AbstractThe paper summarizes the results of experimental studies advocating for the leading role of support afferentation in control of the functional organization of the tonic muscle system. It is shown that transition to supportless conditions is followed by a significant decline of transverse stiffness and maximal voluntary force of postural (extensor) muscles limiting their participation in locomotion and increasing involvement of phasic muscles. Mechanical stimulation of the support zones of the soles under the supportless conditions eliminates all the above-mentioned effects, including changes in transverse stiffness and maximal voluntary forces of postural muscles, and consequent loss of influence of postural muscles in the locomotor activity. It is suggested that support afferentation, facilitating (support is present) or suppressing (support is absent) the tonic motor units (MUs) activities, defines the coordination patterns of postural synergies, and ensures the optimal strategy of corrective postural responses.
Role of support afferentation in control of the tonic muscle activity
Acta Astronautica ; 60 , 4-7 ; 285-294
2006-01-01
10 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Role of support afferentation in control of the tonic muscle activity
Online Contents | 2007
|Role of support afferentation in control of the tonic muscle activity
British Library Conference Proceedings | 2007
|Online Contents | 1996
Engineering Index Backfile | 1950
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