Improving the hydrodynamic performance of swimmers during starts and turns

性能运动工程实验室与英国游泳队有9年的合作关系。我们是团队的一员，通过一系列的博士生帮助伦敦奥运会和2010年奥运会取得了成功。一个重要的问题仍然存在，即如何在比赛的开始和转弯阶段最大化表现，而不影响水面游泳阶段。在竞技游泳比赛中，任何一项比赛的水下阶段对整个比赛时间都有重要的影响。水下波动游泳技术可以让运动员达到比在水面更快的速度，但增加运动员疲劳，由于高肌肉负荷，同时屏住呼吸。比赛的开始和转身阶段也结合了复杂的流体物理，与跳水和转身相关，结合了运动员技术与自由水面和池壁的相互作用。了解这些不同的因素是如何影响人体的表现和整个比赛时间的，这对于最小化比赛时间至关重要。

The Performance Sports Engineering Laboratory has had a 9 year partnership supporting the British Swimming team. We have been part of the team that helped provide success at both the London and Rio Olympics through a series of PhD students. One significant question still remains regarding how to maximise the performance during the start and turns phase of a race without adversely affecting the surface swimming phase.Within competitive swimming the underwater phase of any race has a significant impact on the overall race time. The underwater undulating swimming technique can allow athletes to achieve higher speeds then on the surface however increases athlete fatigue due to high muscle loading whilst holding your breath.The start and turns phase of a race also combines complex flow physics associated with the dive entry and turns which combine athlete technique with interactions with the free surface and pool walls. Understanding how each of these different elements affect the performance of the human body and overall race times is essential to minimise race time.