![The hamstring and quadriceps muscle groups are antagonists of each other, and each group is a prime mover in its own right. The muscle extend the hip and flex the knee. The The hamstring and quadriceps muscle groups are antagonists of each other, and each group is a prime mover in its own right. The muscle extend the hip and flex the knee. The](https://homework.study.com/cimages/multimages/16/upper_leg_muscles_front_and_back3527717709734035964.jpg)
The hamstring and quadriceps muscle groups are antagonists of each other, and each group is a prime mover in its own right. The muscle extend the hip and flex the knee. The
WOW Fitness TTDI - Quads n Hams Quadriceps n Hamstrings. Quads are the 4 muscles at the front of your upper legs. The Hams are the 3 at the back. Big muscles
![SuppVersity EMG Series - Gluteus maximus, Quadriceps femoris, Gastrocnemius, Soleus & More: The Very Best Exercises for Tree-Trunk Legs and Herculean Calves SuppVersity EMG Series - Gluteus maximus, Quadriceps femoris, Gastrocnemius, Soleus & More: The Very Best Exercises for Tree-Trunk Legs and Herculean Calves](https://3.bp.blogspot.com/-lHsFx9NrC4Y/TjjsMD5Ip-I/AAAAAAAABuo/-1anxhFDp04/s1600/legs.png)