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Relation between abnormal synergy and gait in patients after stroke.

机译:脑卒中患者异常协同作用与步态的关系。

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摘要

[Background]The abnormal synergy seen in patients after stroke is considered to limit the ability of these patients. However, in the lower extremity, antigravity torque generation rather than precise movement is needed for functions such as sit-to-stand movement and gait. Therefore, the ability to generate torque may be important either as a primary movement or as an abnormal synergy. We attempted to quantify the torque generation in the lower limb, selectively and as an abnormal synergy, and its relation with gait. [Methods]Selectively generated plantar flexion torque in the ankle and plantar flexion torque secondarily generated accompanying maximal hip extension (i.e., torque generated with abnormal synergy) were measured in subjects after stroke and control subjects. In subjects after stroke, secondary torque generation while controlling hip extension torque as 25%, 50%, and 75% of the maximal hip extension was also measured. The relation of torque generation with the gait speed and timed-up-and go test (TUG) was also analyzed. [Results]In subjects after stroke, there was no difference between the amount of plantar flexion torque generated secondarily and the selectively generated torque, whereas the selective torque was significantly greater in control subjects. Pearson product–moment correlation coefficient analysis revealed that TUG speed is related to secondarily generated torque accompanying maximal hip extension but not with selectively generated torque. [Conclusion]udSecondarily generated torque was found to be a factor that affects TUG speed, and the ability to generate torque even through abnormal synergy may help for gait ability in subjects after stroke.
机译:[背景]卒中后患者中发现的异常协同作用被认为限制了这些患者的能力。但是,在下肢中,需要进行反重力转矩生成而不是精确的移动,以实现从坐到站的运动和步态。因此,产生扭矩的能力对于一次运动或异常协同作用可能很重要。我们试图量化下肢产生的扭矩,有选择地并将其作为异常的协同作用,并将其与步态的关系量化。 [方法]在中风后的受试者和对照受试者中测量在踝关节中选择性产生的足底屈肌扭矩和随最大髋关节伸展而第二次产生的足底屈肌扭矩(即,异常协同产生的扭矩)。在中风后的受试者中,还测量了在控制髋部伸展扭矩为最大髋部伸展的25%,50%和75%的同时产生次级扭矩。还分析了扭矩产生与步态速度和定时起步测试(TUG)的关系。 [结果]卒中后受试者的第二次产生的plant屈扭矩与选择性产生的扭矩之间没有差异,而对照受试者的选择性扭矩明显更大。皮尔逊乘积矩相关系数分析表明,TUG速度与伴随最大髋关节伸展的第二次产生的扭矩有关,但与选择性产生的扭矩无关。 [结论] ud发现二次产生的扭矩是影响TUG速度的因素,即使通过异常协同作用产生扭矩的能力也可能有助于中风后受试者的步态。

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