Zahálka František, Malý Tomáš, Malá Lucia, Ejem Miloslav, Zawartka Marek
Faculty of Physical Education and Sports, Sports Research Centre, Charles University, Prague, Czech Republic.
Faculty of Internal Security, J. Kukuczka Academy of Physical Education in Katowice. Katowice, Poland.
J Hum Kinet. 2017 Aug 1;58:261-271. doi: 10.1515/hukin-2017-0115. eCollection 2017 Sep.
The aim of the study was to describe and compare kinematics in two types of execution of attack hit, the goofy approach and regular approach. The research group consisted of players from the Czech Republic's top league (n = 12, age 28.0 ± 4.3 years, body height 196.6 ± 5.6 cm, body mass 89.7 ± 6.7 kg) divided into two groups according to the individual type of approach in the attack. Analysis of movement was performed by 3D kinematics video analysis, space coordinates were calculated by the DLT (Direct Linear Transformation) method together with interpretation software TEMA Bio 2.3 (Image Systems AB, Sweden). The players started their run-up from a distance of about 4 - 4.5 m from the net with similar maximal vertical velocity (2.91 - 2.96 m⋅s). The trajectory of players with goofy approach seemed to be convenient for the rotation of shoulders and hips in the moment of ball contact. Differences between both groups were observed. Players with a goofy approach had a longer flight phase compared to regularly approaching players.
本研究的目的是描述和比较两种攻击击球方式（即左脚在前的方式和常规方式）的运动学特征。研究组由来自捷克顶级联赛的球员组成（n = 12，年龄28.0±4.3岁，身高196.6±5.6厘米，体重89.7±6.7千克），根据攻击中个人的助跑方式分为两组。通过3D运动学视频分析进行运动分析，使用直接线性变换（DLT）方法和解释软件TEMA Bio 2.3（瑞典图像系统公司）计算空间坐标。球员们从距离球网约4 - 4.5米处开始助跑，最大垂直速度相似（2.91 - 2.96米·秒）。采用左脚在前方式的球员的轨迹似乎便于在击球瞬间进行肩部和髋部的转动。观察到两组之间存在差异。与采用常规助跑方式的球员相比，采用左脚在前方式的球员的飞行阶段更长。
