Figure 2. A representation of typical raw EMG signals during ICL50. The window of broken line shows the period when subjects performed isometric NHE. The data within the window of the solid line were used for analysis. BFlh: biceps femoris long head, ST: semitendinosus, SM: semimembranosus, GM: gluteus maximus, ES: elector spinae, RA: rectus abdomen, EMG: electromyography, ICL50: Nordic hamstring with 50 degree of incline platform at 50° of knee flexion angle, NHE: Nordic hamstring exercise.