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Isometric efforts

post #1 of 4
Thread Starter 
Can someone (I am thinking Lisamarie, but anyone who feels inclined to do so is welcome) give a short run down to me (and to whoever may be interested) of what constitutes an "isometric effort" (related to our muscles, that is) and in which sports/activities we're more likely to meet
this? What are the implications? Positive/Negative?
As an example, cutting wood with an axe constitutes an "isometric effort"...
Playing tennis, where a person has to "work" in bursts of activity an stop or lock his body (albeit for the briefest moment) into a position
is seen as being an "isometric effort".
I took the sentence "isometric effor" directly form the italian (medical) language, so I'm not sure if the message wil be ndertood.
TIA Matt.
post #2 of 4
The word isometric refers to contraction with no change of muscle length, or, muscle tension without movement. In the 60s and 70s, it was used as a form of sport training, but later, it was discovered that it promoted too much static placement. A good example is the wall sit.

But in every movement, there is a prime mover that contracts concentrically, an antagonist that lengthen eccentrically, and a stabilizing group that contracts isometrically.
post #3 of 4
Thread Starter 
Thanks Lisa.
Is there any negative implication with this?
As an example, related to the blood pressure on the heart?

[ August 14, 2002, 07:58 AM: Message edited by: M@tteo ]
post #4 of 4
there have been some studies that say that someone with high blood pressure should not perform specific isometric exercises.

There is, however a PT in Denver, who works with the Denver Broncos, who practices a method called muscle Activation technique. A muscle is first isometrically contracted in neutral alignment, internal, then external rotation. It is followed by an isotonic [with movement} exercise that isolates the muscle group, then inturn, an exercise that integrates it with other muscle groups.
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