Why the study?
Although skeletal muscles are plastic and rat soleus shifts from mixed type IIA and type I fibers to nearly 100% type I fibers during development, the mechanisms of this fiber type transition needed investigation.
Population
Neonatal and maturing rats
Design
Laboratory study using immunohistochemistry and single fiber SDS-PAGE
Authors
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Hybrid fiber transitions in developing rat soleus may model plasticity; leaves open relevance to human muscle adaptation or pathology.
Key points are not available for this paper at this time.
Larson et al. (2019) studied this question.
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