Our findings are somewhat contrary to previous research involving the squat exercise conducted by Salem and Powers who found no difference in external knee flexion moments (reported as internal knee extension moments) at 70°, 90°, and 110° of knee flexion utilizing a load of 85% 1RM (38). The authors did not specify whether depth-specific 1RM values were found, but if they only determined a single 1RM for the whole study, that alone would account for the differences between their data and ours. Other potential reasons for these contradictory results may be that the previous study had a small sample size of 5 subjects and utilized female collegiate athletes.