Disturbance of neural coupling between upper and lower limbs during gait transition
Disturbance of neural coupling between upper and lower limbs during gait transition
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步态转换过程中上下肢神经耦合的紊乱
DOI：
10.1016/j.neulet.2021.136100
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发表时间：
2021
影响因子：
2.5
通讯作者：
Kouzaki Motoki
中科院分区：
文献类型：
--
作者：
Kibushi Benio;Kihira Naoto;Moritani Toshio;Kouzaki Motoki
随着运动速度的改变，人类自发地在行走和跑步之间交替，这是一种特殊的步态转换。已经有人提出，肌肉中的感觉信息是触发步态转变的一个因素；然而，这一点的直接证据还没有提出。此外，由于上肢和下肢之间的神经耦合，人们认为步态中的上肢运动促进了腿部肌肉的活动。我们假设，在上肢和下肢之间的神经耦合中，传入输入的干扰抑制了步态转换。在此，我们旨在加深对上肢和下肢之间神经耦合中的传入输入对步态转换的贡献的理解。8名参与者在两种不同的情况下进行了自发的步行到跑步和跑步到步行的转换：正常(手臂正常摆动)和TIS(通过诱导止血带缺血部分阻断手臂的传入输入)。我们比较了两种情况下的最佳步态转换速度(PTS)、关节角度、肌肉活动和肌肉协同作用。可以通过分析肌肉协同效应来研究协调肌肉活动的控制，肌肉协同效应是一组共同激活的肌肉。不同情况下的PTS、关节角度分布、肌肉活动度分布和肌肉协同作用基本相同(正常和TIS步行到跑步PTS分别为6.9%±0.04和6.9%±0.40公里/小时；跑步到步行PTS为6.6%±0.04%和6.5%±0.04%KM/h；p=0.869和p=0.402)。因此，我们得出结论，通过减少前臂和上臂远端的传入输入，干扰上肢和下肢之间的神经耦合，对步态转换的控制几乎没有影响。我们的发现可能反映了运动过程中上肢和下肢之间的神经耦合对神经干扰或干扰的健壮性。
Humans spontaneously alternate between walking and running with a change in locomotion speed, which is termedgait transition. It has been suggested that sensory information in the muscle is a factor that triggers the gait transition; however, direct evidence for this has not been presented. In addition, it has been suggested that upper limb movement during human gait facilitates leg muscle activity due to the neural coupling between the upper and lower limbs. We hypothesized that a disturbance of afferent inputs in the neural coupling between the upper and lower limbs suppressively act on the gait transition. Here, we aimed to deepen the understanding of contribution of the afferent inputs in neural coupling between the upper and lower limbs to the gait transition. Eight participants performed spontaneous walk-to-run and run-to-walk transitions under two different conditions: Normal (arms swinging normally); and TIS (partial blocking of afferent inputs from the arms by inducing tourniquet ischemia). We compared the preferred gait transition speeds (PTS), joint angles, muscle activities, and muscle synergies between the two conditions. Control of coordinated muscle activities can be investigated by analyzing muscle synergies, which are groups of muscles that activate together. The PTS, joint angle profiles, muscle activity profiles, and muscle synergies were nearly identical between conditions (walk-to-run PTS at Normal and TIS: 6.9 ± 0.4 and 6.9 ± 0.4 km/h; run-to-walk PTS at Normal and TIS: 6.6 ± 0.4 and 6.5 ± 0.4 km/h;p= 0.869 andp= 0.402, respectively). Therefore, we conclude that the control of gait transition is little affected by disturbing the neural coupling between the upper and lower limbs by reducing afferent inputs from the forearms and distal upper arms. Our findings might reflect robustness of the neural coupling between the upper and lower limbs during locomotion against neural perturbations or disturbances.
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步行和跑步之间首选过渡步态速度下的能量消耗和步幅持续时间变化。
DOI：
--
发表时间：
1996
期刊：
Canadian Journal of Applied Physiology
影响因子：
--
作者：
J. Brisswalter;Denis Mottet
通讯作者：
Denis Mottet
影响因子：
4.1
作者：
Oku，Takanori;Furuya，Shinichi
通讯作者：
Furuya，Shinichi
影响因子：
2.9
作者：
Hagio S;Fukuda M;Kouzaki M
通讯作者：
Kouzaki M
影响因子：
3.2
作者：
M. P. Murray;S. B. Sepic;E. J. Barnard
通讯作者：
E. J. Barnard
在存在或不存在肌梭感觉反馈的情况下小鼠运动模式的模块化组织
DOI：
10.1113/jp277515
发表时间：
2019
期刊：
The Journal of Physiology
影响因子：
--
作者：
Santuz A;Akay T;Mayer WP;Wells TL;Schroll A;Arampatzis A
通讯作者：
Arampatzis A