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A Bio-mechanical Research Of Staring Techniques Of Excellent Short Track Speed Skating Athletes

Posted on:2016-01-18Degree:MasterType:Thesis
Country:ChinaCandidate:C WangFull Text:PDF
GTID:2297330470473610Subject:Human Movement Science
Abstract/Summary:PDF Full Text Request
Research purpose:This study based on two kinds of short track speed skating start technical preparation position kinematics data reveals the stability of the athletes posture; Combining two athletes in the process of launching technology start-up kinematic data, lower limb joint Angle Angle, the change of the Angle analysis, reveal the short track speed skating athletes starting technology quality, evaluate the efficacy of the start; Through the sprint phase of each step and the launching of the total time analysis, frequency and lower limb joint Angle changes, illustrate the effect of the sprint, the pros and cons of running rhythm.Methods:This study used a model for PC 350 e of SONY cameras under the condition of the game is the game area 500 m starting location in article 5 of the starting line article 3 point shooting the starting line. The camera shooting frequency of 25 frames/s, after the breakout/s to 50 games. Use Germany SIMI°Motion 7.50 movements parse analytical system on the whole the launching phase.The result show that:1.Position stage, the two starting ways to prepare posture can keep in a relatively stable state; Some ice-launching way before the stable Angle of a point after the ice-starting before the launching of stable Angle smaller, easier to break the stillness into motion.2.Starting stage, the two starting ways each has its characteristics, some ice-ice-after the launching of a points before the launching way starting distance; Some ice-a point after the launching way-before starting way starting time is short.3.Chinese athletes to pose more easily than other athletes in the world will be prepared to break, pose the stability of the equilibrium state from "static" to "move" the time is shorter, more quickly into the game.4.Starting stage, both the launching of center of gravity acceleration appears as "bimodal curve".Difference is that some ice-before the launching way "peak" in the former, some ice-after the launching mode in the "peak".5.Chinese athlete in the process of starting the knee joint activities, starting leg stretching is power distance is long, can convert more potential energy to kinetic energy.6.Starting stage, the "after" starting athletes can get and in a shorter period of time "before" starting players receive the same basic in a relatively short time speed difference, starting a "before" starting "after" is more economic.7.Sprint phase,1-3 steps to start before the total time is larger, the influence of the step 2 the most significant impact on the launching total time, in the future influence degree decreases in turn.The single step time with the launching of the total time correlation decreases with the increase of time, a negative correlation.8.Pedal ice Angle Angle changes to the pedal ice movement, to adapt to each other, or it will make the ice surface vertical component is too large and effect pedal ice effect.9.Push to the start-up stage, ice, push to the vertical force component of ice and ice Angle size were positively correlated, the direction of movement of component and negatively correlated with pedal ice Angle, in order to effectively increase the pedal ice force, need through within the scope of the human body joint physiological decrease pedal Angle of ice.10.Rational planing rhythm can make the athlete’s sports activities coordinated with internal organs, organs make athletes run action more harmonious, more economic use of energy, technical movement more accurately.11.Negatively related sprint phase frequency and stride. The higher the sprinting stride frequency, the smaller the smooth running of; Smooth running of the greater, the stride length is difficult to carry on, the only reasonable proportion frequency and stride, sprint phase speed faster.
Keywords/Search Tags:Short track speed skating, Starting Skills, Stability, Starting effect, Skating rhythm
PDF Full Text Request
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