title: [Glycogen depletion produced in intrafusal nuclear bag muscle fibers by brief large-amplitude muscle stretches].
abstract: The glycogen content of the three types of intrafusal muscle fibre was studied with histochemical techniques in cat muscle spindles of superficial lumbrical muscles after a very large number of brief large stretches. Zones of glycogen depletion were observed in a high proportion of nuclear bag fibres, notably in bag 1 fibres, but not in chain fibres. These observations suggest that stretching of bag fibres by itself may activate these fibres.
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D002415:Cats; D006003:Glycogen / Q000378:metabolism*; D009132:Muscles / Q000378:metabolism* / Q000473:pathology / Q000503:physiopathology; D009469:Neuromuscular Junction / Q000503:physiopathology*
chemical_list: D006003:Glycogen
vernacular_title: Déplétion glycogénique produite dans les fibres musculaires intrafusales à sac nucléaire par des étirements musculaires brefs de forte amplitude.