Biomechanics Laboratory, Texas Woman's University, Denton, TX 76204-5647, USA.
Sports Biomech. 2010 Jun;9(2):98-114. doi: 10.1080/14763141003799459.
The study purpose was to investigate the effects of target distance on pivot hip, trunk, pelvis, and kicking leg movements in Taekwondo roundhouse kick. Twelve male black-belt holders executed roundhouse kicks for three target distances (Normal, Short, and Long). Linear displacements of the pivot hip and orientation angles of the pelvis, trunk, right thigh, and right shank were obtained through a three-dimensional video motion analysis. Select displacements, distances, peak orientation angles, and angle ranges were compared among the conditions using one-way repeated measure ANOVA (p < 0.05). Several orientation angle variables (posterior tilt range, peak right-tilted position, peak right-rotated position, peak left-rotated position, and left rotation range of the pelvis; peak hyperextended position and peak right-flexed position of the trunk; peak flexed position, flexion range and peak internal-rotated position of the hip) as well as the linear displacements of the pivot hip and the reach significantly changed in response to different target distances. It was concluded that the adjustment to different target distances was mainly accomplished through the pivot hip displacements, hip flexion, and pelvis left rotation. Target distance mainly affected the reach control function of the pelvis and the linear balance function of the trunk.
本研究旨在探讨跆拳道横踢中目标距离对枢轴髋、躯干、骨盆和踢腿运动的影响。12 名男性黑带选手对三个目标距离（正常、短和长）执行横踢。通过三维视频运动分析获得枢轴髋的线性位移和骨盆、躯干、右大腿和右小腿的方位角。使用单向重复测量方差分析（p<0.05）比较条件之间的几个方位角变量（后倾范围、右倾最大位置、右旋转最大位置、左旋转最大位置和骨盆左旋转范围；躯干的超伸展最大位置和右屈最大位置；髋关节的最大屈曲位置、屈曲范围和最大内旋位置）以及枢轴髋的线性位移和伸展距离。结果表明，不同目标距离的变化主要通过枢轴髋的位移、髋关节的屈曲和骨盆的左旋来实现。目标距离主要影响骨盆的伸展控制功能和躯干的线性平衡功能。
