Myofibrillar ATPase activity in human muscle fast-twitch subtypes

descriptionPublicationkeyboard_double_arrow_right Article 01 Jan 1983 English Publisher:Springer Science and Business Media LLCJournal:Histochemistry, volume 78, pages 405-408 (issn: 0301-5564, eissn: 1432-119X,

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Authors: R S, Staron; R S, Hikida; F C, Hagerman;

doi: 10.1007/bf00496627

pmid: 6224763

Myofibrillar ATPase activity in human muscle fast-twitch subtypes

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Abstract

Under local anesthesia, a muscle biopsy was removed from an individual with a high percentage of type II subtypes. The muscle sample was assayed for myofibrillar ATPase activity using various acid preincubation pH values. Subtle differences were found to exist in the acid-lability of ATPase activity among the type II fibers. These observations suggest different ratios of IIA/IIB myosis and may reflect a gradual transformation between type IIA and IIB fibers.

Related Organizations

Ohio University
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Ohio University - Lancaster
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University System of Ohio
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Keywords

Adenosine Triphosphatases, Myofibrils, Muscles, Humans, Muscle Contraction

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