The effect of walking speed on the gait of typically developing children

2008 ◽  
Vol 41 (8) ◽  
pp. 1639-1650 ◽  
Author(s):  
Michael H. Schwartz ◽  
Adam Rozumalski ◽  
Joyce P. Trost
Author(s):  
Goetschalckx M ◽  
◽  
Moumdjian L ◽  
Klingels K ◽  
Feys P ◽  
...  

We aimed to systematically summarize assessment methods of locomotion coordination of the lower limbs in children, and to discuss the influence of person and task on locomotor coordination. Two databases (PubMed, Web of Science) were screened, up to April 1th 2020. Five articles were included. Locomotor coordination was assessed in Typically Developing Children (TD) and children with autism in different domains of coordination, using angle-angle plots, planar covariance, continuous relative phase and point-phasing. In TD children: age influenced intersegmental covariance when walking, and stability of temporal and amplitude phasing when running. Intersegmental covariance was influenced by vision and walking speed. Phase relationship was not influenced by weighted walking in autistic children, nor in TD children when walking backwards.


2020 ◽  
pp. 030936462095686
Author(s):  
Jessica Zistatsis ◽  
Keshia M Peters ◽  
Daniel Ballesteros ◽  
Heather A Feldner ◽  
Kristie Bjornson ◽  
...  

Background: Children with hemiparesis are commonly prescribed ankle foot orthoses to help improve gait; however, these orthoses often result in only small and variable changes in gait. Research with adult stroke survivors has suggested that orthoses that extend beyond the ankle using long, passive tendon-like structures (i.e. exotendons) can improve walking. Objectives: The aim of this study was to quantify the impact of an exotendon-based exoskeleton on pediatric gait. Study design: Repeated-measures study. Methods: Two typically-developing children and two children with hemiparesis completed a gait analysis, walking without and with the exoskeleton. The exotendon was tested at three stiffness levels. Results: All children were able to walk comfortably with the exoskeleton, with minimal changes in step width. Walking speed increased and lower limb joint symmetry improved for the children with hemiparesis with the exoskeleton. Each participant had changes in muscle activity while walking with the exoskeleton, although the impact on specific muscles and response to exotendon stiffness varied. Conclusion: Exotendon-based exoskeletons may provide an alternative solution for optimizing gait in therapy and in the community for children with hemiparesis. Determining the optimal stiffness and configuration for each child is an important area of future research.


2020 ◽  
Vol 63 (4) ◽  
pp. 1071-1082
Author(s):  
Theresa Schölderle ◽  
Elisabet Haas ◽  
Wolfram Ziegler

Purpose The aim of this study was to collect auditory-perceptual data on established symptom categories of dysarthria from typically developing children between 3 and 9 years of age, for the purpose of creating age norms for dysarthria assessment. Method One hundred forty-four typically developing children (3;0–9;11 [years;months], 72 girls and 72 boys) participated. We used a computer-based game specifically designed for this study to elicit sentence repetitions and spontaneous speech samples. Speech recordings were analyzed using the auditory-perceptual criteria of the Bogenhausen Dysarthria Scales, a standardized German assessment tool for dysarthria in adults. The Bogenhausen Dysarthria Scales (scales and features) cover clinically relevant dimensions of speech and allow for an evaluation of well-established symptom categories of dysarthria. Results The typically developing children exhibited a number of speech characteristics overlapping with established symptom categories of dysarthria (e.g., breathy voice, frequent inspirations, reduced articulatory precision, decreased articulation rate). Substantial progress was observed between 3 and 9 years of age, but with different developmental trajectories across different dimensions. In several areas (e.g., respiration, voice quality), 9-year-olds still presented with salient developmental speech characteristics, while in other dimensions (e.g., prosodic modulation), features typically associated with dysarthria occurred only exceptionally, even in the 3-year-olds. Conclusions The acquisition of speech motor functions is a prolonged process not yet completed with 9 years. Various developmental influences (e.g., anatomic–physiological changes) shape children's speech specifically. Our findings are a first step toward establishing auditory-perceptual norms for dysarthria in children of kindergarten and elementary school age. Supplemental Material https://doi.org/10.23641/asha.12133380


2020 ◽  
Author(s):  
Steven Samuel

Research and thinking into the cognitive aspects of language evolution has usually attempted to account for how the capacity for learning even one modern human language developed. Bilingualism has perhaps been thought of as something to think about only once the ‘real’ puzzle of monolingualism is solved, but this would assume in turn (and without evidence) that bilingualism evolved after monolingualism. All typically-developing children (and adults) are capable of learning multiple languages, and the majority of modern humans are at least bilingual. In this paper I ask whether by skipping bilingualism out of language evolution we have missed a trick. I propose that exposure to synonymous signs, such as food and alarm calls, are a necessary precondition for the abstracting away of sound from referent. In support of this possibility is evidence that modern day bilingual children are better at breaking this ‘word magic’ spell. More generally, language evolution should be viewed through the lens of bilingualism, as this is the end state we are attempting to explain.


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