Fig. 4.

Profile analysis of distal hindlimb muscle activity from intact rats. Average loading values for principal components one and two (PC1 and PC2) are illustrated as bubble plots. Symbol size is proportional to the s.e.m. (i.e. larger bubbles indicate larger variance about the mean). All intra-slope comparisons of Sol vs TA were significantly different on PC1 or PC2, or both (data enclosed by gray line vs data enclosed by dotted line). Upslope PC1 loadings were significantly different from Lv and Ds PC1 loadings for the Sol. PC loadings did change with slope for the TA. *P<0.05 vs Lv and Ds; ^†P<0.05, TA vs Sol, PC1 and PC2.