Help: Question on biomechanics

Boris Lekht boris7 at
Sun Sep 17 16:38:08 EST 1995

I know that all body positions and movements (such as standing,
push-up, pull-up, sitting etc.) are based on principles of physical
levers (1,2 and 3 classes).  However sometimes it is not easy for me to
determine what class of lever a body position or movement is represent.
 Please help me to understand the general rule (or rules) which I could
apply for resolution of my problem.
     Thank you.
     Boris          boris7 at

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