Knechtle Beat, Rüst Christoph Alexander, Rosemann Thomas, Martin Normand
Facharzt FMH für Allgemeinmedizin, Gesundheitszentrum St. Gallen, Vadianstrasse 26, 9001 St. Gallen, Switzerland ; Institute of General Practice and for Health Services Research, University of Zurich, Zurich, Switzerland.
Institute of General Practice and for Health Services Research, University of Zurich, Zurich, Switzerland.
Springerplus. 2014 May 28;3:269. doi: 10.1186/2193-1801-3-269. eCollection 2014.
This case report presents the performance of an athlete who completed for the first time in history the total distance of 33 Ironman triathlons within 33 consecutive days. The athlete finished the total distance of 7,458 km (i.e. 125 km swimming, 5,940 km cycling and 1,393 km running) within a total time of 410 h and a mean time of 12 h 27 min per Ironman distance. During the 33 days, the athlete became slower in swimming (r(2) = 0.27, p = 0.0019), transition time 1 (r(2) = 0.66, p < 0.001), and transition time 2 (r(2) = 0.48, p < 0.0001). However, in cycling (r(2) = 0.07, p = 0.13), running (r(2) = 0.04, p = 0.25) and overall race time (r(2) = 0.10, p = 0.069), the athlete was able to maintain his performance during the 33 days. The coefficients of variation (CV) for the split times in swimming, cycling, running and overall race times were very low (i.e. 2.7%, 3.2%, 4.7%, and 2.7%, respectively) whereas the CV for transition times 1 and 2 were considerably higher (i.e. 25.5% and 55.5%, respectively). During the 33 days, body mass decreased from 83.0 kg to 80.5 kg (r(2) = 0.55, p < 0.0001). Plasma [Na(+)] remained within the reference range, creatine kinase, blood glucose and liver enzymes were minimally elevated above the reference range after four of five stages where blood analyses were performed. This case report shows that this athlete finished 33 Ironman triathlons within 33 consecutive days with minor variations over time (i.e. even pacing) in both split times and overall race times. This performance was most probably due to the high experience of the athlete, his pacing strategy and the stable environmental conditions.
本病例报告介绍了一名运动员的表现，他有史以来首次在连续33天内完成了33次铁人三项赛的全程。该运动员在总时长410小时内完成了7458公里的总距离（即125公里游泳、5940公里骑行和1393公里跑步），每次铁人三项赛距离的平均用时为12小时27分钟。在这33天里，该运动员在游泳项目中速度变慢（r(2) = 0.27，p = 0.0019），第一转换时间变慢（r(2) = 0.66，p < 0.001），第二转换时间也变慢（r(2) = 0.48，p < 0.0001）。然而，在骑行项目中（r(2) = 0.07，p = 0.13）、跑步项目中（r(2) = 0.04，p = 0.25）以及总比赛时间方面（r(2) = 0.10，p = 0.069），该运动员在这33天里能够保持其表现。游泳、骑行、跑步和总比赛时间分段用时的变异系数（CV）非常低（分别为2.7%、3.2%、4.7%和2.7%），而第一和第二转换时间的CV则高得多（分别为25.5%和55.5%）。在这33天里，体重从83.0公斤降至80.5公斤（r(2) = 0.55，p < 0.0001）。血浆[Na(+)]保持在参考范围内，在进行血液分析的五个阶段中的四个阶段后，肌酸激酶、血糖和肝酶仅略高于参考范围。本病例报告表明，这名运动员在连续33天内完成了33次铁人三项赛，分段用时和总比赛时间随时间的变化很小（即配速均匀）。这一表现很可能归功于该运动员的丰富经验、他的配速策略以及稳定的环境条件。
