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unknown user
12-19-2005, 02:00 AM
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Krystyna Gielo-Perczak, Biomch-L Co-moderator

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Title: Theoretical justification for return/tension relationship

I came up with a seemingly useful diagnostic tool for coaches but I
would like to strengthen up the theory behind.

The goal is to diagnose unwanted tension (as defined by
counter-productive excess antagonist activity) in a sports movement.
The technique I came up with is to use a visual cue - the 'return' after
a follow through. What I mean by 'return' is the natural return of a
joint (through elasticity of supporting muscles) to its base position
after being taken to an extreme position by the follow through.

It was in badminton smashes that I looked at this. After the racket
impacts the shuttle it follows through such that the forearm becomes
pronated and the wrist flexed. This then bounces back, or 'returns' to
a more neutral position. Through self experiments and discussion with
coaches I concluded that unwanted tension interfered with this process
so that the return was reduced or eliminated (at least temporarily) when
the player was tense (e.g.
putting in too much effort).

The coaches I have talked to about this have welcomed the diagnostic
technique because it allows easy diagnosis of tension through
observation of the follow through/return.

The thing is I'm lacking a really good theoretical justification for
this.
Can anyone add any weight to my theory?

Thanks

Joe

Joe Wright
badmintology@topracket.com
www.topracket.com/Badmintology