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Journal articles
A classification and calibration procedure for gesture specific home-based therapy exercise in young people with cerebral palsy
Abstract : CCBYNCNDMovement-based video games can provide engaging practice for repetitive therapeutic gestures towards improving manual ability in youth with cerebral palsy (CP). However, home-based gesture calibration and classification is needed to personalize therapy and ensure an optimal challenge point. Nineteen youth with CP controlled a video game during a 4-week home-based intervention using therapeutic hand gestures detected via electromyography and inertial sensors. The in-game calibration and classification procedure selects the most discriminating, person-specific features using random forest classification. Then, a support vector machine is trained with this feature subset for in-game interaction. The procedure uses features intended to be sensitive to signs of CP and leverages directional statistics to characterize muscle activity around the forearm. Home-based calibration showed good agreement with video verified ground truths (0.86±0.11, 95%CI=0.93-0.97). Across participants, classifier performance (F1-score) for the primary therapeutic gesture was 0.90±0.05 (95%CI=0.87-0.92) and, for the secondary gesture, 0.82±0.09 (95%CI=0.77-0.86). Features sensitive to signs of CP were significant contributors to classification and correlated to wrist extension improvement and increased practice time. This study contributes insights for classifying gestures in people with CP and demonstrates a new gesture controller to facilitate home-based therapy gaming.
Keywords :
Calibration
Cerebral palsy
Electromyography
Exercise therapy
Game
Games
Gestures
Machine learning
Medical treatment
Muscles
Support vector machines
Testing
Young adult
humans
adolescent
young adult
calibration
machine learning
game
calibration procedure
muscles
classification procedure
movement-based
medical treatment
exercise therapy
muscle activities
inertial sensor
random forest classification
hand
gestures
support vector machines
electromyography
games
cerebral palsy
testing
classifier performance
directional statistics
wrist joint
https://hal.archives-ouvertes.fr/hal-03059940
Contributor : Frédéric Davesne Connect in order to contact the contributor
Submitted on : Thursday, January 6, 2022 - 3:20:44 PM
Last modification on : Wednesday, January 19, 2022 - 8:38:40 AM
Contributor : Frédéric Davesne Connect in order to contact the contributor
Submitted on : Thursday, January 6, 2022 - 3:20:44 PM
Last modification on : Wednesday, January 19, 2022 - 8:38:40 AM
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