  Total (mean ± SEM)  Male (mean ± SEM)  Female (mean ± SEM)  Male versus female 
 Single fibers characteristics  CSA μm^{2}      mN      mN/mm^{2}     n.s. 
 Densitometry (% of MyHC)  MyHC 1      MyHC 2A      MyHC 2X     n.s. 
 % of number of fibers  MyHC 1      MyHC 2A      MyHC 2X      MyHC 2A2X      MyHC 1 2A      MyHC 1 2A 2X      MyHC 1 2X     // 

