Influence of Angles of Attack, Frequency and Kick Amplitude on Swimmer's Horizontal Velocity During Underwater Phase of a Grab Start
Influence of Angles of Attack, Frequency and Kick Amplitude on Swimmer's Horizontal Velocity During Underwater Phase of a Grab Start
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DOI：
10.1123/jab.29.1.49
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发表时间：
2013-02-01
影响因子：
1.4
通讯作者：
Hellard, Philippe
中科院分区：
文献类型：
--
作者：
Houel, Nicolas;Elipot, Marc;Hellard, Philippe
水下起跑是短跑游泳项目中的一个重要组成部分。游泳运动员必须考虑的运动学变量，以改善他们的水下阶段的开始是未知的。本研究的目的是确定运动学变量，提高性能在水下阶段的抓斗开始。对10名国家级游泳运动员水下阶段动作进行了三维分析。逐步多元线性回归确定的主要运动学变量，影响游泳运动员的水平速度每0.5米的范围内的5至7.5米。研究结果表明，在水下起动阶段的5 ~ 7.5m范围内，机器人的运动学参数发生了变化。对于这一群体的游泳者，研究结果使四个原则的建议，以改善水下阶段：i）在水下滑翔阶段的开始流线型，ii）在6米后开始海豚式踢腿，iii）在水下波动游泳期间仅使用脚和腿产生推进力，iv）提高水下波动游泳的频率
The underwater phase of starts represents an important part of the performance in sprint swimming's events. Kinematics variables that swimmers have to take into account to improve their underwater phase of starts are unknown. The aim of this study was to determine the kinematics variables that improve performance during the underwater phase of grab starts. A three-dimensional analysis of the underwater phase of ten swimmers of national level was conducted. Stepwise multiple linear regressions identified the main kinematics variables that influence the horizontal velocity of the swimmer each 0.5 m in the range of 5 to 7.5 m. The results show that the kinematics parameters change during the range of 5 to 7.5 m of the underwater phase of the starts. For this population of swimmers, the results enable proposals of four principles to improve the underwater phase: i) to be streamlined at the beginning of the underwater gliding phase, ii) to start the dolphin kicking after 6 m, iii) to generate propulsive forces using only feet and legs during underwater undulatory swimming, iv) to improve the frequency of underwater undulatory swimming