RESULTS
The mean angle of knee-flexion measurements for pretest and posttest active knee extensions are presented in the Table. The repeated-measures ANOVA revealed a significant groupby- time interaction (F6,168 = 9.93, P < .001). Tukey HSD post hoc analyses revealed that significant increases in knee extension were maintained in the experimental group at 1 and 3 minutes after cessation of the stretching protocol and then gradually decreased over time. The control group's knee extension was decreased from baseline at 3 minutes and remained decreased throughout testing. The ANOVA also revealed a significant main effect for time (F6,168 = 23.49, P < .001); however, post hoc testing failed to determine when this occurred. The dependent t test revealed a 5.90 increase in knee extension (t29 = 8.46, P < .001) from the first AKE (129.2 ± 12.2) to the sixth AKE (135.1 ± 12.3).