Fig. 3.

Changes in maximum amplitudes of the M response (A) and H reflex (B) as a function of posttransection time are shown for untreated rats (solid thin line), rats exercised on a level treadmill (squares and dashed line), and rats exercised on an upslope treadmill (circles and solid thick line). In all cases, the maximum amplitude of the evoked responses recorded at posttransection times were scaled to the amplitude of the same potential in the same rat recorded before sciatic nerve transection and repair. Data from each group were fit with a linear regression line. Data recorded from animals at posttransection times earlier than 4 wk, when temporal separation of M responses and H reflexes is problematic, are not included in this analysis. The regression line for the UT rats is based on data from Boeltz et al. (2013).