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Lee Aylett
12-04-1998, 10:55 AM
Hi everybody,

I'm a bit of an amateur as far as bio-mechanics is concerned so forgive
me if this question is simple or obvious. Most of my study of this
subjects comes directly from text books but this is a question (or
series of questions) that I don't seem to find addressed.

With concern to concentric contraction within a muscle, say the biceps
for example, I'm interested to know at what stage within ROM does a
muscle reach maximum speed? Does it simply continue to accelerate until
it is inhibited and forced to decelerate by another part of the body, or
does it accelerate until maximum contraction is achieved and then
decelerate? Does maximum contraction equal the end of movement or simply
the point where a muscle cannot continue to apply a force? Or, does a
muscle reach maximum speed before it achieves maximum contraction
perhaps because all the available fibres have been fired? If this is the
case what happens next? Does it continue at that speed or begin to
decelerate? If a muscle does reach maximum speed before it reaches
maximum contraction how long would it take in the biceps for example? 30
degrees, 60 degrees? How much does a preceding eccentric movement effect
this process?
Hey do I sound confused?!!
Hope some of this is clear, I'm sure there is a simple answer to all
this rambling.

Thanks in advance,
Lee Aylett.

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