Reflex amplitude data were normalized by dividing individual M-responses and H-reflexes during stretch by the mean precondition control amplitude (the second set of control H-reflexes after the stretch yielded similar results and, therefore, are not reported). Normalized H-reflex amplitude scores were between 0 and 2.0 except in Subject 5,
who had 42 of 60 scores between 2.0 and 27.0. Because a lack of homogeneity of variance was attributed entirely to this subject, these data were omitted from further statistical analysis. Analyses of variance were performed on M-response and H-reflex normalized amplitudes. The response number (5 levels), trials (3 levels), and stretching
conditions (4 levels) were treated as within factors