Trunk muscle activation while resisting asymmetrically applied loads in an axially rotated posture

Steven A. Lavender, Yang Hwei Tsuang, Gunnar B J Andersson

研究成果: 書貢獻/報告類型會議貢獻

摘要

The present investigation describes the electromyographic (EMG) response of eight trunk muscles during the application of loads to the torso while subjects maintained a twisted posture. The external moments of 20 and 40 Nm were applied to a harness system as each of the 10 subjects twisted 25 degrees. The applied moment direction was varied in 30 degree increments completely around the subjects (0 to 330 degrees). Surface EMG was used to monitor the left and right Latissimus Dorsi, Erector Spinae, External Oblique, and Rectus Abdominus. Multivariate and univariate analyses of variance (MANOVA and ANOVA) procedures showed significant main effects for all muscles and a significant moment magnitude by moment direction interaction effect in 6 of the 8 muscles. The greatest muscle activity was observed in the right Erector Spinae and the left External Oblique muscles. The results are also compared with an earlier study in which a similar loading paradigm was used as subject maintained a neutral upright posture.
原文英語
主出版物標題Proceedings of the Human Factors Society
發行者Publ by Human Factors Soc Inc
頁面752-756
頁數5
1
出版狀態已發佈 - 1992
對外發佈
事件Proceedings of the Human Factors Society 36th Annual Meeting. Part 2 (f 2) - Atlanta, GA, USA
持續時間: 10月 12 199210月 16 1992

其他

其他Proceedings of the Human Factors Society 36th Annual Meeting. Part 2 (f 2)
城市Atlanta, GA, USA
期間10/12/9210/16/92

ASJC Scopus subject areas

  • 工程 (全部)

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