Abstract
FOR many years it has been widely accepted that active muscles are generally redder than those which are little used. Such differences might be regarded as fortuitous, however, and unconnected with the state of activity. The red colour is principally due to the presence of the pigment myoglobin1. To secure a convincing indication that myoglobin is increased as a result of muscular activity, its concentration has been compared in the muscles of forcibly exercised and of inactive rats. In addition, the effects of enforced inactivity on myoglobin concentration has been studied in the pectoral and leg muscles of domestic fowls.
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References
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LAWRIE, R. Effect of Enforced Exercise on Myoglobin Concentration in Muscle. Nature 171, 1069–1070 (1953). https://doi.org/10.1038/1711069a0
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DOI: https://doi.org/10.1038/1711069a0
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