Department of Exercise Science & Sport Management, Southern Cross University , Lismore, NSW, Australia.
School of Education, Southern Cross University , Lismore, NSW, Australia.
J Sports Sci Med. 2006 Dec 15;5(4):417-524. eCollection 2006.
Many studies have investigated the kinematics of sports skills with the majority describing the kinematics of the technique or investigating significant kinematic variables that affect performance. Many sports skills are complex three-dimensional movements involving many joints. However, few studies have investigated the relationships between kinematic variables during performance of such skills. The aim of this study was to investigate the inter- relationships among three-dimensional kinematic variables during performance of a lofted instep soccer kick. A motion analysis system was used to collect kinematic data for 13 skilled amateur soccer players attempting a standardised lofted instep kick. Three-dimensional angular displacement patterns were reported for the thoracolumbar spine and right hip joints. Two-dimensional angular displacement data was reported for the right knee and ankle joints. An exploratory rather than confirmatory factor analysis was applied, as there is currently no established theory regarding the kinematics of a lofted instep kick. Factors were extracted using the Maximum Likelihood Solution and orthogonally rotated using Varimax with Kaiser normalisation. The inter-relationship among biomechanical variables within the seven extracted factors was analysed with each factor revealing previously unknown inter-relationships among variables for different aspects of the kick. The use of exploratory factor analysis has shown the complex three-dimensional kinematic inter-relationships for a lofted instep kick. An understanding of these relationships could prove useful to coaches when instructing, and in the development of coaching programmes related to the lofted instep kick. Key PointsMotion analysis of lofted instep kick.Inter-relationship among biomechanical variables within 7 factors analysed.Each factor revealed previously unknown inter-relationships among variables for different aspects of the kick.understanding these relationships could prove useful to coaches in the development of the lofted instep kick.
许多研究已经调查了运动技能的运动学，其中大多数描述了技术的运动学或研究了影响表现的重要运动学变量。许多运动技能是涉及多个关节的复杂三维运动。然而，很少有研究调查在执行此类技能时运动学变量之间的关系。本研究的目的是调查在执行高脚背踢足球时三个维度运动学变量之间的相互关系。运动分析系统用于收集 13 名熟练业余足球运动员进行标准高脚背踢足球的运动学数据。报告了胸腰椎和右髋关节的三维角位移模式。报告了右膝和踝关节的二维角位移数据。应用探索性而不是验证性因子分析，因为目前没有关于高脚背踢足球运动学的既定理论。使用最大似然解提取因子，并使用具有 Kaiser 标准化的正交 Varimax 进行旋转。使用每个因素揭示了不同方面踢腿中变量之间以前未知的相互关系，分析了在七个提取因子内生物力学变量之间的相互关系。探索性因子分析显示了高脚背踢足球的复杂三维运动学相互关系。了解这些关系可能对教练在指导和制定与高脚背踢足球相关的教练计划时非常有用。要点高脚背踢足球的运动分析。在 7 个因子内的生物力学变量之间的相互关系进行分析。每个因素都揭示了不同方面踢腿中变量之间以前未知的相互关系。了解这些关系可能对教练在制定高脚背踢足球计划时非常有用。
