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Triceps Surae Stretch Reflex Modulation After a Mechanically Evoked Ankle Dorsiflexion During the Swing Phase of Human Running / Mikael Scohier in Motor control [périodique éléctronique], Vol.18, n°4 (2014)  

Public ISBD [article]  inMotor control [périodique éléctronique] > Vol.18, n°4 (2014) . - p. 383-394 Titre : Triceps Surae Stretch Reflex Modulation After a Mechanically Evoked Ankle Dorsiflexion During the Swing Phase of Human Running Type de document : document électronique Auteurs : Mikael Scohier ; D. De Jaeger ; B. Schepens Année de publication : 2014 Article en page(s) : p. 383-394 Langues : Français (fre) Mots-clés : locomotion  perturbation  exoskeleton Résumé : The purpose of this study was to mechanically evoke a triceps surae stretch reflex during the swing phase of running, to study its within-the-step phase dependency. Seven participants ran on a treadmill at 2.8 m·s–1 wearing an exoskeleton capable of evoking a sudden ankle dorsiflexion. We measured the electromyographic activity of the soleus, medial and lateral gastrocnemii just after the perturbation to evaluate the triceps surae stretch reflex. Similar perturbations were also delivered at rest. Our results showed that the stretch reflex was suppressed during the swing phase of running, except in late swing where a late reflex response was observed. At rest, all triceps surae muscles showed an early reflex response to stretch. Our findings suggest that the triceps surae short/medium-latency stretch reflex cannot be evoked during swing phase and thus cannot contribute to the control of the locomotor pattern after aperturbation during this phase En ligne : https://www.researchgate.net/profile/Benedicte_Schepens/publication/261520793_Tr [...] Permalink : ./index.php?lvl=notice_display&id=84534 [article] Triceps Surae Stretch Reflex Modulation After a Mechanically Evoked Ankle Dorsiflexion During the Swing Phase of Human Running [document électronique] / Mikael Scohier ; D. De Jaeger ; B. Schepens . - 2014 . - p. 383-394. Langues : Français (fre) in Motor control [périodique éléctronique] > Vol.18, n°4 (2014) . - p. 383-394 Mots-clés : locomotion  perturbation  exoskeleton Résumé : The purpose of this study was to mechanically evoke a triceps surae stretch reflex during the swing phase of running, to study its within-the-step phase dependency. Seven participants ran on a treadmill at 2.8 m·s–1 wearing an exoskeleton capable of evoking a sudden ankle dorsiflexion. We measured the electromyographic activity of the soleus, medial and lateral gastrocnemii just after the perturbation to evaluate the triceps surae stretch reflex. Similar perturbations were also delivered at rest. Our results showed that the stretch reflex was suppressed during the swing phase of running, except in late swing where a late reflex response was observed. At rest, all triceps surae muscles showed an early reflex response to stretch. Our findings suggest that the triceps surae short/medium-latency stretch reflex cannot be evoked during swing phase and thus cannot contribute to the control of the locomotor pattern after aperturbation during this phase En ligne : https://www.researchgate.net/profile/Benedicte_Schepens/publication/261520793_Tr [...] Permalink : ./index.php?lvl=notice_display&id=84534

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