Derivation of some parameters of myoelectric signals recorded during sustained constant force isometric contractions

摘要: Mathematical expressions are derived for some parameters of the myoelectric (ME) signal recorded during a constant force isometric contraction. The developed from stochastic model motor-unit action-potential trains obtained empirical results. following parameters: (a) mean rectified value, (b) integrated (c) root-mean-square and (d) power density spectrum described as functions contraction time an muscle calculated compared to their corresponding empirically measurements which have been reported in literature. A discussion on behavior increasing is presented. Synchronization shown pronounced effect signal. This result should be considered when analyzing long records signals.