Journal of the Society of Biomechanisms
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Volume 47, Issue 3
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Paper
  • Smoothness Evaluation by Hand Trajectory of Box and Block Test During Recovery Process of Stroke Patients
    Tokio SAKAKIBARA, Yuji OHGI
    2023 Volume 47 Issue 3 Pages 172-179
    Published: 2023
    Released on J-STAGE: September 08, 2023
    DOIhttps://doi.org/10.3951/sobim.47.3_172
    JOURNAL FREE ACCESS
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    The authors measured hand trajectories of stroke patients during the Box and Block Test (BBT) and calculated those jerks during the carrying phase when the patient was carrying each block between pinch and release. The patients were requested to repeat same measurements after a certain period of time. The similarity between the ideal jerk time series and the real experimental jerk time series was identified by the smoothness index (mDtwq) based on the dynamics warping method. The results showed that mDtwq of the trajectory in BBT decreased during the recovery period. Significant differences were also observed in the equivalence of variance of mDtwq. In addition, variability of mDtwq also decreased, which indicated the trajectory of carrying movement in BBT changed smoother than that of earlier stage test.
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