Biomechanical Analysis of Defensive Cutting Actions During Game Situations: Six Cases in Collegiate Soccer Competitions.
Biomechanical Analysis of Defensive Cutting Actions During Game Situations: Six Cases in Collegiate Soccer Competitions.
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DOI：
10.1515/hukin-2015-0029
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发表时间：
2015-06-27
影响因子：
2.3
通讯作者：
Fukubayashi T
中科院分区：
文献类型：
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作者：
Sasaki S;Koga H;Krosshaug T;Kaneko S;Fukubayashi T
进攻者和防守者在一对一的情况下形成的人际二元体的优势对于足球等团队球类运动的表现至关重要。本研究的目的是分析足球比赛中一对一防守动作的运动学，并确定切入动作中下肢运动学与重心平移之间的关系。六个防守场景，其中一名球员是回应一个罪犯的运球攻击被选中进行分析。为了重建球员的三维运动学，我们使用了基于摄影测量模型的图像匹配技术。从匹配的骨骼模型计算髋关节和膝关节的运动学。此外，质心高度表示为每个参与者身高的比例。质心高度与运动学之间的关系由皮尔逊积矩相关系数确定。初始接触时的标准化质心高度与垂直质心位移（r = 0.832，p = 0.040）和初始接触时的髋关节屈曲角（r =-0.823，p = 0.044）相关。这表明，初始接触时较低的质心是减少防御性切割动作期间向下垂直质心平移的重要因素，并且这主要通过髋关节屈曲来执行。因此，建议运动员在一对一的切割动作中，在初始接触时以充分弯曲的髋关节着陆，以最大限度地减少垂直质心偏移。
The strengths of interpersonal dyads formed by the attacker and defender in one-on-one situations are crucial for performance in team ball sports such as soccer. The purpose of this study was to analyze the kinematics of one-on-one defensive movements in soccer competitions, and determine the relationships between lower limb kinematics and the center of mass translation during cutting actions. Six defensive scenes in which a player was responding to an offender’s dribble attack were selected for analysis. To reconstruct the three-dimensional kinematics of the players, we used a photogrammetric model-based image-matching technique. The hip and knee kinematics were calculated from the matched skeleton model. In addition, the center of mass height was expressed as a ratio of each participant’s body height. The relationships between the center of mass height and the kinematics were determined by the Pearson’s product-moment correlation coefficient. The normalized center of mass height at initial contact was correlated with the vertical center of mass displacement (r = 0.832, p = 0.040) and hip flexion angle at initial contact (r = −0.823, p = 0.044). This suggests that the lower center of mass at initial contact is an important factor to reduce the downwards vertical center of mass translation during defensive cutting actions, and that this is executed primarily through hip flexion. It is therefore recommended that players land with an adequately flexed hip at initial contact during one-on-one cutting actions to minimize the vertical center of mass excursion.