Methods for estimating isometric recruitment curves of electrically stimulated muscle

• Published in: IEEE transactions on biomedical engineering Vol. 36; no. 7; pp. 654 - 667
• Main Authors: Durfee, W.K., MacLean, K.E.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.07.1989; Institute of Electrical and Electronics Engineers
• Subjects: Actuators; Amplitude modulation; Animals; Biological and medical sciences; Cats; Diseases of the nervous system; Electric Stimulation; Force control; In Vitro Techniques; Isometric Contraction; Mathematical Computing; Medical sciences; Muscle Contraction; Muscles; Muscles - physiology; Nerve fibers; Neural Conduction; Pulse width modulation; Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects); Recruitment; Recruitment, Neurophysiological; Space vector pulse width modulation; Testing; Fissipedia; Carnivora; Curve; Electric; Instrumentation therapy; Isometric muscular contraction; Stimulation; Nervous system; Experimental study; Striated muscle; Anterior tibial muscle; Recruitment; Biomechanics; Vertebrata; Mammalia; Animal; Cat; Gastrocnemius muscle; Technique; Comparative study
• ISSN: 0018-9294; 1558-2531
• DOI: 10.1109/10.32097

Three methods were tested experimentally in isolated tibialis anterior and medial gastrocnemius muscles of cats. The three methods are steady-state step response, peak impulse response, and deconvolved ramp response. A fourth method, described but not tested, is a stochastic iteration technique. The results demonstrate that estimations of recruitment curves depend on the method used and that all methods are sensitive to short-term and long-term time variations in muscle properties. While the step-response technique is the traditional method for estimating recruitment curves, the ramp-deconvolution method appears to offer acceptable accuracy with much shorter testing times.< >