Kinematical Research On The Curve Treading Techniques For Short-distance Events Of Excellent Speed Roller Skating Athletes In China

We use three-dimensional DLT high speed photography to catch sight of theobjects of this study, who attended the26thnational speed roller skatingtournament---the individual300m time trial. From this athletes’ movement duringthe competition, we can get the kinematics parameters, which include angle changesin trunk, hip, knee and ankle and motion changes, and we take down the result of theevent. This paper reveals the excellent level athletes’ action of corners technologystructure rules of excellent athlete by analyzing their kinematics characteristics ofgreat players’ corner taxiing technical kinematics, in order to improve the ourathletes’ skill quality in completing a set of action, and provide basic reference forcoaches to promote technology level.Through analyzing the corner taxiing technology of elite Chinese speed rollerskating athletes, this paper is to find out the differences. The use of more accurateanalytical data analyses taxiing technical movement parameter system. Establishingcorrect corner taxiing technology concepts can make up for the deficiency thatpeople perceive brings. We use diagnostic technology to further improve the qualityof movement speed which is very important to roller skating athletes, a complete set of the integrity of the action, and to promote the speed of roller skating sportsscientific training. The theory provides a strong theoretical basis, which contribute toa better result in the competition and more appreciation for the audience. In turn,they can reflect the greatest value of the theory.Results and conclusion:1.From the initial stage of the trunk angle, at skating corners the initial trunkangle of male athletes is less than the female athletes’. While athletes in a corner ofthe pedal taxiing stage, trunk Angle variation basically are the same. When thestomp changed from a single support to double support tread stage, the upper bodylifted. While the upper body lowered in the reversed development of this process.2.From the corner’s lower limbs changes in the angle of joints, we can knowthat excellent speed skatingathletes, regardlessof theangle of the hip,knee or ankle extension amplitude values are reflected in the higher range, and theredid not appear a lot of fluctuation. When the athletes doing corner taxiing, the kneeswere not fully stretched in the tread of the lower limb movements. The angle of hip,knee, ankle joint grow rapidly before the double support phase. While the growth ofthe hip is slightly ahead of the knee, and ankle angle increases a little slower that the fist two. Each joint is quickly stretched to complete the final stage of the action ofthe tread, and showing a distinct non-synchronization feature.3.From the changes of gravity center in the process of cornering roll speed, wecan conclude that the changes in the value of the speed of the athletes single-supportphase are obviously greater than the double-support phase. compared withdouble-support phase, the average speed of athletes is faster in single support withleft leg; while the speed of the athlete’s right leg can be maintained and increasedfrom double support phase; Speed varies little throughout the complex step, and thefluctuations are relatively small. It shows faster movement in the second half of theaction than the first half, showing gradual acceleration characteristics of the entireaction.4.From the impact of the stomp leg towards speed, for the elite athletes in ourcountry. The contribution of the double support phase to the elite speed skatingathletes is greater than the single-support phase, and the effectiveness of the right legstomp is better than the left leg.5.From the aspect of time, cornering roll shows the following characteristics:There is a certain regulation according to the time proportion of both legs in different tread the stage time, namely, the right leg stomp time is longer than thetime of the left leg stomp, and the time of supporting single stomp is greater than thetime of double support tread; At the same time, during the entire bend roll, acomplete complex step stomp time is less than the time of the straight a complexstep, showing the high-frequency characteristics.6.From the aspect of tread in curve skating, it shows the followingcharacteristics: According to the data in this article, it basically reflects the faster theathlete skates, the smaller the skating angle becomes.