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Server:
As an orthopaedic surgeon I can add this
thought:
When the caster attempts to initiate what he
calls a "stop", the muscles which have been moving and rotating the rod in the
direction of the cast quickly diminish activity while the muscles acting in the
opposite direction rapidly come into action. There is a brief period
(different with different casts and different casters) when both muscle groups
are acting at the same time to stabilize the fly rod.
We call the muscles acting to rotate and
move the rod tip in the direction of the cast, the AGONISTS whereas the muscles
acting in the opposite direction are called the ANTAGONISTS.
The interval between the primary use of the
agonists and that of the antagonist musculature when of short duration give the
apparent "quick stop" and vice versa. A true STOP as defined by total
cessation of movement almost never occurs, but one can come as close as possible
to this when the agonist and antagonist muscles are acting in concert and are
equally effective. I see this as yielding the "platform" we've
discussed.
Best,
Gordy
In a message dated 5/26/2009 2:45:16 P.M. Mountain Daylight Time,
hillshead@xxxxxxxxxxx writes:
Hi all,
I'm sending this along right now - it is incomplete, but I want to
demonstrate that on my end something is actually occurring. I need a
brake right now but tonight I hope to send attachments with some plots and
other stuff. I want to review the text in more detail and it will surely
change. This is more in the manner of a heads up.
If you want to maintain "stop" as a useful tool you may consider talking
about what actually happens. I think most teachers use it to move pupils
away from waving the rod (insufficient rod deflections) to a situation where
they achieve greater levels of rod loading. Using the word "stop" to
explain is tricky because what the student must achieve is muscular tenseness
during rod loading and unloading movements (during unloading it is mainly a
carryover from loading anyway). Apparently teachers have had success
assoctiating the muscular tenseness during unloading motions with the idea
that "stops" are occurring. A fact is that once you decide on a hand
motion range (translation and rotation) appropriate to your casting
objective, muscular tension is required during the later portion of the
movement to generate butt rotation speeds and rod loading. It carries
over to unloading (something natural occurs here at the end of hand travel -
the hand has to stop and there is the carryover muscle tenseness from rod
loading) and the more you can do during unloading the greater the line speeds
achieved. A teaching mechanism I use is to help the student
understand is to have them hold my arm (biceps and triceps) and feel the
contradictions at rod loading and beyond. Then I have them hold their
own arm to see if similar contractions are occurring. I guess I'm
thinking and writing on the fly but my inclination would be to refer to it as
"maximal tenseness" development or "muscle contraction" at end of stroke and
say this can feel sort of like a stop(?). But right now a truthful
description is that what is occurring is a heightened (not necessarily
maximal) level of muscular activity all the way from end of preload to
RSP. RSP defines where real stopping begins and the end of the
heightened muscular activity.
More later - Server
Walter...
I agree
with you all the way.
The paper
will be met with antagonism and skepticism if we don't carefully talk about
the value of continuing to use the term STOP as a teaching tool as
well as the things a true STOP can do such as forming a platform, etc.,
etc.
Gordy
Do we want to add anything to this paper? It seems
somewhat simplistic at this point but my opinion
is that we should not dilute the basic concept with
other stuff. I think this is going to be a bit of a change
for some people.
Gordy also raised an excellent point today in his
study group regarding the usefulness of "the stop"
as a
teaching tool. I think with a bit of discussion
people will realize that we are not advocating getting rid of
the stop as a teaching aid or as
a stylistic element with many useful benefits.
I think a second paper discussing some of the
implications would be a good way to go.
Thanks
Walter
----- Original Message -----
Sent: Saturday, May 23, 2009 9:55
AM
Subject: RE: Stop paper version
2
Walter, Server & Jason....
I've
spent some time going over the wording of this paper and find nothing
which fails to fit my own concepts.
The
format looks OK to me. I could find not spelling errors or
problems with language.
Best,
Gordy
I've done some clean up on and simplification of
the stop paper and attached it for your perusal.
Thanks
Walter
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