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

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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  1. 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

  2. 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.

  3. 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.

  4. Results • Standardized activities did not significantly influence measures of user ability. • Activities functioned similarly across: • Both sexes. • Both prosthetic sides.

  5. 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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