Effect of optimization criterion on spinal force estimates during asymmetric lifting

被引:15
作者
Hughes, RE [1 ]
机构
[1] Univ Michigan, Orthopaed Res Labs, Dept Surg, Ann Arbor, MI 48109 USA
关键词
lumbar spine; optimization; lifting; muscle forces;
D O I
10.1016/S0021-9290(99)00153-0
中图分类号
Q6 [生物物理学];
学科分类号
071011 ;
摘要
Optimization-based muscle force prediction models of the lumbar region are used in research and ergonomic practice, usually as a subroutine of a job analysis software package. Various optimization criteria have been put forward for use in rationally selecting a set of muscle forces to satisfy moment equilibrium, including the sum of cubed muscle contraction intensities and a double linear programming procedure for minimizing the spinal compression force and maximum muscle contraction intensity. A laboratory study was conducted to determine whether these two model formulations produce significantly different estimates of spinal forces for a dynamic asymmetric lift. Although statistically significant differences were found between the predictions of the two models, the difference in peak spinal compression force was only 1.1%. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:225 / 229
页数:5
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