肌肉收缩速度对正常受试者、甲状腺毒症患者及黏液性水肿患者生理性震颤的影响。
Effect of speed of muscle contraction on physiological tremor in normal subjects and in patients with thyrotoxicosis and myxoedema.
作者信息
Marsden C D, Meadows J C, Lange G W
出版信息
J Neurol Neurosurg Psychiatry. 1970 Dec;33(6):776-82. doi: 10.1136/jnnp.33.6.776.
Abstract
The speed of the ankle jerk and physiological finger tremor in patients with thyrotoxicosis and myxoedema have been compared with those in age-matched control subjects. Tremor amplitude depends on the speed of muscle contraction; the faster muscle contracts the greater is the amplitude of tremor, and vice versa. The frequency of the dominant tremor peak is not affected by the speed of contraction but its size increases as muscle contracts faster. Muscle dynamics is clearly one of many factors influencing physiological tremor but is not responsible for the dominant frequency of tremor at round 9 c/sec.
摘要
对甲状腺毒症和黏液性水肿患者的跟腱反射速度和生理性手指震颤与年龄匹配的对照受试者进行了比较。震颤幅度取决于肌肉收缩速度；肌肉收缩越快，震颤幅度越大，反之亦然。主要震颤峰值的频率不受收缩速度的影响，但其大小随着肌肉收缩加快而增加。肌肉动力学显然是影响生理性震颤的众多因素之一，但不是导致约9次/秒的主要震颤频率的原因。
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