Table 1.

Quantitative morphology for muscles of mice exposed to plantarflexor SSC training

	Non-trained	Plantarflexion SSC-trained
PLT
Non-degenerative muscle fibers (%)	86.7 ± 0.9	84.5 ± 0.5
Degenerative muscle fibers (%)	0.0 ± 0.0	0.0 ± 0.0
Non-cellular interstitium (%)	12.2 ± 0.7	14.3 ± 0.5*
Cellular interstitium (%)	0.8 ± 0.1	1.3 ± 0.1*
Centrally nucleated fibers (%)	4.0 ± 0.9	14.0 ± 5.2
TA
Non-degenerative muscle fibers (%)	88.2 ± 0.5	83.2 ± 1.4*
Degenerative muscle fibers (%)	0.0 ± 0.0	0.0 ± 0.0
Non-cellular interstitium (%)	11.1 ± 0.5	15.2 ± 1.3*
Cellular interstitium (%)	0.7 ± 0.1	1.6 ± 0.2*
Centrally nucleated fibers (%)	1.5 ± 0.7	17.5 ± 5.7*

Sample sizes were N = 9 per group. Percentage refers to percentage of tissue. Values are means ± SE. *Different from non-trained muscle, P < 0.05