Citation

Marras WS. Int. J. Ind. Ergonomics 1988; 3(1): 19-27.

Copyright

(Copyright © 1988, Elsevier Publishing)

DOI

unavailable

PMID

unavailable

Abstract

The biomechanical analysis technique of Schultz and Andersson (1981) was used to predict sagittally symmetric activity of the trunk under motion conditions. These biomechanical predictions were compared with the results of experimental exertions of 20 male and female subjects performing both isometric and isokinetic back extention activities. The results indicate differences in behavior of the internal trunk structures under motion conditions compared with quasi-static model predictions. The behavior of the model components are scrutinized and means to embellish the model to account for muscle state and trunk velocity are discussed. These findings have implications for ergonomic designs, manual materials handling, standard setting and clinical evaluation.