QUANTITATIVE TRUNK MUSCLE ELECTROMYOGRAPHY DURING LIFTING AT DIFFERENT SPEEDS.

被引：0

作者：

Kim, J.Y. ^{[1
]}

Marras, W.S. ^{[1
]}

机构：

[1] Ohio State Univ, Columbus, OH, USA, Ohio State Univ, Columbus, OH, USA

来源：

International Journal of Industrial Ergonomics | 1987年 / 1卷 / 03期

关键词：

BIOMEDICAL ENGINEERING - Electromyography - ERGONOMICS - MATERIALS HANDLING - Human Factors - RISK STUDIES - Occupational Risks;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This study investigates the effects of trunk motion under lifting conditions described by the Work Practices Guide for Manual Lifting (NIOSH, 1981). Eight male volunteers were used as subjects in this study. Three independent variables (lift style, load location and subjective lift velocity) were controlled under sagittally symmetric lifting conditions. Dependent variables consisted of trunk muscle electromyographic (EMG) activity, actual trunk velocity and load acceleration. There was no effect of lift style. However, as the trunk velocity increased, EMG activity increased within the latissimus dorsi and rectus abdominus muscles but not within the erector spinae muscles. The erector spinae muscles, unlike the other muscles, was also unaffected by load location and load acceleration. These findings suggest ways in which lifting guides should be adjusted to account for the effects of dynamic motion.

引用

页码：219 / 229