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A data-acquisition system for the analysis of the isometric tension generated by an electrically stimulated skeletal muscle

The system is designed for data-acquisition and computation of a relatively large number of parameters of a single twitch or tetanic contraction generated by an electrically stimulated skeletal muscle. The parameters that can be computed using the program facilities are: (i) the rise time (Tc), 50% relaxation time (50% Tr) and the maximum tension (Pt) of the twitch contraction; (ii) the approximate number of motor units innervating the muscle and the fatigue index; (iii) the fusion frequency of the tetanic contraction and the twitch to tetanus ratio; (iv) the maximum tetanic tension (P0) and its Tc and 50% Tr; (v) the P0 versus muscle length diagram; (vi) the fatigue-time course.