World Class Elite Breaststrokers Downward Kick EMG Muscle Activity of the Gluteus Maximus, Quadriceps Femoris, Hamstring, Gastrocnemius Medialis, Rectus Abdominal, and Erector Spinae

This study analyzed the difference between using a downward breaststroke kick and a horizontal breaststroke kick in a sample of world class elite swimmers.We compared average muscle activity of the gluteus maximus,quadriceps femoris(vastus medialis and rectus femoris),hamstring/long head of the biceps femoris,gastrocnemius medialis,rectus abdominal,and erector spinae when using the downward breaststroke kick technique.We find that when this sample of swimmers utilized the downward breaststroke kick,max speed and velocity per stroke increased,measured by 12,788 EMG samples,where the results are highly correlated to duration of the aerodynamic buoyant force in breaststroke kick technique.The increases in performance observed from measuring the world class elite swimmers is highly correlated to the duration of the kick aerodynamic buoyant force.Among this sample of elite swimmers,the longer a swimmer demonstrates a buoyant force breaststroke kick,the lower the time in a 100 breaststroke.

The Downward Breaststroke Kick Makes Fast Speed and Increased Lactate Acid

In this study,we assess the effectiveness of utilizing a downward breaststroke kick with regard to the overall time,max speed and velocity per stroke when using a downward breaststroke kick technique.We analyzed breaststroke kick of knee angles from 8 elite world class swimmers.The downward breaststroke kick used in breaststroke competitions resulted in improvements average of 100 yard or 100 meter breaststroke from 1:05.10 s to 1:01.97 s.Increases in performance max speed and velocity per stroke among 9 elite world class swimmers are highly correlated to duration of the kick aerodynamic buoyant farce in breaststroke.The downward breaststroke kick also resulted in an increase in lactate acid.

跆拳道比赛中近身下劈运动运用及方法

通过2004年全国跆拳道冠军赛男子20场录像资料观察,统计实战中下劈腿技术和其他各种技术的运用情况,并对相应技术做综合分析与研究;提出了跆拳道下劈腿技术在男子跆拳道比赛中应该注意的问题,并从训练和比赛的角度对男子运动员和教练员如何提高技术与得分提出了一些参考性的建议。

跆拳道专项学生下劈腿中提膝技术训练的研究——以南京体育学院跆拳道专项学生为例

目的对提高运动员下劈腿提膝的训练方法进行分析,提出相应的训练建议。方法采用文献资料法、观察法以及逻辑分析法等研究方法对6名跆拳道运动员下劈腿提膝技术进行研究。结果屈膝阶段用时要少于伸膝阶段用时。结论踢靶专项训练类的提膝训练可以提高跆拳道的下劈腿技术。