Knutzen K M, Price A
Department of Physical Education, Health, and Recreation, Western Washington University, Bellingham 98225-9067.
J Am Podiatr Med Assoc. 1994 Apr;84(4):171-80. doi: 10.7547/87507315-84-4-171.
Twenty nonsymptomatic subjects were assessed while walking at a photoelectronically monitored place (2 +/- 0.1 m.s-1) using high speed cinematography (200 Hz) to record the rearfoot motion in the frontal plane, and electrogoniometry (100 Hz) to measure joint kinematics in the lower extremity. The foot type of the subjects was determined statically by using a podiascope and digitization techniques. The results demonstrated that no foot type variables contributed significantly to the variance in either rearfoot angle at foot strike or maximum rearfoot angle (p > 0.05). Regression equations were developed using kinematic variables: rearfoot angle at foot strike = 3.81 + (0.06time to hip internal rotation) - (0.46tibia internal rotation) + (0.14plantarflexion); (R = 0.87, SE = 1.23 degrees); maximum rearfoot angle = 4.02 + (0.52hip internal rotation) - (0.11*time to hip internal rotation); (R = 0.66, SE = 2.07 degrees). This study identifies hip joint movements as being the most significant contributors to prediction of rearfoot angles produced during walking.
20名无症状受试者在光电监测的场地以2±0.1米/秒的速度行走时接受评估，使用高速摄影（200赫兹）记录后足在额状面的运动，并用电角度计（100赫兹）测量下肢关节的运动学数据。通过使用足型镜和数字化技术静态确定受试者的足型。结果表明，没有任何足型变量对着地时后足角度或最大后足角度的方差有显著贡献（p>0.05）。使用运动学变量建立了回归方程：着地时后足角度=3.81+（0.06×髋关节内旋时间）-（0.46×胫骨内旋）+（0.14×跖屈）；（R=0.87，标准误=1.23度）；最大后足角度=4.02+（0.52×髋关节内旋）-（0.11×髋关节内旋时间）；（R=0.66，标准误=2.07度）。本研究确定髋关节运动是预测步行过程中产生的后足角度的最重要因素。
