Patent ID: 6152890
Filing Date: 2000-11-28
Classification: A61B,G16H

Abstract:
A method for the recording, presentation and automatic classification of biomechanical load variables for classified postures measured on a freely moving test personal during a work shift, comprising the steps of:(a) measuring a set of body angles over a period of time, on the freely moving test person during physical activity;(b) measuring a ground reaction force and the points of force application in a region of a sole of a foot of the test person;(c) determining threshold values for the identification of postures and comparing of the threshold values determined with the measured body angles to identify a set of motion patterns;(d) calculating an expected total ground reaction force based on the measured body angles together with a set of corresponding anthropometric data;(e) subtracting the measured total ground reaction force from the expected total ground reaction force to determine a set of externally exerted forces;(f) identifying the motion patterns and an output of load profiles;(g) deriving the acceleration and velocity component of the measured body angles and transforming them into individual joint forces and joint moments while taking account of the measured ground reaction force;(h) deriving a disc comparison force; and(i) presenting the time characteristic of the disk compression force as a load indication, so that a set of test numbers is derived for use in the study of load variables on individuals in a work site.