Role of support afferentation in control of the tonic muscle activity
Role of support afferentation in control of the tonic muscle activity
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DOI：
10.1016/j.actaastro.2006.08.010
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发表时间：
2007-02-01
影响因子：
3.5
通讯作者：
Melnik, K. A.
中科院分区：
文献类型：
--
作者：
Kozlovskaya, I. B.;Sayenko, I. V.;Melnik, K. A.
本文总结了支持传入在控制紧张性肌肉系统的功能组织中起主导作用的实验研究结果。结果表明，在过渡到无支撑状态之后，姿势(伸)肌的横向僵硬和最大自愿力显着下降，限制了它们参与运动，而增加了对相肌的参与。在无支撑条件下对足底支撑区进行机械刺激，可消除上述所有影响，包括姿势肌横向刚度和最大自主力的变化，从而失去姿势肌对运动活动的影响。建议支持传入，促进(有支持)或抑制(没有支持)紧张性运动单位(MU)活动，确定姿势协同的协调模式，确保矫正姿势反应的最佳策略。(C)2006爱思唯尔有限公司。保留所有权利。
The paper summarizes the results of experimental studies advocating for the leading role of support afferentation in control of the functional organization of the tonic muscle system. It is shown that transition to supportless conditions is followed by a significant decline of transverse stiffness and maximal voluntary force of postural (extensor) muscles limiting their participation in locomotion and increasing involvement of phasic muscles. Mechanical stimulation of the support zones of the soles under the supportless conditions eliminates all the above-mentioned effects, including changes in transverse stiffness and maximal voluntary forces of postural muscles, and consequent loss of influence of postural muscles in the locomotor activity. It is suggested that support afferentation, facilitating (support is present) or suppressing (support is absent) the tonic motor units (MUs) activities, defines the coordination patterns of postural synergies, and ensures the optimal strategy of corrective postural responses. (c) 2006 Elsevier Ltd. All rights reserved.