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为探索赛艇LW2×竞速结构,对2014年赛艇世锦赛和世界杯中多名运动员的艇速、桨频进行了描述和分析。主要结论:赛艇LW2×竞速结构分为四个阶段:起航加速阶段(0-250m)、调整阶段(250-500m)、途中划阶段(500-1750m)、冲刺阶段(1750-2000m);起航加速阶段,艇速与桨频具有较高的负相关,艇速快速提高,桨频逐渐下降。调整阶段,由于生理机能暂时下降的原因,艇速和桨频都应当逐渐下降,艇速与桨频成正相关关系。但是调整能力较差、战术不当或技术不稳定时,会造成这种相关关系不显著。途中划阶段匀速是最省力的运动模式,然而并不是运动水平越高,艇速和桨频越稳定。途中划阶段艇速和桨频的波动只需要保持在一个相对很小的水平即可。冲刺阶段,运动员为了获得更大的艇速,往往更加注重桨频的提高,理论上该阶段艇速和桨频应当具有较高的正相关,但是这需要强大的体能支撑。优秀运动员更加注重途中划和冲刺阶段的名次,一般运动员更加注重前期的竞赛名次。
In order to explore the racing LW2 × racing structure, the boat speed and pitch frequency of the 2014 World Rowing Championships and World Cup finals were described and analyzed. Main conclusions: Race LW2 × racing structure is divided into four stages: acceleration phase (0-250m), adjustment phase (250-500m), stroke stage (500-1750m), sprint stage (1750-2000m); Sailing acceleration phase, the boat speed and the paddle frequency has a high negative correlation, the boat speed increased rapidly, the paddle frequency gradually decreased. During the adjustment phase, due to the temporary decrease of physiological functions, the boat speed and the pitch should be gradually decreased, and the boat speed and the paddle frequency have a positive correlation. However, the adjustment ability is poor, improper tactics or technical instability, will result in such a relationship is not significant. Uniform speed is the most effortless exercise mode on the way, however, not the higher the sport, the more stable the boat speed and pitch. On the way to the stage of speed and pitch fluctuations only need to maintain a relatively small level can be. In the sprint stage, athletes tend to pay more attention to the increase of paddle frequency in order to obtain larger boat speed. Theoretically, the boat speed and paddle frequency should have a higher positive correlation at this stage, but this requires strong physical support. Outstanding athletes pay more attention to the process of planning and sprint stages, the general athletes pay more attention to the pre-competition ranking.