ok i know we've talked about this before on here but definitely not using this example.. ok so im standing on a scale stiff legged, and im swinging my arms, swing down hard, weight goes up, swing up hard, weight goes down.. as to be expected of course.. the interesting thing is how far down i could get the scale to register with only modest armswing, standing normally at 153, got it down to 127 with just modest arm swing.

This is one reason I really love plate swings, seems to have alot of transfer to shoulder power specific to vert..

that's not the point of this post though.. i imagine the timing of armswing plays a huge roll in jump height, this might explain why I jumped my highest the other day on dunk attempt #82 than on any other dunk attempt.. when my shoulder power feels great, i jump better of course, but maybe not for the simple reason that i am producing more force through the hip/knee extensors by producing more force through shoulder flexion, but perhaps instead or in combination with the fact that my armswing may take place soon in my plant rather than later.

need some physics/biodynamics gurus to school us on how earlier/later onset of armswing could effect force production.

go!

:F

nice!!

i imagine biodynamic people could come up with something nice.. i mean, im just thinking about the vectors/forces and it makes some sense that the timing of arm swing could help to maximize the force produced by the legs, if the armswing comes a little earlier in the plant.. if you look at that thread in pics & vids, the one raptor posted, sir isaac is a good example of what i'm talking about.. check that thread out, that's exactly the type of arm swing im talking about..




tootle pip

pc

i'm not sure who it was but i think it was kelly who was saying you use a lot more lat when you plant off two feet with a ball in your hands

 I would assume that the arm swing should be timed in a way that you are overloaded in your eccentric phase but lighter in your concentric phase.

In that case, I would agree with adarqui... early swing time:

arms swing down = more weight while planting
arms swing up = less weight while rising

You can still jump well with a palmed ball off one leg... if you time your arm swing well the weight of the ball could even help.

never tried spiraling






i've actually done that with groups of kids except I never have them do it rapid, that's when the drill goes to complete crap... also it becomes sort of a punishment lmao

Bolt spirals a lot with his thighs/legs during his starts generating huge amounts of torque through his body.



Having the palms facing the body would mean there just being held in neutral & not being spiralled (pronation/supination).

Are you supposed to pronate or supinate?.


Spiralling the arm action which facilitates the extension on the big toe of the leg is very interesting, never heard that one before. Where did you hear that from Raptor & what is the anatomy behind it?.

Thankyou for that.

I think it was somewhere in Kelly's articles about this and how martial artists use it.