| Summary: | 碩士 === 國立陽明大學 === 復健科技輔具研究所 === 92 === Background: Recovery of muscle strength is usually a necessary component in the rehabilitation program for patient with musculoskeletal problem. In clinic, isotonic and isokinetic equipments are commonly used to assist patients reconditioning their muscle function. Two problems exist in these two equipments, isotonic equipment can not be used to measure muscle’s force-time performance. Although isokinetic equipment provides function in measuring force-time performance, it can only be used to measure single joint motion. Objectives: The purpose of this study was to develop an electromechanical system that could be used to quantitatively measure muscle’s force-time and force-profile characteristics. Methods: Four major components were used in this system. Those were strain gauge, step-motor, signal conditioning circuit, and mental frame with pulleys and cables. User’s force output was measured by the strain gauge. Resistance was given by step-motor device. All input and output signal were processed by using PSOC microprocessor chip. A computer program with windows interface was designed for manipulation entire system. Eleven subjects voluntarily participated in this study. In order to validate examine the relationship between two systems’ outputs. Results: The system could be successively used to measure muscle isometric, isotonic and isokinetic contraction. Muscle test result obtained from Kin Com were significantly correlated with results obtained from our system (p<0.01). Discussions and conclusions: Electromechanical system developed in this study could be used in measuring muscle isometric, isotonic and isokinetic contraction. This system also can be used to measure force output from specific-movement; such as lower extremity’s sit-up stand movement, and upper extremity’s throwing movement.
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