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Lackluster update: ended up cancelling plans with friends to play basketball lol. I'll do more SVJ's on monday before lifting. I'll try deeper knee bends.

About the reaching up thing that T0ddday mentioned:
Another factor is that if I jump high and reach with my right arm, my body shifts to the left a little so my shoulder/elbow/wrist/fingertips are lined up "north/south" moreso than before. Sure when you do a standing reach this happens to some extent, but not completely as both of your feet have to be flatfooted.

A real vertical jump height is measured by how much you move your center of mass. But what if we have two people who both have a reach of 96", but one of them has size 9 feet and the other size 14? If they both have a highest touch of 120", is the one with way bigger feet really jumping as high as the other? Sure the difference is minimal, maybe 1.5" but... it bothers me dammit. I guess "vertical leap" isn't clearly defined is it.

damn!

thread title...

^^ Really? Damn! I don't think I have a 35" SVJ yet though, that's pretty high. I think I have to try touching a measured object to see if I should be including the flatfooted part. I'll see how high I can get up to the rim today. I may be disappointed though; my squat:bw ratio is the highest it's ever been, but I have very little movement efficiency right now so I'm not sure how high i'll jump. I also have no clue how much movement efficiency affects my SVJ. It DOES affect my RVJ a ton though.

As for the knee bend, I'll try different things and see what happens. But this is important, and it drives me nuts and I have to say it. It's slightly relevant:

High vert is not a function of low GCT per se. Do not try to consciously lower your GCT.
High vert is a function of GCT is a function of POWER.

Your GCT's are lowered by increasing POWER, not by physically trying to stay on the ground less by means of anything else, like lessening knee bend.


Similarly:
A deep knee bend means you have more time to apply force to the ground and therefore jump higher right?
Well what if a deep knee bend is a function of not enough power? you're still ammortizing in a sense...
Perhaps shallow knee bend is a function of higher power, because the legs are able to reverse the countermovement instantly! This must be the case for the 50" jumpers that barely bend their knees.

Somewhere in between the two will be the optimal knee bend for everyone. But the question is: should we consciously try to change knee bend amount? Or should we just do what happens naturally, and assume that knee bend amount is a function of power?

Well hey, maybe if knee bend amount IS a function of power, is that still optimal? (I find it crazy how people can snatch more if the beginning of the movement isn't as fast as possible, but rather, the second part of it is).




edit; @vag, from your post:

What seemed to work was use the hangtime calculator measuring the toes-off-to-touchdown hangtime, and then add the 'reach on toes - reach flatfoo

I measured 30-31" from heels off to toe touchdown. if i measure from toes off to toe touchdown, then I take away 4 frames. Instead of 48 frames, I now have 44 frames / 60FPS = 0.733sec or.... 25-26" vertical. Add the 5" correction and I'm back at 30-31" dammit.

this is the paper i was thinking of: http://www.ncbi.nlm.nih.gov/pubmed/25965000 "Effect of different knee starting angles on intersegmental coordination and performance in vertical jumps"

also if anyone has journal access, this one looks really interesting: http://www.ncbi.nlm.nih.gov/pubmed/26712510 "Understanding Vertical Jump Potentiation: A Deterministic Model"

Nice! Makes me think I'll put another 2 inches on my SVJ's with a little knee bend. I may play basketball today (for the first time in many months) and I'll record some SVJ's.

<a href="http://www.youtube.com/watch?v=JVTRmphiKH0" target="_blank">http://www.youtube.com/watch?v=JVTRmphiKH0</a>

Download this so you can play frame by frame:
https://chrome.google.com/webstore/detail/frame-by-frame-for-youtub/elkadbdicdciddfkdpmaolomehalghio?hl=en-GB I counted 24 frames. First frame was heel leaving the ground. Last frame was toes touching ground. That's how it's counted, right? 24 / 30 = 0.8sec in the air. That's 30-31 inches according to this chart: http://www.addoa.com/blog/diy-how-calculate-your-vertical-jump The vid is 60fps though on my phone. I'll try to get a more accurate read frame skipping on my computer. Edit: counted 48 frames at 60fps, giving me 0.8sec again.

According to the VJB calculator, at a weight of 195 and squat of 420 I should be jumping 36" standing. Damn I'm pretty short on that. The calculator has been very accurate for me in the past though, when I was consistently playing basketball. Makes me realize that movement efficiency helps SVJ's a ton, not just RVJ's.

BTW, I didn't know I used so little knee bend!

Ive always wanted to try out a weightvest, especially while playing basketball. I remember reading about weightbelts being better as they dont affect your posture. Also the weight is centered near your center of gravity, so movements arent affected either. Thats the idea at least.

I have to take a look at the VJB program. Personally i think it should be 90% plyo focused. Not much emphasis on speed squats and such. I think lifting at 85% at max speed intended effort accomplishes RoFD gains just as much, if not more, as 20% max speed lifts do. Plus the strength gains.

Plyos will train RoFD better than speed squats and box squats or whatever imo. Plus its more specific to jumping.

Let out all the puke man. Dont ever hold it in, you feel better as soon as its out. Keep yourself distracted with basketball and weights. Hang out with some friends if you all have time, tell them you dont even want to mention the situation. Dont tell them to console you. Just have it be a distraction as if nothings going on. The purpose of this is to see that you can find happiness in many other things Chris. All is not lost! Hopefully you can think more clearly after this.