Muscle synergies in cerebral palsy and variability: challenges and opportunities

2021 ◽  
Author(s):  
Andrea d'Avella ◽  
Yury Ivanenko ◽  
Francesco Lacquaniti
Keyword(s):  
Cerebral Palsy ◽  
Muscle Synergies ◽  
Challenges And Opportunities

scholarly journals Muscle Synergies During Walking in Children With Cerebral Palsy: A Systematic Review

2020 ◽  
Vol 11 ◽  
Author(s):  
Annike Bekius ◽  
Margit M. Bach ◽  
Marjolein M. van der Krogt ◽  
Ralph de Vries ◽  
Annemieke I. Buizer ◽  
...  
Keyword(s):  
Systematic Review ◽  
Cerebral Palsy ◽  
Muscle Synergies ◽  
Children With Cerebral Palsy

scholarly journals Can You Hear Me Now? Augmentative Communication, Methodological Empowerment, and the Life Story of Jon Feucht

2011 ◽  
Vol 31 (4) ◽  
Author(s):  
Jennifer Flad ◽  
Ronald J. Berger ◽  
Jon Feucht
Keyword(s):  
Cerebral Palsy ◽  
Life History ◽  
Research Methodology ◽  
Life Story ◽  
Social Research ◽  
Augmentative Communication ◽  
Research Projects ◽  
Communication Device ◽  
Challenges And Opportunities ◽  
Communication Disability

<p>Keywords</p><p>augmentative communication, disability, biography, methodology</p><p>Abstract</p><p>Feminist social research and disability studies converge in arguing for a research methodology undertaken on behalf of and to empower research participants. Our research, an ongoing life history project with Jon Feucht, has been undertaken in this tradition. Throughout much of his life, Jon struggled with a severe speech disability due to cerebral palsy that significantly impaired his ability to communicate verbally with others. After acquiring a sophisticated augmentative communication device, Jon's life changed for the better. In this paper we describe the nature of augmentative communication, share some of Jon's thoughts about augmentative communication and people with disabilities, and explore some of the challenges and opportunities facing researchers collaborating on research projects with individuals who use augmentative communication to speak.</p>

scholarly journals Greater Reliance on Cerebral Palsy-Specific Muscle Synergies During Gait Relates to Poorer Temporal-Spatial Performance Measures

2021 ◽  
Vol 12 ◽  
Author(s):  
Yushin Kim ◽  
Thomas C. Bulea ◽  
Diane L. Damiano
Keyword(s):  
Cerebral Palsy ◽  
Muscle Activation ◽  
Step Length ◽  
Motor Dysfunction ◽  
Muscle Synergies ◽  
Muscle Coordination ◽  
Specific Level ◽  
Z Scores ◽  
Gait Abnormalities ◽  
Coordination Patterns

Children with cerebral palsy typically exhibit reduced complexity of muscle coordination patterns during walking; however, the specific patterns that characterize their gait abnormalities are still not well documented. This study aimed to identify the specific repertoire of muscle coordination patterns in children with CP during walking compared to same-aged peers without CP and their relationships to gait performance. To identify muscle coordination patterns, we extracted muscle synergies from 10 children with CP and 10 age-matched typically developing children (TD). K-mean clustering and discriminant analyses of all extracted synergies were used to group similar synergies. Then, weight-averaged z-scores were quantified for each cluster to determine their group-specific level. In this cohort, 10 of the 17 distinct clusters were largely CP-specific while six clusters were seen mainly in TD, and one was non-specific. CP-specific clusters generally showed merging of two TD synergies, excessive antagonist co-activation, decreased muscle activation compared to TD, and complex or atypical pattern. Significant correlations were found between weight-averaged z-scores and step length asymmetry, cadence asymmetry, self-selected treadmill speed and AP-COM displacement of the pelvis such that greater CP-specificity of muscle synergies was related to poorer performance, thus indicating that CP-specific synergies can influence motor dysfunction.

scholarly journals Muscle synergies and complexity of neuromuscular control during gait in cerebral palsy

2015 ◽  
Vol 57 (12) ◽  
pp. 1176-1182 ◽  
Author(s):  
Katherine M Steele ◽  
Adam Rozumalski ◽  
Michael H Schwartz
Keyword(s):  
Cerebral Palsy ◽  
Neuromuscular Control ◽  
Muscle Synergies

scholarly journals Muscle synergies demonstrate only minimal changes after treatment in cerebral palsy

2019 ◽  
Vol 16 (1) ◽  
Author(s):  
Benjamin R. Shuman ◽  
Marije Goudriaan ◽  
Kaat Desloovere ◽  
Michael H. Schwartz ◽  
Katherine M. Steele
Keyword(s):  
Cerebral Palsy ◽  
Muscle Synergies

scholarly journals Gait synergetic neuromuscular control in children with cerebral palsy at different gross motor function classification system levels

2019 ◽  
Vol 121 (5) ◽  
pp. 1680-1691 ◽  
Author(s):  
Yi Yu ◽  
Xiang Chen ◽  
Shuai Cao ◽  
De Wu ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Cerebral Palsy ◽  
Motor Function ◽  
Lower Limb ◽  
Classification System ◽  
Neuromuscular Control ◽  
Muscle Synergies ◽  
Gross Motor ◽  
Gross Motor Function ◽  
Gait Abnormalities ◽  
Semg Signals

Cerebral palsy (CP) is a neural developmental disease featured with gait abnormalities. CP gait assessment is usually performed with the Gross Motor Function Classification System (GMFCS) in clinics, which does not involve a thorough assessment of neuromuscular control. To understand how the neuromuscular control disorders lead to gait abnormalities, we explored the relationship between GMFCS levels and the gait synergetic control characteristics in this study. In total, 18 children with CP at different GMFCS levels (mean age: 4.41±1.30 yr) and 8 age-matched typically developing (TD) children (mean age: 4.43±1.36 yr) were recruited to perform a straight walking task, and the surface electromyographic (sEMG) signals from eight lower limb muscles on each side and accelerometer data were collected. A nonnegative matrix factorization method was applied to obtain the muscle synergies from the sEMG signals. Next, synergy structures were projected onto the basic gait synergies to test the completeness of those structures. Subsequently, synergy activation parameters, including total activation duration and coactivation index, were compared across the participants. This study showed that children with CP at GMFCS levels I and II and the TD children had similar synergy structures, but the synergy activations of these children with CP were different from those of TD children. In addition, similar to previous research, we also found that children with CP at GMFCS level III could not access all four basic synergies on both sides. Based on the synergy analysis results, a gait assessment paradigm was proposed to facilitate the clinical CP gait evaluation. NEW & NOTEWORTHY Understanding the mechanism of gait abnormality has important clinical significance for the diagnosis, prognosis, and possible treatment of motor dysfunction in children with cerebral palsy (CP). In this study, the comparisons of the lower limb muscle synergies among different groups of children with CP at different Gross Motor Function Classification System levels might provide some new insight into the mechanism underlying the gait disorder. In particular, the discrepancies of gait synergy structure and activation patterns across the study groups may indicate different neurophysiological and pathological attributes in different groups of patients.

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