Author Topic: Vertical jump hang time calculator web app  (Read 791 times)

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CoolColJ

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Re: Vertical jump hang time calculator web app
« Reply #15 on: June 18, 2020, 08:07:23 am »
0
Dang I got 57 inches on this dunk.... 1.09 sec hang time, maybe he got a boost from his hand hitting the rim on the dunk
Even measured from tip toe takeoff, to tip toe landing 1.05 sec hang time = 53.6  :o

But at 5'9" and this head height to rim, it's sure up there!



<a href="http://www.youtube.com/watch?v=-Osi-LXq1cM" target="_blank">http://www.youtube.com/watch?v=-Osi-LXq1cM</a>

« Last Edit: June 18, 2020, 08:10:00 am by CoolColJ »

seifullaah73

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Re: Vertical jump hang time calculator web app
« Reply #16 on: June 18, 2020, 09:28:18 am »
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isn't it possible for this method to give inaccurate results if you leap off with straight legs but coming down can be delayed by bending your legs and therefore increasing your air time.
Warm up drills
   - a walk, b skip quick powerful switch (heel to hams focus), a runs, dribbles small to big to run, straight leg to runs (force, reflex, go up/forward). force to hit the ground before it hits the ground knee/hip is at 90 degrees.
   - acceleration: low heel recovery, shin angle low, drive legs back before hitting the ground and drive thighs/knee forward not up
-------------------------------------------------------------
Measuring reminder:
5 toe to heel steps = 148cm
------------------------------------------------------------------------

�Strength comes from the legs, Power comes from the torso and Speed comes from the arm.� � Al Vermeil
Arm also aids the legs in driving it down with power - seifullaah73

My Progress Log
A Journey to Running fast and Jumping High
http://www.adarq.org/progress-journals-experimental-routines/my-journey-to-hypertrophy/

CoolColJ

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Re: Vertical jump hang time calculator web app
« Reply #17 on: June 18, 2020, 12:34:09 pm »
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isn't it possible for this method to give inaccurate results if you leap off with straight legs but coming down can be delayed by bending your legs and therefore increasing your air time.

Yes, but not many people do that naturally, as it hurts a lot :)
As your far stronger when you absorb the forces with a straight leg first

Also you use your judgement when setting the start and end points on the app, it's quite obvious when going frame by frame if someone is sand bagging


CoolColJ

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Re: Vertical jump hang time calculator web app
« Reply #18 on: June 19, 2020, 04:35:14 am »
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Got 48.3 on this old T-Dub ceiling touch jump

<a href="http://www.youtube.com/watch?v=R2-SWEkN63A" target="_blank">http://www.youtube.com/watch?v=R2-SWEkN63A</a>

CoolColJ

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Re: Vertical jump hang time calculator web app
« Reply #19 on: June 19, 2020, 04:51:35 am »
+1
On first jump, 12 feet touch I got  49.4 inches
48 to 51.5 on second jump
48.4 to 51.7 on third jump
51.7 on 4th jump
52.6 on 5th jump

But on his highest 6th jump, it was slo mo'ed... so it's definitely 52 or higher

<a href="http://www.youtube.com/watch?v=MmVIbx80MvU" target="_blank">http://www.youtube.com/watch?v=MmVIbx80MvU</a>