A new paradigm for muscle contraction

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dc.contributor.authorHerzog, Walter
dc.contributor.authorPowers, Krysta
dc.contributor.authorJohnston, Kaleena
dc.contributor.authorDuvall, Mike
dc.date.accessioned2016-06-21T19:38:44Z
dc.date.available2016-06-21T19:38:44Z
dc.date.issued2015-06-10
dc.description.abstractMuscle contraction has fascinated lay people and scientists for centuries. However, a good understanding of how muscle contraction occurs seemed only possible once microscopy techniques had evolved to a level where basic structural features, such as the regular cross striation patterns of fibers, could be observed in the late 19th century. In the early 20th century, a stimulated muscle was simply considered a new elastic body (Gasser and Hill,1924). Shortening and work production took place with a fixed amount of energy tha twas stored in this body and evolved elastically through stimulation. However, this notion was proven false when Wallace Fenn demonstrated that muscle produced an increasing amount of total energy when increasing its mechanical work output; an observation that was in contradiction with Hill’s elastic body theory (Fenn, 1923,1924). Specifically, Fenn, who worked in the laboratory of Hill and measured heat and work production in frog muscles, found that a muscle allowed to shorten liberated more energy than a muscle held isometrically or a muscle that was stretched. This has become known as the Fenn effect in muscle physiology.en_US
dc.description.refereedYesen_US
dc.identifier.citationHerzog, W., Powers, K., Johnston, K., & Duvall, M. (2015). A new paradigm for muscle contraction. Frontiers in physiology, 6.en_US
dc.identifier.doi10.3389/fphys.2015.00174
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/34239
dc.identifier.urihttp://hdl.handle.net/1880/51415
dc.language.isoenen_US
dc.publisherFrontiers in Physiologyen_US
dc.publisher.departmentHuman Performance Laboratoryen_US
dc.publisher.facultyKinesiologyen_US
dc.publisher.institutionUniversity of Calgaryen_US
dc.subjecttitinen_US
dc.subjectactinen_US
dc.subjectmyosinen_US
dc.subjectcrossbridge theoryen_US
dc.subjectmuscle contractionen_US
dc.subjecteccentricen_US
dc.subjectmuscle stretchingen_US
dc.subjectforce enhancementen_US
dc.titleA new paradigm for muscle contractionen_US
dc.typejournal article
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