Table 2.

Distribution of MHC isoforms and fibre types

		P0		P2
		Pre	Post	Pre	Post
MHC (%)	MHC-I	63 ± 5	57 ± 5*	63 ± 5	65 ± 4
	MHC-IIA	32 ± 4	38 ± 5*	30 ± 4	31 ± 4
	MHC-IIX	6 ± 2	5 ± 5	7 ± 2	4 ± 1*
Number (%)	Type 1	56 ± 6	51 ± 5	52 ± 4	60 ± 3
	Type 2a	29 ± 3	34 ± 4*	30 ± 4	29 ± 3
	Type 2b	15 ± 4	15 ± 2	18 ± 3	11 ± 1*
Area (%)	Type 1	62 ± 6	56 ± 6*	58 ± 5	65 ± 4
	Type 2a	28 ± 4	34 ± 5*	28 ± 4	27 ± 4
	Type 2b	10 ± 2	11 ± 2	14 ± 4	8 ± 1*

Data are presented as mean values ± s.e.m. for P0 (n = 7) and P2 (n = 6) before (Pre) and after (Post) a 12 week training period.

^*Significantly different from Pre (P < 0.05).