• 作者： 曾永輝; 鄭誠功; 王崇禮; 陳博光; 韓毅雄; 劉堂桂
• 作者服務機構： 台大醫學院附設醫院骨科; 台大醫學院醫工研究中心
• 中文摘要： 為確定在抬物動作中地面反力中心點位置以利腰椎生物力學模式之估算，測定十位正常男性對象在直立與彎腰兩種姿勢，以及快速與慢速兩種抬物動作時的地面反力中心點位置。四種測試隨機排列連續完成。地面反力中心點位置以電腦化的Duno Graphic系統測知。結果顯示彎腰姿勢下之地面反力中心點在直利姿勢下地面反力中心點的前方。在抬物動作中，地面反力中心點向前移後再向後移。在快速抬物時的地面反力中心點比在慢速抬物時往前移更前面。
• 英文摘要： The center locations of the ground reaction force were estimated when subjects assumed upright andbending postures as well as when they lifted at low and high speeds. Ten subjects participated in thisstudy and were instructed to assume two postures and to perform two liftings sequentially in a randomorder. The center locations of the ground reaction force were calculated using a Computerized DynoGraphic system (INFOTRONIC). The cener of the ground reaction force in the full bending posture hada more anterior location than it did in the upright standing posture. When measured during the liftingactivity, the center of the ground reaction force shifted forward and then backward during the whole ac-tivity. The center location shifted to a more anterior location during high-speed lifting than it did duringlow-speed lifting.
• 中文關鍵字： ground reaction force; lifting; biomechanical model; dynamics; spinal load.
• 英文關鍵字： --