An upright posture in bed also aids lung expansion. 以直立姿勢躺在床上也有助於肺部舒展。
Fixed flexion deformity of the hip forces the lumbar spine into lordosis on assuming an upright posture and may aggraate lower back pain symptoms. 髖關節固定性屈曲攣縮可引起腰椎前突,以便恢復直立姿勢,從而加重下腰痛癥狀。