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This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
Influence of age and activity levels on MyHC isoform content in human skeletal muscle. Representative image of gel lanes from young trained (YT), young untrained (YU), old trained (OT) and old untrained (OU) individuals with clear separation of MyHC isoforms into distinct bands.