Organization of segmental reflexes in trained dancers

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Deutscher übersetzter Titel:Segmentreflexverhalten bei trainierten Tänzern
Autor:Koceja, D.M.; Burke, J.R.; Kamen, G.
Erschienen in:International journal of sports medicine
Veröffentlicht:12 (1991), 3, S. 285-289, Lit.
Format: Literatur (SPOLIT)
Publikationstyp: Zeitschriftenartikel
Medienart: Gedruckte Ressource Elektronische Ressource (online)
Sprache:Englisch
ISSN:0172-4622, 1439-3964
DOI:10.1055/s-2007-1024682
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Erfassungsnummer:PU199112050550
Quelle:BISp

Abstract

Unilateral and conditioned Achilles tendon tap reflex (ATR) characteristics were examined in a group of skilled dancers and a group of sedentary, untrained subjects (n=7/group). For the conditioned reflex, the right ATR was conditioned by a tap to the left Achilles tendon using intervals of 10, 40, 70, 100, 130, 160 and 190 ms. Peak isometric force, concentration time and half-relaxation time were examined on each trial. The results indicated that the trained dancers exhibited less unilateral isometric force and longer half-relaxation times (p<0.05) than the untrained subjects. Moreover, the contralateral conditioning stimulus caused a more marked short-latency facilitation as well as a long-latency inhibition in the reflex force characteristics for the trained dancers when compared with the untrained subjects. These differences in both simple and conditioned reflexes in individuals trained for dance activities may reflect differences in muscle stiffness, tissue compliance or neural organization. Verf.-Referat