The hamstring muscle group are (BLANK) to the quadriceps group.

The hamstring muscle group is classified as antagonists to the quadriceps group due to their opposing functions during leg movements. The hamstrings, located at the back of the thigh, are primarily responsible for knee flexion and hip extension. In contrast, the quadriceps, located at the front of the thigh, are responsible for knee extension.

During activities such as walking or running, when the quadriceps contract to extend the leg at the knee, the hamstrings must relax to allow for this movement. Conversely, when the hamstrings contract to flex the knee, the quadriceps must relax. This reciprocal inhibition exemplifies how these two muscle groups work in opposition to each other to enable smooth and efficient movement. Understanding this dynamic is crucial for designing effective exercise programs that promote balance and strength in the legs.