Relationship between lower limbs kinematic variables and effectiveness of sprint during maximum velocity phase
Relationship between lower limbs kinematic variables and effectiveness of sprint during maximum velocity phase
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DOI：
10.5277/abb-00290-2015-02
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发表时间：
2015-01-01
影响因子：
1
通讯作者：
Rokita, Andrzej
中科院分区：
文献类型：
--
作者：
Struzik, Artur;Konieczny, Grzegorz;Rokita, Andrzej
目的：本研究的目的是确定30米直线跑中15-25米段的跑步时间与踝关节、膝关节和髋关节观察到的角度和角速度变化之间的关系。因此，作者试图回答在冲刺最大速度阶段的下肢运动技术是否与跑过这一段的时间显着相关的问题。方法：选取来自下西里西亚省的14名青少年作为实验对象。运行时间测量采用Fusion智能测速系统。使用Noraxon MyoMotion系统记录运动学数据。结果：15 - 25 m的冲刺时间与左髋关节旋转（正）和左右踝关节背跖屈曲（负）之间存在统计学意义上的关系。结论：在30米冲刺的最大速度阶段，在整个运动范围内进行背-足底弯曲的效果是有益的。这可以归因于在跨步循环中释放的弹性能量的使用。此外，髋部旋转应尽量减少，这使步幅更沿着一条直线（一条直线）而不是从一边到另一边。
Purpose: The aim of the study was to determine the relationships between time of running over a 15-25 m section of a 30-meter run along a straight line and changes in the angle and angular velocity observed in ankle, knee and hip joints. Therefore, the authors attempted to answer the question of whether a technique of lower limbs movement during the phase of sprint maximum velocity significantly correlates with the time of running over this section. Methods: A group of 14 young people from the Lower Silesia Voivodeship Team participated in the experiment. A Fusion Smart Speed System was employed for running time measurements. The kinematic data were recorded using Noraxon MyoMotion system. Results: There were observed statistically significant relationships between sprint time over a section from 15 to 25 m and left hip rotation (positive) and between this time and left and right ankle joint dorsi-plantar flexion (negative). Conclusions: During the maximum velocity phase of a 30 m sprint, the effect of dorsi-plantar flexion performed in the whole range of motion was found to be beneficial. This can be attributed to the use of elastic energy released in the stride cycle. Further, hip rotation should be minimized, which makes the stride aligned more along a line of running (a straight line) instead of from side to side.