Electromyographic developmental changes in one individual from newborn stepping to mature walking
Electromyographic developmental changes in one individual from newborn stepping to mature walking
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DOI：
10.1016/s0966-6362(02)00049-8
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发表时间：
2003-02-01
期刊：
影响因子：
2.4
通讯作者：
Andrew, PD
中科院分区：
文献类型：
--
作者：
Okamoto, T;Okamoto, K;Andrew, PD
对女孩出生后 3 周至 7 岁时进行下肢肌电图 (EMG) 记录，以确定人类双足运动发育过程中的肌电图变化。记录取自胫骨前肌 (TA)、腓肠肌外侧 (LG)、股内侧肌 (VM)、股直肌 (RF)、股二头肌 (1317) 和臀大肌。在步态的三个发育阶段，即原始行走、支撑行走和独立行走中，肌肉活动从相互对抗的过度共同收缩发展到相互模式。对于站立肢，出现的主要交互模式是位于后方的 LG 和 BF 的连续活动，而不是位于前方的 TA 和 RF。在独立行走中，LG 和 BF 在站立阶段维持活动的优势在行走的前 2 年逐渐减弱，转向集中爆发活动。在这个女孩身上观察到的发育变化似乎归因于反映力量增加的姿势变化和反映神经成熟的平衡控制的改善。 (C) 2002 Elsevier Science B.V. 保留所有权利。
Electromyographic (EMG) recordings of the lower limbs were made from a girl from 3 weeks after birth until 7 years of age to determine EMG changes in the development of human bipedal locomotion. Recordings were taken from the tibialis anterior (TA), lateral gastrocnemius (LG), vastus medialis (VM), rectus femoris (RF), biceps femoris (1317), and gluteus maximus muscles. In each of three developmental stages of gait, primitive walking, supported walking, and independent walking, muscle activity progressed from excessive co-contraction of mutual antagonists to reciprocal patterns. For the stance limb, the predominant reciprocal pattern to emerge was continuous activity of the posteriorly located LG and BF as opposed to the anteriorly located TA and RF. In independent walking this preponderance of maintained activity by the LG and BF in stance phase gradually waned over the first 2 years of walking to focused bursts of activity. The developmental changes observed in this girl appear to have been attributable to changes in posture reflecting increased strength and to improvements in control of balance reflecting neuromaturation. (C) 2002 Elsevier Science B.V. All rights reserved.