Gerilovsky L, Struppler A, Velho F, Niehage O
Central Laboratory of Biophysics, Bulgarian Academy of Sciences, Sofia.
Electromyogr Clin Neurophysiol. 1990 Dec;30(8):459-67.
In order to analyse the EMG pattern during unloading of brachial biceps muscle, the interference EMG and single motor unit activity were investigated. The measurements were done on seven healthy subjects with two types of unloading techniques: a) active unloading, when the subjects resisted against an external load (10, 20, 30 and 40 N) which is suddenly released, and b) passive unloading, performed by low inertia torque motors with independently adjustable background extension and suddenly applied flexion torques. Following active unloading the silent period duration, the amplitude of the rebound and its segmentation into consecutive bursts is changing with initial load, whereas the silent period latency remains constant. Following passive unloading the acceleration influences predominantly the amplitude of the rebound, without changing its latency and silent period duration. The initial voluntary activity influences both silent period duration and rebound parameters (latency, amplitude and duration).
为了分析肱二头肌卸载过程中的肌电图模式，对干扰肌电图和单个运动单位活动进行了研究。对7名健康受试者采用两种卸载技术进行测量：a）主动卸载，即受试者抵抗突然释放的外部负荷（10、20、30和40 N）；b）被动卸载，由具有独立可调背景伸展和突然施加的屈曲扭矩的低惯性扭矩电机执行。主动卸载后，静息期持续时间、反弹幅度及其分割成连续爆发的情况随初始负荷而变化，而静息期潜伏期保持不变。被动卸载后，加速度主要影响反弹幅度，而不改变其潜伏期和静息期持续时间。初始自愿活动影响静息期持续时间和反弹参数（潜伏期、幅度和持续时间）。
