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The paper deals with the dynamic analysis of human arm, determination of shoulder and elbow torques considering isotonic and isokinetic exercise activities. Using Lagrangian-Euler method for dynamic equation of motions, code in MATLAB are developed which can be used to give torques encountered at shoulder and elbow joints for the respective trajectories obtained for different cases. Video tracking and motion capture techniques are used and clippings are analysed using NexGen Ergomaster tool. The results obtained for isokinetic flexion are in tune with those obtained by other researcher.