BR caused size-changes in myofiber cross-sectional area ( FCSA , SOL , p = 0,004 ; VL , p = 0.03 ) , and myofiber slow-to-fast type transition with increased hybrids ( SOL , p = 0.043 ; VL , p = 0.037 ) however with campaign differences in SOL ( p < 0.033 ) .