Influence of standardized activities on validity of assessment of capacity for myoelectric control
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Influence of standardized activities on validity of Assessment of Capacity for Myoelectric Control. Helen Y. N. Lindner, MSc; Ann-Christin Eliasson, PhD; Liselotte M. N. Hermansson, PhD. Aim

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Influence of standardized activities on validity of Assessment of Capacity for Myoelectric Control

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Influence of standardized activities on validity of Assessment of Capacityfor Myoelectric Control

Helen Y. N. Lindner, MSc; Ann-Christin Eliasson, PhD; Liselotte M. N. Hermansson, PhD


  • Aim

    • Develop standardized activities for Assessment of Capacity for Myoelectric Control (ACMC) and examine influence of these activities on validity of ACMC.

  • Relevance

    • ACMC is an observation-based clinical tool that evaluates ability to control myoelectric prosthetic hand during bimanual activities.


Method

  • 6 activities were standardized for ACMC:

    • Repotting plant, ready-to-assemble project, setting table for 4 persons, mixing store-bought cake/pudding mix, sorting bills or pictures, packing suitcase.

  • Subjects performed 3 standardized activities.

    • Upper-limb myoelectric prosthesis users (47 congenital, 11 acquired).

  • Bias-interaction analysis in many-facet Rasch model identified inconsistent patterns:

    • In interactions of individual users and activity facets.

    • Between activities and user characteristics.


Results

  • Standardized activities did not significantly influence measures of user ability.

  • Activities functioned similarly across:

    • Both sexes.

    • Both prosthetic sides.


Conclusion

  • Results:

    • Provide evidence for validity of ACMC across standardized activities.

    • Support use of ACMC in prosthesis users of both sexes and prosthetic sides.

  • Newly standardized activities are recommended for future ACMC use.


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