Fitness and Training PHYSIOLOGICAL VARIABLES TO PREDICT PERFORMANCE IN CROSS-COUNTRY MOUNTAIN BIKE RACES
Fitness and Training PHYSIOLOGICAL VARIABLES TO PREDICT PERFORMANCE IN CROSS-COUNTRY MOUNTAIN BIKE RACES
复制标题
用于预测越野山地自行车比赛表现的健身和训练生理变量
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Lesley J. White
中科院分区：
文献类型：
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作者：
T. Boone;L. Dalleck;E. Goulet;R. Gotshall;M. Knight;L. Kravitz;J. Laskin;Derek W. Marks;Cristine Mermier;R. Robergs;J. Siegler;Greg Tardie;C. Vella;Lesley J. White
科斯塔副总裁，德奥利维拉FR。生理变量来预测越野山地自行车比赛的表现。JEPonline 2008;11（6）：14-24.山地自行车（MTB）是一项最近的运动，从自行车运动中衍生出来，关于运动员和比赛的信息很少。本研究旨在探讨优秀山地自行车运动员在奥运越野赛中的形态-生理特征及与运动成绩相关的生理变量。本研究纳入了6名精英山地自行车运动员（26.5 ± 0.6岁; 69.1 ± 2.1 kg; 174.0 ± 1.2 cm;估计的5.9± 0.9%体脂; 9.0 ± 1.3年训练）。参与者被提交到Wingate测试和渐进式练习。然后，他们在XCO世界杯和XCO巴西全国锦标赛期间进行了评估。结果表明，骑手呈现出与国际运动员相似的形态特征。然而，次最大和最大功率输出较低。最大功率输出（Wmax）相对于体重显着相关的性能在两个种族。第二乳酸阈值（WLL 2）的功率仅在XCO世界杯中显着相关时，归一化为质量指数0.79。因此，本研究结果为Wmax和WLL 2在山地自行车运动员生理评估中的应用提供了支持。此外，身体尺寸应考虑到评价越野自行车运动员。
Costa VP, De-Oliveira FR. Physiological variables to predict performance in cross-country mountain bike races. JEPonline 2008;11(6):14-24. Mountain bike (MTB) is a recent sport derived from cycling with little information about the athletes and races. The aim of this study was to identify the morph-physiological characteristics in Elite MTB athletes and the physiological variables associated in performance during Cross-country Olympic (XCO) races. Six Elite mountain bikers (26.5 ± .6 years; 69.1 ± 2.1 kg; 174.0 ± 1.2 cm; 5.9±0.9 % body fat estimated; 9.0 ± 1.3 years of training) were included in this study. The participants were submitted to the Wingate test and an incremental progressive exercise. Then they were evaluated during the XCO World Cup and XCO Brazilian National Championship. The results indicate that riders presented similar morphologic characteristics to the international athletes. However, the sub-maximal and maximal power outputs are lower. The maximal power output (Wmax) relative to body mass was significantly associated with performance in two races. The power at second lactate threshold (WLL2) was only significantly correlated in XCO World Cup when normalized to exponent of mass 0.79. Therefore, the results of this study provide the support to the use of the Wmax and WLL2 in the physiological assessments of mountain bikers. Furthermore, the body size should be taken into account to evaluate off road cyclists.