that could help you, you should find specifics experimentals results of in publications. These experimental results must be referred to the parameters of high level T&F high jumpers group: the relation between their results in high jump, vertical jump (Abalakov) and the maximal weight that they are able to lift in Barbell Squat in the same day.
Unlikely, I have not these data.
Yuri Verkhoshansky
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If Verk didn't have it, there's like 0% chance of anybody else having it.
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Yeah, well thank you anyway
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i have a paper at home by Bondarchuk that correlates jump (LJ, TJ and HJ) performance with half squat, 30m accel, OHB shot and a couple more tests...the athlete's level is quite high aswell, i think they range from 6.80 to 8m in LJ, forgot about HJ.
the biggest correlations (for HJ and LJ) were with half squat (which is prolly a quarter squat for them, femur at 45 degrees, but that's just a thought), and 30m dash (i think downstart).
The values range from 0.7 to 0.9 ?? if i remember exactly...depending on the gender and performance (like 6.80-7m would have a 0.73 correlation, 7m - 7.20m would have a 0.8 one and so on....these are just examples so dont take them as granted)
also, regarding the OHB throw, pfaff was saying that when he had the bruny surin/obba thomson and and donovan bailey training together the OHB was the best correlator with their 100m...same for women when he was coaching at LSU
however....corelation doesnt mean he is fast because of OHB or because of squatting, could be the other way around, u never know
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i have a paper at home by Bondarchuk that correlates jump (LJ, TJ and HJ) performance with half squat, 30m accel, OHB shot and a couple more tests...the athlete's level is quite high aswell, i think they range from 6.80 to 8m in LJ, forgot about HJ.
the biggest correlations (for HJ and LJ) were with half squat (which is prolly a quarter squat for them, femur at 45 degrees, but that's just a thought), and 30m dash (i think downstart).
The values range from 0.7 to 0.9 ?? if i remember exactly...depending on the gender and performance (like 6.80-7m would have a 0.73 correlation, 7m - 7.20m would have a 0.8 one and so on....these are just examples so dont take them as granted)
also, regarding the OHB throw, pfaff was saying that when he had the bruny surin/obba thomson and and donovan bailey training together the OHB was the best correlator with their 100m...same for women when he was coaching at LSU
however....corelation doesnt mean he is fast because of OHB or because of squatting, could be the other way around, u never know
great post, what's the title of that paper?
peace man
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its not rly a paper, its a pdf file, i think it's called 'transfer of training' by Bondarchuk
and it's not the book :D, it's just a 10pg file
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you can find the article on www.athleticscoaching.ca
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you can find the article on www.athleticscoaching.ca
Direct link pls.