This could be because trunk extension is a multi-joint movement involving the lumbar spine, pelvis, and hips, where potential compensation by lower limb muscles, such as the gluteus maximus and hamstrings, can play a significant role. These muscles can influence both the hip and pelvis, thereby...
Perform gluteal exercises to help stretch the muscles in your buttocks during the healing process. Lie down flat on your back. Bend the knee -- the one on the side where you have injured your gluteus maximus -- and grasp it with your hands. Bring your knee as far up to your shoulder ...