Hallemans Ann, Dhanis Lin, De Clercq Dirk, Aerts Peter
Functional Morphology Laboratory, University of Antwerp, Antwerp, Belgium.
J Mot Behav. 2007 May;39(3):227-38. doi: 10.3200/JMBR.39.3.227-240.
Insight into neuromuscular control of movement is gained through an understanding of the mechanical causes of movement. Data on new walkers' net joint moments is scarce, however, although those moments can be considered the direct cause of movement. The authors' goal in this research project was to characterize net joint moments in toddlers (N = 10) during the first 5 months of independent walking and to discuss their role in mechanical control of walking. The authors modeled leg segments as oscillating pendulums fixed at the proximal joint and investigated the relationship between force and movement. Their investigation revealed that at the onset of independent gait, walking was primarily hip driven. Furthermore, the toddlers seemed to experience problems in uncoupling active and passive control around the joints. Changes in mechanical control of walking were observed after 3 to 4 months of independent walking. The changes were more obvious at the hip and the knee joint than at the ankle.
通过了解运动的力学原因，可以深入了解运动的神经肌肉控制。然而，关于刚学会走路的人的净关节力矩的数据很少，尽管这些力矩可被视为运动的直接原因。本研究项目中作者的目标是描述幼儿（N = 10）在独立行走的前5个月中的净关节力矩，并讨论它们在步行力学控制中的作用。作者将腿部节段建模为固定在近端关节处的摆动摆，并研究了力与运动之间的关系。他们的研究表明，在独立步态开始时，行走主要由髋关节驱动。此外，幼儿在分离关节周围的主动和被动控制方面似乎存在问题。在独立行走3至4个月后，观察到步行力学控制的变化。这些变化在髋关节和膝关节处比在踝关节处更明显。
