Injury Prevention. Because the hamstrings and quadriceps perform such important functions, avoiding injuries is crucial for athletes. Lack of strength and conditioning and tightness can cause injuries, so performing strengthening exercises and stretching can help you avoid strains.he hamstrings are located on the back of the upper leg, and the quadriceps are located on the front of the upper leg. The hamstrings run from an attachment point just below the knee all the way up to the pelvis.