患有脊髓脊膜膨出的婴儿在跑步机上行走时的肌肉激活模式。
Muscle activation patterns in infants with myelomeningocele stepping on a treadmill.
作者信息
Sansom Jennifer K, Teulier Caroline, Smith Beth A, Moerchen Victoria, Muraszko Karin, Ulrich Beverly D
机构信息
Developmental Neuromotor Control Laboratory, School of Kinesiology, University of Michigan, Ann Arbor, Michigan 48109, USA.
出版信息
Pediatr Phys Ther. 2013 Fall;25(3):278-89. doi: 10.1097/PEP.0b013e31828dc3b6.
PURPOSE
To characterize how infants with myelomeningocele (MMC) activate lower limb muscles over the first year of life, without practice, while stepping on a motorized treadmill.
METHODS
Twelve infants with MMC were tested longitudinally at 1, 6, and 12 months. Electromyography was used to collect data from the tibialis anterior, lateral gastrocnemius, rectus femoris, biceps femoris.
RESULTS
Across the first year, infants showed no electromyographic activity for approximately 50% of the stride cycle with poor rhythmicity and timing of muscles, when activated. Single muscle activation predominated; agonist-antagonist coactivation was low. Probability of individual muscle activity across the stride decreased with age.
CONCLUSIONS
Infants with MMC show high variability in timing and duration of muscle activity, few complex combinations, and very little change over time.
目的
描述患有脊髓脊膜膨出（MMC）的婴儿在一岁以内，在没有练习的情况下，在电动跑步机上行走时如何激活下肢肌肉。
方法
对12名患有MMC的婴儿在1个月、6个月和12个月时进行纵向测试。使用肌电图从胫前肌、腓肠外侧肌、股直肌、股二头肌收集数据。
结果
在第一年中，婴儿在大约50%的步幅周期中没有肌电活动，肌肉的节律性和时机较差，即使被激活也是如此。单一肌肉激活占主导；主动肌-拮抗肌共同激活程度较低。随着年龄增长，步幅中单个肌肉活动的概率降低。
结论
患有MMC的婴儿在肌肉活动的时机和持续时间上表现出高度变异性，很少有复杂的组合，并且随着时间推移变化很小。
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