Average maximum net knee joint moments were measured in ascending and descending phases and were positive (extensor) in all instances (Figure 3). Extension moments at the knee varied significantly between the two types of squats (t14 = 23.957, p = 0.001). Mean maximum knee moments were as follows: back squat = 1.0 6 0.4 Nmkg21, front squat = 0.7 6 0.2 Nmkg21
.