求翻译：行走时，脚步滚动动作在身体后面拉出一段距离，是臀部屈肌略微伸 展。肌肉锻炼及伸展有效改善关节的稳定性，拉伸关节，以减轻关节压力，减轻疼痛。是什么意思？

Walking, the pace of rolling out the action at a distance behind the body is slightly hip flexor stretch. Stretching muscles and improve joint stability, stretching joints to relieve joint stress, reduce pain.

When you are walking pace, rolling moves behind the body out of him a distance away from the Convention, is on the buttocks aggrieved slightly expanded. muscle exercise and stretching to improve joints joints, stretch the stability, in order to reduce pressure on joints, reduce pain.

When walks, the footsteps trundle movement pulls out section of distances behind the body, is the buttocks flexor extends slightly.The muscle exercise and the extension improves the joint effectively the stability, stretches the joint, reduces the joint pressure, reduces the ache.

Walking, pull some distance behind the rolling action of the body, is the hip flexor stretch slightly. Muscles and stretching improving joint stability, tensile joints to relieve joint pressure, lessen the pain.

Walking, pull some distance behind the rolling action of the body, is the hip flexor stretch slightly. Muscles and stretching improving joint stability, tensile joints to relieve joint pressure, lessen the pain.