Table 2.

Cross-sectional areas of the different types of fibers of normal and cross-innervated SH muscles

Fiber type	Normal SH (μm2)	Cross-innervated SH (μm2)
Slow	656 ± 71	707 ± 34
2a	711 ± 48	890 ± 24*
2x	1317 ± 128**	1470 ± 38**
2b	2334 ± 122**	2374 ± 129**

The differences between 2a and 2x and between 2x and 2b fibers in both normal and cross-innervated muscles are statistically significant (**p<0.005, t-test), whereas 2a fibers in cross-innervated SH muscles are significantly larger than those of normal SH muscles (*p<0.05, t-test). Values are mean areas ± SEM, n=4.