Fig. 2

Muscle forces normalised to each participant’s bodyweight as a function of knee and hip flexion angles for the exercises goodmornings (GMs) using 25% of subject’s BW (solid line), deadlifts (DLs) using 25% (solid) and 50% (dashed) of subject’s BW and split squats using a step length of 70% of the participant’s leg length and a maximal tibial angle of 90° for the front (solid) and rear limb (dashed). The four parts of the Quadriceps muscles are shown: m rectus femoris in blue; m. vastus intermedius in red; m vastus lateralis in purple; m. vastus medialis in green, together with the four parts of the Hamstring muscles: m. biceps femoris long head in blue; m. biceps femoris short head in red; m. semimembranosus in purple; m. semitendinosus in green, as well as the three parts of the m. gluteus maximus: lateral part in blue; intermedial part in red; medial part in purple