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Fig. 4 | Journal of NeuroEngineering and Rehabilitation

Fig. 4

From: Physiological and kinematic effects of a soft exosuit on arm movements

Fig. 4

Effect on joint kinematics. a Typical sequence of flexion/extension movements performed by a participant in a session with a peak velocity of 42 deg/s. Shaded areas indicate the standard deviation around the mean trajectory. b Trajectories for the unpowered and powered conditions, averaged over repetitions, for one subject and at the three tested velocities (from top to bottom: 42, 84 and 126 deg/s); as the velocity increases, the accuracy of the powered condition decreases. c Average accuracy, measured through the coefficient of determination, r2, between the reference and measured trajectory of the elbow in the unpowered and powered condition. The overall mean, averaged over subjects and velocities, indicate that the assistance from the exosuit significantly (p = 8×10−5) reduces a subject’s capacity to follow a reference motion. d A similar trend was found for the smoothness of movement, measured with the SPARC index [50]. Assistance from the exosuit significantly reduces movement smoothness (−3.4%, p = 2×10−13). Error bars show the standard error of the mean

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