Influence of body segment dynamics on loads at the lumbar spine during lifting

Y. H. Tsuang, O. D. Schipplein, J. H. Traflmow, G. B J Andersson

研究成果: 雜誌貢獻文章同行評審

39 引文 斯高帕斯(Scopus)


Flexion-extension moments acting at the L5/SI level and hip joints were calculated using three different techniques; a pure static analysis, a static analysis including the inertial force of the load, and a dynamic analysis. Ten subjects participated in the study and were asked to lift a box weighing either 50 N or 150 N, using a freestyle technique. The lifts were performed at normal and fast speed. The intra-subject lifting techniques were consistent when lifting the same loads. The moments predicted by the dynamic analysis and the static analysis were the same when holding weights in static postures. When performing the lifts, differences in the peak moments occurred between static and dynamic analyses. These differences were influenced by external load and by lifting speed. Taking the effect of the inertia of load into account in the static analysis resulted in an increase in the moment magnitude, but the ’predicted moment was still much less than in the dynamic analysis which yielded the largest moment magnitudes. The difference between dynamic and static analysis was greatest when lifting 50 Nat fast speed; an 87% increase in L51S I moment and a 95% increase in hip moment was observed when replacing the pure static with a dynamic analysis.

頁(從 - 到)437-444
出版狀態已發佈 - 1992

ASJC Scopus subject areas

  • 人因工程和人體工學
  • 物理治療、運動療法和康復
  • 工業與製造工程
  • 心理學(全部)
  • 應用心理學


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