Hip extension is a movement that occurs when the thigh moves backward relative to the pelvis. This action primarily involves the gluteus maximus, hamstrings, and other muscles around the hip joint. It is essential for various activities such as walking, running, and climbing stairs, as it helps propel the body forward. During hip extension, the hip joint increases its angle, moving from a flexed position to a more extended one. This movement is crucial for maintaining balance and stability, especially during athletic activities. Proper hip extension contributes to overall lower body strength and mobility.