Modelling swimmers' speeds over the course of a race
Modelling swimmers' speeds over the course of a race
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DOI：
10.1016/j.jbiomech.2007.10.007
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发表时间：
2008-01-01
影响因子：
2.4
通讯作者：
Ohgi, Yuji
中科院分区：
文献类型：
--
作者：
Shimadzu, Hideyasu;Shibata, Ritel;Ohgi, Yuji
建立了男子200m自由泳比赛全程游泳速度的随机模型。它建立在一个动力学模型的基础上，反映了游泳中阻力和推进力之间的权衡。模型的参数是根据在水池沿线的几个点观测到的经过时间数据来估计的。该模型很好地拟合了数据，也很好地描述了每个游泳运动员在比赛中从一个阶段到另一个阶段的游泳策略。在对模型进行拟合的过程中，同时估计了衡量个人游泳相对于比赛的平均游泳速度快或慢的个人因素。不出所料，这一因素与竞选的最终结果密切相关。(C)2007爱思唯尔有限公司。保留所有权利。
A stochastic model of swimming speed over the course of a male 200 m freestyle swimming race is proposed. It builds on a dynamical model reflecting the trade-off between drag and propulsion in swimming. The parameters of the model are estimated from elapsed time data observed at several points along the pool. The model fits the data well and also provides a good description of the swimming strategies of each swimmer from phase to phase in the race. An individual factor measuring how much faster or slower the individual swims relative to the average swimming speed of the race is simultaneously estimated in the course of fitting the model. This factor is, as expected, closely related to the final outcome of the race. (c) 2007 Elsevier Ltd. All rights reserved.