Int J Sports Physiol Perform. 2018 Jul 1;13(6):795-801. doi: 10.1123/ijspp.2017-0664. Epub 2018 Jul 12.
The technological advancements in motorcycle road racing have ensured the evolution of motorcycle performance; however, it is unknown whether these advancements have resulted in increased speed and therefore risk. To better understand the top level of this sport and inform future regulations, performance-related strategies, and safety procedures, this study aimed to (1) analyze and describe how the performance characteristics of the top class of the Fédération Internationale de Motocyclisme Grand Prix motorcycle world championship (GPWC) have changed with time and (2) quantify potential interactions between performance data (ie, crashes, speed, and environmental conditions).
Variables such as top 10 riders' speed of racing, crashes, starting position of winner, participants, and environmental conditions were collected from official race reports from 1997 to 2016. Data standardization was also ensured by including only dry competitions in the analysis.
The mean racing speed ranged from a minimum of 155 (7.27) km·h (year 2000) to a maximum of 165 (6.48) km·h (year 2015). Linear mixed-model analysis revealed that the variables year and class significantly influenced changes in mean speed (faster racing). Per race, 12-14% of starters (95% confidence interval) suffered a crash. No significant associations were found between crashes and mean speed, ground temperature, air temperature, or air humidity.
The speed of dry racing of the top class of the GPWC has increased over a 20-y span. Motorcycle circuit racing riders should consider the importance of being prepared to cope with crashing events to minimize chances of injury.
摩托车公路赛的技术进步确保了摩托车性能的发展；然而，尚不清楚这些进步是否导致了速度的提高，从而增加了风险。为了更好地了解这项运动的顶级水平，并为未来的法规、相关性能策略和安全程序提供信息，本研究旨在：（1）分析和描述国际摩托车运动联合会大奖赛（GPWC）顶级摩托车的性能特征随时间的变化；（2）量化性能数据（即撞车、速度和环境条件）之间的潜在相互作用。
从 1997 年至 2016 年的官方比赛报告中收集了诸如前 10 名骑手的比赛速度、撞车事故、冠军的起跑位置、参赛选手和环境条件等变量。通过仅包括干燥比赛进行数据分析，还确保了数据的标准化。
平均比赛速度从 2000 年的最低 155（7.27）km·h 到 2015 年的最高 165（6.48）km·h 不等。线性混合模型分析显示，变量年份和级别显著影响平均速度的变化（比赛速度加快）。每场比赛，12-14%的发车选手（95%置信区间）发生撞车事故。未发现撞车事故与平均速度、地面温度、空气温度或空气湿度之间存在显著关联。
在 20 年的时间跨度内，GPWC 顶级摩托车的干燥比赛速度有所提高。摩托车赛道赛车手应考虑到做好应对撞车事件的准备的重要性，以最大限度地降低受伤的机会。
