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Being an engineer i know well that the hangtime-vert calculation formula is 100% accurate, i even have my own excel version with the local gravity acceleration in the formula.
I was thinking:
The correct way to measure hangtime is to measure the time that the feet are in the air , from the first 'airborn' frame to the first 'touchdown frame'.
But doesnt that mean that we have a different measurement here compared to the normal one ( highest touch minus flat-footed reach )?
Instead of flat footed standing reach we are using 'toes-up' reach!
That would make the vertical measurements different by an amount equal to the flat-footed vs toes-up reach difference, wich would be ~4-5''.

What is your opinion?

well ya because, standing vert is a measure of how much your COM has changed from a flat-foot stand still.. so being up on the toes is changing the COM.. thats why in hangtime vids i always take the frame right before takeoff, still on the toes, but, right before your toes leave the ground.. this takes into account the 0.033s error also.. that gives you more of a vert number that is more similar to a vertec touch-reach.

the 0.033s error on takeoff and landing is the biggest concern with hangtime formula, when using 30fps cameras.. best case you're dead on, worst case you're 0.066s off.


ya it sux though i wish vertec's were ~20$.. vert training with one is so much better.

Probably ~32", which would be a PR.

very nice!

19 December 2009

6hrs ski

Legs = toasted.

snow is cool.. i saw it ONE time

Getting to the gym is harder just cause there's so much other shit going on, and then I'll be visiting family for Christmas, which is like a blitzkrieg because my mom's family is so big and spread out. I should be able to get a run in or some hill sprints or something and MAYBE get to a gym. And to be perfectly honest, it's easier to blur the line between legit reasons for missing workouts and excuses. Anyway, full-on workout tomorrow for sure, then Sunday if I'm lucky (gonna be on the road) and next Tuesday, then five days without gym access. Oh well, just gonna get some road workout ideas from Ross Enamait and stay active when possible.

ya man just throw in some sprints, bodyweight stuff, and jumps.. that'd be fine during your time off from the gym.

12/17/2009

4 rounds jumprope, wanted to do more, but it was pouring

bunch of pullups/pushups

2 x 50 depth drops from 18", legs were jello by the end

some ghr's

pc

ive never done line hops bare footed, i'd think they would really burn up?

The holidays are a great time for many reasons, but they sure make it harder to get to the gym  Anyway, yesterday I just had time for squats, but I finally felt like the form was back and I started progressing again.

Warm up
abbreviated

Work
Squat 3x5x250

Cool down
stretch

why is it harder to get to the gym?

thats why i liked having the key to MSC.. we'd go do workouts on x-mas & other holidays ;0

13 December 2009

Failed vertical jump testing & dunk session.

Reason 1 : 8 Degrees Celsium + wind + light rain.
Reason 2 : Weight with clothes = 199lbs.
Reason 3 : RVJ still fucked up , i feel totaly out of coordination, probably from excess bodyfat.

2x5 SVJ : getting steady 27'' , 0,5'' below PR.
2x5 RVJ : feeling like crap and getting 29''. Yup , just 2'' above SVJ , negative SVJ-RVJ gap PR!
No dunks attempted , '29 inches' and 'dunk' cant exist together...

trying to dunk in 8*C / wind / light rain has got to suck.. heh.