The aim of the present study was to compare swimming performances of successful finishers of the 'Triple Crown of Open Water Swimming' from 1875 to 2017, assessing the effects of sex, the place of event and the nationality of swimmers. Data from 535 finishers in ‘Catalina Channel Swim’, 1,606 finishers in ‘English Channel Swim’ and 774 finishers in ‘Manhattan Island Marathon Swim’ were analysed. We performed different analyses and regression model fittings for all swimmers and annual top-5 finishers. Effects (sex, event, time, nationality) and interaction terms (event—time) were examined through a multi-variable spline mixed regression model. Considering all swimmers, we found that (i) women were approximately 0.06 km/h faster than men (p = 0.011) and (ii) Australians were 0.13 km/h faster than Americans (p = 0.004) and Americans were 0.19 km/h faster than British (p<0.001) and 0.21 km/h faster than Canadians (p = 0.015). When considering annual top-5 finishers, we found that (i) women were 0.07 km/h slower than men (p = 0.042) and (ii) Australians were not faster than Americans (p = 0.149) but Americans were 0.21 km/h faster than British (p<0.001). Our findings improved the knowledge about swim performances over time, in the three events, considering the effects of sex and the nationality of swimmers.
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机译:本研究的目的是比较1875年至2017年“开放水域游泳三冠王”成功完成者的游泳成绩,评估性别,活动地点和游泳者国籍的影响。分析了“ Catalina Channel Swim”中535名完成者,“ English Channel Swim”中1,606名完成者和“ Manhattan Island Marathon Swim”中774名完成者的数据。我们对所有游泳者和年度前5名完成者进行了不同的分析和回归模型拟合。通过多变量样条混合回归模型检查了效果(性别,事件,时间,国籍)和交互作用项(事件-时间)。考虑到所有游泳者,我们发现(i)女人比男人快约0.06 km / h(p = 0.011)和(ii)澳大利亚人比美国人快0.13 km / h(p = 0.004),美国人比0.19 km / h比英国人快(p <0.001),比加拿大人快0.21 km / h(p = 0.015)。在考虑年度前5名选手时,我们发现(i)女人比男人慢0.07 km / h(p = 0.042)和(ii)澳大利亚人不比美国人快(p = 0.149),但美国人为0.21 km / h比英国快(p <0.001)。考虑到性别和游泳者的国籍,我们的发现提高了这三个事件中随着时间推移游泳表现的知识。
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