title: The origin of the instantaneous elasticity in single frog muscle fibres.
abstract: High-speed cinematographic recordings of single tetanized muscle fibres during a quick decrease in length revealed that the shortening was mostly localized at the fibre segment nearest the released end of the fibre, indicating that the instantaneous elasticity may not originate from the elasticity of the cross-bridges.
mesh_terms: D000818:Animals; D001001:Anura; D004548:Elasticity; D066298:In Vitro Techniques; D009119:Muscle Contraction; D009132:Muscles / Q000502:physiology* / Q000648:ultrastructure; D011898:Ranidae