Yu Hashiguchi1, Koji Ohata, Sayuri Osako, Ryosuke Kitatani, Yumi Aga, Mitsuhiro Masaki, Shigehito Yamada. 1. Department of Physical Therapy (Mr Hashiguchi), Faculty of Health Science, Gunma Paz University, Gunma, Japan; Department of Physical Therapy (Drs Ohata and Yamada), Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto, Japan; Kuretake Special Support School and Kita Special Support School (Ms Osako), Kyoto, Japan; Kansai Rehabilitation Hospital (Dr Kitatani), Osaka, Japan; Aijinkai Rehabilitation Hospital (Ms Aga), Osaka, Japan; Department of Physical Therapy (Dr Masaki), Niigata University of Health and Welfare, Niigata, Japan.
Abstract
PURPOSE: Children with cerebral palsy have motor dysfunctions, which are mainly associated with the loss of motor coordination. For the assessment of motor coordination, muscle synergies calculated by nonnegative matrix factorization have been investigated. However, the characteristics of muscle synergies in children with cerebral palsy are not understood. METHODS: This study compared the number of muscle synergies during gait between children with cerebral palsy and children with typical development and clarified whether certain clinical parameters differed according to the number of synergies. RESULTS: Children with cerebral palsy had significantly fewer synergies than children developing typically. The extent of spasticity and gait kinetics differed according to the number of synergies. CONCLUSION: Increases in the number of synergies are limited by severe spasticity. The muscle synergies calculated by nonnegative matrix factorization have the potential to enable the quantification of motor coordination during gait.
PURPOSE:Children with cerebral palsy have motor dysfunctions, which are mainly associated with the loss of motor coordination. For the assessment of motor coordination, muscle synergies calculated by nonnegative matrix factorization have been investigated. However, the characteristics of muscle synergies in children with cerebral palsy are not understood. METHODS: This study compared the number of muscle synergies during gait between children with cerebral palsy and children with typical development and clarified whether certain clinical parameters differed according to the number of synergies. RESULTS:Children with cerebral palsy had significantly fewer synergies than children developing typically. The extent of spasticity and gait kinetics differed according to the number of synergies. CONCLUSION: Increases in the number of synergies are limited by severe spasticity. The muscle synergies calculated by nonnegative matrix factorization have the potential to enable the quantification of motor coordination during gait.
Authors: Annike Bekius; Margit M Bach; Marjolein M van der Krogt; Ralph de Vries; Annemieke I Buizer; Nadia Dominici Journal: Front Physiol Date: 2020-07-02 Impact factor: 4.566
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