Rüst Christoph Alexander, Knechtle Beat, Knechtle Patrizia, Rosemann Thomas
Institute of General Practice and Health Services Research, University of Zurich, Zurich, Switzerland.
Chin J Physiol. 2013 Feb 28;56(1):1-10. doi: 10.4077/CJP.2013.BAA089.
A personal best marathon time has been reported as a strong predictor variable for an Ironman race time in recreational female Ironman triathletes. This raises the question whether recreational female Ironman triathletes are similar to recreational female marathoners. We investigated similarities and differences in anthropometry and training between 53 recreational female Ironman triathletes and 46 recreational female marathoners. The association of anthropometric variables and training characteristics with race time was investigated using bi- and multi-variate analysis. The Ironman triathletes were younger (P < 0.01), had a lower skin-fold thickness at pectoral (P < 0.001), axillar (P < 0.01), and subscapular (P < 0.05) site, but a thicker skin-fold thickness at the calf site (P < 0.01) compared to the marathoners. Overall weekly training hours were higher in the Ironman triathletes (P < 0.001). The triathletes were running faster during training than the marathoners (P < 0.05). For the triathletes, neither an anthropometric nor a training variable showed an association with overall Ironman race time after bi-variate analysis. In the multi-variate analysis, running speed during training was related to marathon split time for the Ironman triathletes (P = 0.01) and to marathon race time for the marathoners (P = 0.01). To conclude, although personal best marathon time is a strong predictor variable for performance in recreational female Ironman triathletes, there are differences in both anthropometry and training between recreational female Ironman triathletes and recreational female marathoners and different predictor variables for race performance in these two groups of athletes. These findings suggest that recreational female Ironman triathletes are not comparable to recreational female marathoners regarding the association between anthropometric and training characteristics with race time.
据报道，个人最佳马拉松成绩是业余女子铁人三项运动员铁人三项比赛成绩的一个强有力的预测变量。这就提出了一个问题，即业余女子铁人三项运动员是否与业余女子马拉松运动员相似。我们调查了53名业余女子铁人三项运动员和46名业余女子马拉松运动员在人体测量学和训练方面的异同。使用双变量和多变量分析研究了人体测量变量和训练特征与比赛成绩之间的关联。与马拉松运动员相比，铁人三项运动员更年轻（P<0.01），胸部（P<0.001）、腋窝（P<0.01）和肩胛下（P<0.05）部位的皮褶厚度更低，但小腿部位的皮褶厚度更厚（P<0.01）。铁人三项运动员的每周总训练时长更高（P<0.001）。铁人三项运动员在训练期间的跑步速度比马拉松运动员快（P<0.05）。对于铁人三项运动员，双变量分析后，无论是人体测量变量还是训练变量都与铁人三项比赛总成绩没有关联。在多变量分析中，训练期间的跑步速度与铁人三项运动员的马拉松分段成绩（P=0.01）以及马拉松运动员的马拉松比赛成绩（P=0.01）相关。总之，尽管个人最佳马拉松成绩是业余女子铁人三项运动员表现的一个强有力的预测变量，但业余女子铁人三项运动员和业余女子马拉松运动员在人体测量学和训练方面都存在差异，并且这两组运动员比赛成绩的预测变量也不同。这些发现表明，在人体测量学和训练特征与比赛成绩之间的关联方面，业余女子铁人三项运动员与业余女子马拉松运动员不可相提并论。
