Motor control in Down syndrome: The role of adaptation and practice

Latash, Mark L.

doi:10.1007/bf01046967

Cited by 85 publications

(41 citation statements)

References 64 publications

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“…En effet, la lenteur des mouvements s'explique par une phase de décélération plus longue lors de la trajectoire dévoilant plusieurs unités de mouvement (une unité de mouvement se calculant sur la base des profils de vitesse : compris entre une phase d'accélération et de décélération). Pour Latash (1992), la lenteur décisionnelle et motrice est envisagée comme une stratégie adaptée afin de pallier à des déficits au niveau des mécanismes perceptivo-moteurs élémentaires. Ces sujets seraient ainsi contraints à la lenteur du fait de la nécessité d'utiliser leur attention dans la vérification incessante des mouvements qui demeurent désordonnés et peu efficaces.…”

Section: Acquisition De L'écritureunclassified

Étude de l’écriture chez des adultes porteurs de trisomie 21

Tsao

Velay

Barbier

et al. 2012

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L’objectif de cette recherche est d’étudier l’écriture chez des adultes porteurs de trisomie 21 (T21) en analysant conjointement la qualité des tracés et les propriétés temporelles des mouvements afin d’extraire les mécanismes de programmation motrice et de contrôle du geste sous-jacents. Les productions d’adultes porteurs de T21 (n = 7) ont été comparées à celles d’enfants tout-venant de même âge de développement (n = 8) et d’adultes tout-venant de même âge réel (n = 8). Les résultats indiquent que la qualité des tracés et les temps de production des adultes avec T21 se caractérisent par un niveau d’efficience comparable au groupe d’enfants tout-venant de même âge de développement. Les adultes avec T21 ne présentent pas de déficit graphomoteur spécifique (au niveau de la fonction motrice de l’écriture).The aim of this research was to study handwriting in adults with Down syndrome (DS) by analysing quality product and kinematic movement in order to investigate the underlying process. The copy productions of DS participants (n = 7) were compared to children matched on mental age (n = 8) and adults matched on chronological age (n = 8). DS handwriting was relatively similar to that of the mental age control group. Results revealed that adults with DS are capable of producing acceptable writing and did not show specific deficit

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Section: Acquisition De L'écritureunclassified

Étude de l’écriture chez des adultes porteurs de trisomie 21

Tsao

Velay

Barbier

et al. 2012

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“…A soothing environment that offers satisfaction and is favorable to the development of the activity helps the motor performance in DS to become qualitatively and quantitatively indistinguishable from the 'normal'. Therefore, one of the goals of the practice of hippotherapy by individuals with DS should be the establishment of a feeling of confidence during the activity, so that they understand what kind of action is suitable for the motor task (Latash, 1992). The same applies to individuals with DS submitted to hippotherapy in this study when we evaluate the three different tasks during the session, which correspond to different types of soil (dirt track and gravel).…”

Section: Acta Scientiarum Health Sciencesmentioning

confidence: 99%

<b>Electromyographic evaluation of the lower limbs of patients with Down syndrome in hippotherapy

Ribeiro

Espíndula

Ferreira

et al. 2017

Acta Sci. Health Sci.

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ABSTRACT. Hippotherapy is a therapeutic method that uses the horse's movement to achieve functional results in practitioners with Down syndrome (DS), who present motor and neurophysiological changes that affect the musculoskeletal system. Evaluating the motor behavior related to the control and the improvement of muscle activation in practitioners with Down syndrome subjected to hippotherapy. 10 practitioners were divided into two groups: Down Group (DG) -practitioners with DS, and Healthy Group (HG) -practitioners with no physical impairment. The muscles gluteus medius, tensor fasciae latae, rectus femoris, vastus medialis, vastus lateralis, biceps femoris, tibialis anterior and gastrocnemius were evaluated by electromyography using gross RMS values, which correspond to muscle activation; the evaluations were performed on the 1 st and 10 th hippotherapy sessions (frequency: once a week), and after 2 months interval without treatment, they were performed on the 1 st and 10 th hippotherapy sessions (frequency: twice a week). It was noted that activation of the studied muscles increased with the passing of sessions, regardless the weekly frequency of attendance; however, the period without treatment resulted in reduction of this effect. Practitioners with DS presented satisfactory changes in muscle activation pattern, in learning and in motor behavior during hippotherapy sessions.Keywords: muscle activation, electromyography, hippotherapy, Down syndrome, equine assisted therapy.Avaliação eletromiográfica dos membros inferiores de pacientes com síndrome de Down na equoterapia RESUMO. Equoterapia é um método terapêutico que utiliza o movimento do cavalo para alcançar resultados funcionais, realizada em praticantes com síndrome de Down (SD), que apresentam alterações neurofisiológicas e motoras que afetam o sistema musculoesquelético. Avaliar o comportamento motor relacionado ao controle e melhora a ativação muscular em praticantes com SD submetidos ao tratamento equoterapêutico. Participaram dez praticantes divididos em dois grupos: grupo Down (GD) -praticantes com SD, e grupo Saudável (GS) -praticantes sem comprometimento físico. Os músculos glúteo médio, tensor da fáscia lata, reto femoral, vasto medial, vasto lateral, bíceps femoral, tibial anterior e gastrocnêmio foram avaliados por meio da eletromiografia, utilizando o valor de RMS bruto que corresponde à ativação muscular, e as avaliações foram realizadas na primeira e décima sessões de equoterapia (frequência: 01 vez por semana); e após intervalo de dois meses sem tratamento, foi realizada na primeira e décima sessões de equoterapia (frequência: 02 vezes por semana). Observou-se que a ativação muscular dos músculos estudados aumentou com o passar das sessões, independente da frequência semanal de atendimento; mas o período sem tratamento resultou em redução deste efeito. Os praticantes com SD apresentaram mudanças satisfatórias no padrão de ativação muscular, na aprendizagem e no comportamento motor no decorrer das sessões de equoterapia.Palavras-chave: ativa...

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“…Although clumsiness is a broad term that is not well defi ned (Latash, 2000), there are certain motor features that give an overall impression of poor coordination or clumsiness. These include a variable and delayed pattern of motor development, defi cits in tasks involving balance, speed and visuo-motor control (Connolly & Michael, 1986;Harris, 1983), bilateral coordination (Jobling & Mon-Williams, 2000), and hypotonia (Anson, 1992).…”

Section: Introductionmentioning

confidence: 99%

Performing movement sequences with knowledge of results under different visual conditions in adults with Down syndrome

Virji‐Babul¹,

Lloyd²,

Gyn³

2003

Downs Syndr. Res. Pract.

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-The purpose of this study was to examine the learning of movement sequences in individuals with Down syndrome under different visual information conditions. 10 adults with Down syndrome and 14 neurologically typical adults performed a sequence of movements under two different visual information conditions: full visual feedback of the limb and environment and no visual feedback of the limb. Participants were given knowledge of results of their total movement time after each trial. The entire task was presented as a game and movement time information was given as a "score" after each trial. Participants were also given verbal encouragement throughout the task. As expected, individuals with Down syndrome had significantly slower reaction and movement times than neurologically typical participants. Interestingly, however, mean reaction and movement time was not affected by the visual condition, in either group. Participants with Down syndrome improved their performance over the presented trials, in both visual information conditions. These findings indicate that providing knowledge of results of movement performance can facilitate the performance and coordination of movement sequences even under conditions where visual information of the moving limb is restricted.

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Motor control in Down syndrome: The role of adaptation and practice

Cited by 85 publications

References 64 publications

Étude de l’écriture chez des adultes porteurs de trisomie 21

Étude de l’écriture chez des adultes porteurs de trisomie 21

<b>Electromyographic evaluation of the lower limbs of patients with Down syndrome in hippotherapy

Performing movement sequences with knowledge of results under different visual conditions in adults with Down syndrome

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