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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 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.