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. 2015 Jan;30(1):30–39. doi: 10.1152/physiol.00024.2014

Table 4.

Hormonal regulation of fiber-type expression by thyroid hormone

Insult Male Female Reference
Hypothyroidism in humans ↑ Type-II ↑↑ Type-II 64
T3 treatment of rat soleus I/IIA > I/IIAX I/IIA > I > I/IIAX 102
T3 treatment on rat soleus ↑IIX ↑ IIA 53, 102
T3 treatment in rat EDL No change IIA → IIB 53

T3 treatment, hyperthyroidism.