Int J Sports Physiol Perform. 2018 Apr 1;13(4):452-458. doi: 10.1123/ijspp.2017-0183. Epub 2018 May 11.
To describe pacing strategy and competitive behavior in elite-level cyclo-cross races.
Data from 329 men and women competing in 5 editions (2012-2016) of Union Cycliste Internationale Cyclo-Cross World Championships were compiled. Individual mean racing speeds from each lap were normalized to the mean speeds of the whole race. Lap and overall rankings were also explored. Pacing strategy was compared between sexes and between top- and bottom-placed cyclists.
A significant main effect of laps was found in 8 out of 10 races (4 positive, 3 variable, 2 even, and 1 negative pacing strategies), and an interaction effect of ranking-based groups was found in 2 (2016, male and female races). Kendall tau-b correlations revealed an increasingly positive relationship between intermediate and overall rankings throughout the races. The number of overtakes during races decreased from start to finish, as suggested by significant Friedman tests. In the first lap, normalized cycling speeds were different in 3 out of 5 editions-men were faster in 1 and slower in 2 editions. In the last lap, however, normalized cycling speeds of men were lower than those of women in 4 editions.
Elite cyclo-cross competitors adopt slightly distinct pacing strategies in each race, but positive pacing strategies are highly probable in most events, with more changes in rankings during the first laps. Sporadically, top- and bottom-placed groups might adopt different pacing strategies during either men's or women's races. Men and women seem to distribute their efforts differently, but this effect is of small magnitude.
描述精英级自行车越野赛中的配速策略和竞争行为。
编译了参加 5 届（2012-2016 年）国际自行车联盟自行车越野世界锦标赛的 329 名男子和女子的数据。每圈的个体平均比赛速度被归一化为整个比赛的平均速度。还探讨了圈速和总成绩排名。比较了男女之间以及顶尖和垫底车手之间的配速策略。
在 10 场比赛中的 8 场比赛中发现了显著的圈次主效应（4 种正性、3 种变速、2 种均匀和 1 种负性配速策略），在 2 场比赛中发现了基于排名的分组的交互效应（2016 年，男、女比赛）。Kendall tau-b 相关分析表明，整个比赛中中间排名和总成绩排名之间的关系越来越正。比赛中超越的次数从开始到结束呈减少趋势，这表明 Friedman 检验具有显著意义。在第一圈，有 5 个版本中的 3 个版本中，男子的归一化骑行速度更快-在 1 个版本中更快，在 2 个版本中更慢。然而，在最后一圈，男子的归一化骑行速度在 4 个版本中低于女子。
精英自行车越野赛选手在每场比赛中采用略微不同的配速策略，但在大多数比赛中，正性配速策略很有可能发生，前几圈的排名变化较大。偶尔，男女比赛中顶尖和垫底的分组可能采用不同的配速策略。男子和女子似乎以不同的方式分配他们的努力，但这种影响很小。
