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首页> 外文期刊>The European Journal of Neuroscience >Human walking along a curved path. II. Gait features and EMG patterns.
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Human walking along a curved path. II. Gait features and EMG patterns.

机译：人类沿着弯曲的路径行走。二。步态特征和EMG模式。

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摘要

We recorded basic gait features and associated patterns of leg muscle activity, occurring during continuous body progression when humans walked along a curved trajectory, in order to gain insight into the nervous mechanisms underlying the control of the asymmetric movements of the two legs. The same rhythm was propagated to both legs, in spite of inner and outer strides diverging in length (P < 0.001). There was a phase lag in limb displacement between the inner and outer leg of 7% of the total cycle duration (P = 0.0001). Swing velocity was greater for outer than inner foot (P < 0.001). The duration of the stance phase diminished and increased in the outer and inner leg (P < 0.01), respectively, and was associated with trunk leaning toward the inside of the path. Muscle activity was not dramatically altered during curved walking. The amplitude of soleus burst during stance increased in the outer (P < 0.05) and decreased in the inner leg (P < 0.05), without changes in timing. Tibialis anterior activityincreased in both legs during the swing phase (P < 0.05); it was advanced on the outer and delayed on the inner side (P < 0.01; 2% of the cycle). The peroneus longus burst decreased in both legs, but more in the inner than the outer leg, and lasted longer in the inner leg at the onset of swing. Closing the eyes did not affect the gait pattern and muscle activity during turning. The command to walk along a curved path may exploit the basic mechanisms of the spinal locomotor generator, thereby limiting the computational cost of turning.
机译：我们记录了基本步态特征和腿部肌肉活动的相关模式，当人们沿着弯曲的轨迹行走时，这些步态在连续的身体前进过程中发生，以便深入了解控制两条腿不对称运动的神经机制。尽管内步和外步的长度有所不同，但相同的节奏传播到了双腿（P <0.001）。内腿和外腿之间的肢体位移存在相位滞后，占总周期持续时间的7％（P = 0.0001）。外脚的挥杆速度大于内脚的挥杆速度（P <0.001）。站立阶段的持续时间在外腿和内腿分别减小和增加（P <0.01），并且与躯干向路径内侧倾斜有关。在弯曲的步行过程中，肌肉活动没有明显改变。站立时比目鱼肌爆发的幅度在外侧增加（P <0.05），而在内侧腿则减小（P <0.05），而不会改变时间。摆动阶段双腿胫骨前部活动增加（P <0.05）;它在外侧前进，在内侧前进（P <0.01;该周期的2％）。摆动开始时，双腿腓骨长突减少，但内侧比外侧小，但持续时间更长。闭眼不会影响转弯时的步态和肌肉活动。沿着弯曲路径行走的命令可能会利用脊髓运动产生器的基本机制，从而限制了转弯的计算成本。

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