Influence of Altered Knee Angle and Muscular Contraction Type on Electromyographic Activity of Hamstring Muscles during 45° Hip Extension Exercise

Figure 1. 45° hip extension exercise during Isometric contraction. A) Isometric at knee flexion 0° B) Isometric at knee flexion 0° and hip flexion 45° C) Isometric at knee flexion 45° D) Isometric at knee flexion 45° and hip flexion45° E) Isometric at knee flexion 90° F) Isometric at knee flexion 90° and hip flexion 45°.