Table 1.

Average of total fiber count out on approximately 200 fibers per subject that were analyzed for the MHC isoform distribution

Group	MHC I%	MHC I/IIa%	MHC I/IIa/IIx%	MHC IIa%	MHC IIa/IIx%	MHC IIx%	MHC hybrids%
Heart failure	66.4 ± 13.4	11.0 ± 3.1	1.4 ± 1.2	64.8 ± 2.1	46.2 ± 13.4*	10.4 ± 4.3	58.6 ± 14.6*
Control	87.6 ± 11.0	8.4 ± 2.1	0.4 ± 0.2	77.4 ± 5.3	17.8 ± 3.2	3.8 ± 1.9	26.6 ± 3.5

Notes: MHC hybrids represent a combination of MHCs expressing more than one isoform; all data are expressed as mean ± SD.

^*Statistically significant difference between groups (P < 0.05).

Abbreviations: MHC, myosin heavy chain; SD, standard deviation.