Increased temporal stride variability contributes to impaired gait coordination after stroke.
Increased temporal stride variability contributes to impaired gait coordination after stroke.
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DOI：
10.1038/s41598-022-17017-1
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发表时间：
2022-07-25
影响因子：
4.6
通讯作者：
Lodha, Neha
中科院分区：
文献类型：
--
作者：
Patel, Prakruti;Enzastiga, Diana;Casamento-Moran, Agostina;Christou, Evangelos A.;Lodha, Neha
运动变异性增高是卒中后的一个突出损害。在行走过程中，中风幸存者表现出增加的空间和时间变异性，然而，增加步态变异性的功能意义还没有得到很好的理解。在这里，我们确定的影响步态变异的协调下肢之间的地上行走中风幸存者。非卧床中风幸存者和对照组以首选的步速行走。用相位协调指数（PCI）测量步长和步长时间变异性，以及反相位步态协调的准确性和一致性。与对照组相比，卒中幸存者的步幅变异性、步幅时间变异性和PCI增加。在中风组中，步幅时间变异性而非步幅长度变异性预测了PCI的43%的变异。跨步时间变异性是相位误差和一致性的重要预测因子。尽管中风后空间和时间步态变异性受损，但时间变异性增加会导致步态协调的准确性和一致性中断。我们提供了新的证据表明，中风后步态协调性的下降与步幅时间变异性的加剧有关，但与步幅长度变异性无关。时间步态变异性可能是运动功能下降的一个可靠指标，也是促进中风后稳定行走的运动干预的理想目标。
Heightened motor variability is a prominent impairment after stroke. During walking, stroke survivors show increased spatial and temporal variability; however, the functional implications of increased gait variability are not well understood. Here, we determine the effect of gait variability on the coordination between lower limbs during overground walking in stroke survivors. Ambulatory stroke survivors and controls walked at a preferred pace. We measured stride length and stride time variability, and accuracy and consistency of anti-phase gait coordination with phase coordination index (PCI). Stroke survivors showed increased stride length variability, stride time variability, and PCI compared with controls. Stride time variability but not stride length variability predicted 43% of the variance in PCI in the stroke group. Stride time variability emerged as a significant predictor of error and consistency of phase. Despite impaired spatial and temporal gait variability following stroke, increased temporal variability contributes to disrupted accuracy and consistency of gait coordination. We provide novel evidence that decline in gait coordination after stroke is associated with exacerbated stride time variability, but not stride length variability. Temporal gait variability may be a robust indicator of the decline in locomotor function and an ideal target for motor interventions that promote stable walking after stroke.
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影响因子：
4.2
作者：
Finley JM;Long A;Bastian AJ;Torres-Oviedo G
通讯作者：
Torres-Oviedo G
DOI：
10.1093/gerona/glw236
发表时间：
2017-08-01
影响因子：
5.1
作者：
James, Eric G.;Leveille, Suzanne G.;Bean, Jonathan F.
通讯作者：
Bean, Jonathan F.
影响因子：
2.4
作者：
Heredia-Jimenez, J.;Orantes-Gonzalez, E.;Soto-Hermoso, V. M.
通讯作者：
Soto-Hermoso, V. M.
DOI：
10.1016/j.jamda.2016.10.008
发表时间：
2017-04-01
影响因子：
7.6
作者：
Allali, Gilles;Launay, Cyrille P.;Beauchet, Olivier
通讯作者：
Beauchet, Olivier
影响因子：
1.8
作者：
James, Eric G.;Leveille, Suzanne G.;Bean, Jonathan F.
通讯作者：
Bean, Jonathan F.