【摘要】：目的:比較五種日�；顒酉�,由胸節(jié)段、腰部全節(jié)段構(gòu)成的簡略軀干模型與由胸節(jié)段、上腰節(jié)段、下腰節(jié)段構(gòu)成的細(xì)化軀干模型的運(yùn)動學(xué)差異性。方法:使用NDI運(yùn)動捕捉系統(tǒng),采集26名健康的年輕志愿者在水平行走,上樓梯,軀干前屈,同側(cè)拾取物體,對側(cè)拾取物體五種活動下的胸節(jié)段,上腰節(jié)段,下腰節(jié)段和全腰節(jié)段的運(yùn)動學(xué)參數(shù)。采用主成分分析的方法,分析三節(jié)段細(xì)化軀干模型和兩節(jié)段簡略軀干模型運(yùn)動學(xué)參數(shù)的主成分的貢獻(xiàn)率與載荷系數(shù)。結(jié)果:簡略軀干模型中,全腰段的屈曲角度和側(cè)彎角度顯著高于胸節(jié)段,細(xì)化軀干模型中,下腰段的屈曲角度和側(cè)彎角度顯著高于其他節(jié)段。在水平行走和上樓梯活動中,細(xì)化模型中的腰部兩節(jié)段的載荷系數(shù)符號相反。結(jié)論:軀干的運(yùn)動主要是由腰部提供且主要是由下腰部分提供。在某些活動中,腰部節(jié)段間的運(yùn)動出現(xiàn)了相互抵消的作用。因此,在進(jìn)行軀干的運(yùn)動分析時,需要對軀干進(jìn)行細(xì)分成多節(jié)段,尤其要注意對腰部的細(xì)分。
[Abstract]:Objective: to compare the kinematic differences between the simple torso model composed of chest segment and waist segment and the refined trunk model composed of chest segment, upper lumbar segment and lower lumbar segment under five kinds of daily activities. Methods: using NDI motion capture system, 26 healthy young volunteers were collected to walk horizontally, go up stairs, bend their torso forward, pick up objects on the same side, pick up chest segments and upper lumbar segments under five kinds of activities on the opposite side. Kinematic parameters of lower lumbar segment and full lumbar segment. The contribution rate and load coefficient of principal components of kinematic parameters of three-segment refined torso model and two-segment brief torso model are analyzed by principal component analysis (PCA). Results: in the brief trunk model, the flexion angle and lateral bending angle of the whole lumbar segment were significantly higher than those of the chest segment, and the flexion angle and lateral bending angle of the lower lumbar segment were significantly higher than those of the other segments in the refined trunk model. In horizontal walking and staircase activity, the load coefficient symbols of the two segments of the waist in the refinement model are opposite. Conclusion: the exercise of torso is mainly provided by waist and lower waist. In some activities, the motion between lumbar segments counteracts with each other. Therefore, in the analysis of torso motion, it is necessary to subdivide the torso into multiple segments, especially the waist subdivision.
【作者單位】： 清華大學(xué)機(jī)械工程系;深圳清華大學(xué)研究院生物醫(yī)用材料及植入器械重點(diǎn)實驗室;深圳市第二人民醫(yī)院;
【基金】：深圳市科技計劃項目(CXZZ20130321163655111) 廣東省科技計劃項目(2014A020212655) 深圳市行業(yè)公共技術(shù)服務(wù)平臺資金項目(SMJKPT20140417010001) 深圳市科技計劃基礎(chǔ)研究項目(JCYJ20151030160526024)
【分類號】：R496

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