The Effect Of MU Recruitment On Diagnosis Of Chronic Deinnervation Lesion During Isometric Muscle Contraction

Background and ObjectiveMotor unit (MU) recruitment is referred to the process by which different motor units are activated to produce a given level and type of muscular contraction. MU recruitment conformed to the size principle of Henneman: the earlier recruited, the smaller MUs activated during the motor units recruitment in lower levels of isometric muscle contraction, while the later recruited, the larger MUs activated during higher force levels. Most of the studies on MU recruitment were associated with the control mechanisms on the active human MUs during voluntary muscle contraction. In the diagnosis of chronic deinnervation with assistance of motor unit potential (MUP) parameters, a few studies have been based on clinical application. Quantitative MUP analysis is one of the most important and widely used technique in clinical neurophysiological studies. However, the methods employed in different medical centers in the quantitative analysis have been different in many aspects, the...