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Mr A G S Hofmeyr
07-28-1995, 12:29 AM
Forwarded message:
From: Self
To: biomech-l@nic.surfnet.nl
Subject: body instability under load
Date: Fri, 28 Jul 1995 14:11:31

In the weightlifting Clean and Jerk the weightlifter is required to
hold the weight steady overhead to succesfully complete the lift.

It has been observed that when a world record weight is held overhead
thelifter tends to shake uncontrollably.

The body has to support the weight in compression and there is a
limiting weight that any structure can support in compression. At
this limiting or buckling weight the stiffness of the structure is
reduced to zero hence the inability to stop lateral movement.

It is proposed to develop a theoretical model of the body as
a structure under compression with the correct geometry and spring
stiffnesses.

Has anyone worked on this topic?