正常人における腰椎部と骨盤の動きの分析

概要

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The purpose of this study was to investigate the relationships of the movement of the pelvis and the lumbar spine during the dynamic forward bending and returning movement with knee extended. The subjects were 8 males aged from 19 to 22 who bad no history of low back pain. The video-tape-recorder, the computer and the electromypgraphy were used for analyzing the movements. The muscles were chosen as follows: the right side of erector spinae (ES), rectus abdominis (RA), gluteus maximus (GM), inner hamstrings (IH), rectus femoris (RF), and lateral head of gastrocnemius (GL). The results were as follows: (1) The pelvic movement occured with the spine movement from the beginning of the forward bending. The rate of the angle between the lumbar spine and the pelvis was about　3 : 1 or 2 : 1 during the forward bending. The movement of the spine continued through the end of the forward bending, (2) the spine and pelvis moved together from tile beginning of the returning movement. The pelvic movement continued with the spine movement until the end of the extension. (3) In the returning movement, the spine and the pelvis moved exactly the opposite way from the forward bending. (4) In the forward bending, the activity of ES appeared at first and was followed by IH and GM. In the returning movement, IH or GM appeared at　first, then ES followed after them.
信州大学の論文