Miura H, Kitagawa K, Ishiko T
Department of Human and Social Sciences, Faculty of Integrated Arts and Sciences, University of Tokushima, Japan.
Int J Sports Med. 1997 May;18(4):276-80. doi: 10.1055/s-2007-972633.
This study examined the relationship between Olympic distance triathlon (swim over 1.5 km, cycle over 40.0 km, and run over 10.0 km) and economy during a simulated laboratory test triathlon. Seventeen male triathletes conducted both maximal exercise tests and simulated laboratory triathlon. The latter test consisted of swimming (S), cycling (C) and running (R) stages as a continuous task using a flume-pool, a cycle ergometer and a treadmill, respectively. The exercise intensity and duration were 60% of VO2max during swimming, cycling and running for 30, 75 and 45 min, respectively. The index of economy was determined by the % VO2max at the last min of each stage during a simulated laboratory test triathlon. Results indicated that Olympic distance triathlon (total time) was correlated to swimming-VO2max (r = -0.621, p < 0.001), cycling-VO2max (r = -0.873, p < 0.001), running-VO2max (r = -0.891, p < 0.001), S-Economy (r = 0.208, ns), C-Economy (r = 0.601, p < 0.001) and R-Economy (r = 0.769, p < 0.001). There were also significant correlations between swimming time and swimming-VO2max (r = -0.648, p < 0.01), between cycling time and cycling-VO2max (r = -0.819, p <0.001), between running time and running-VO2max (r = -0.726, p < 0.001), between swimming time and S-Economy (r = 0.550, p < 0.05), between cycling time and C-Economy (r = 0.613, p < 0.01), and between running time and R-Economy (r = 0.548, p < 0.05). These results demonstrated that the larger VO2max during maximal exercise tests and smaller increment of VO2 during a simulated laboratory test triathlon indicating good economy were good predictors to determine the Olympic distance triathlon.
本研究在模拟实验室铁人三项测试中，考察了奥运距离铁人三项（游泳超过1.5公里、骑行超过40.0公里、跑步超过10.0公里）与经济性之间的关系。17名男性铁人三项运动员进行了最大运动测试和模拟实验室铁人三项测试。后者的测试包括游泳（S）、骑行（C）和跑步（R）阶段，分别使用水槽泳池、自行车测力计和跑步机作为连续任务。游泳、骑行和跑步阶段的运动强度和持续时间分别为最大摄氧量（VO2max）的60%，持续30、75和45分钟。经济性指标由模拟实验室铁人三项测试中各阶段最后一分钟的VO2max百分比确定。结果表明，奥运距离铁人三项（总时间）与游泳-VO2max（r = -0.621，p < 0.001）、骑行-VO2max（r = -0.873，p < 0.001）、跑步-VO2max（r = -0.891，p < 0.001）、游泳经济性（S-Economy，r = 0.208，无显著性差异）、骑行经济性（C-Economy，r = 0.601，p < 0.001）和跑步经济性（R-Economy，r = 0.769，p < 0.001）相关。游泳时间与游泳-VO2max（r = -0.648，p < 0.01）、骑行时间与骑行-VO2max（r = -0.819，p <0.001）、跑步时间与跑步-VO2max（r = -0.726，p < 0.001）、游泳时间与S-Economy（r = 0.550，p < 0.05）、骑行时间与C-Economy（r = 0.613，p < 0.01）以及跑步时间与R-Economy（r = 0.548，p < 0.05）之间也存在显著相关性。这些结果表明，最大运动测试中较大的VO2max以及模拟实验室铁人三项测试中较小的VO2增量（表明良好的经济性）是预测奥运距离铁人三项的良好指标。
