Critical velocity estimates running velocity in a 10-km running race in recreational runners

Abstract The aim of this study was to compare the estimated running velocity in a critical velocity (CV) test with the real running velocity in a 10-km race. This is a cross-sectional study with a convenience sample of 34 runners, 20 males and 14 females (42,4 ± 11,0). The participants attended two days of testing and one day to participate in an official 10-km race. During the visits, the following tests were performed: i) 400-meter running track test and ii) 2000 meter running track test. They were randomly selected and held in official athletics track with at least 48 hours rest between them. The athletes were instructed to participate in the study properly recovered, fed and hydrated. The CV was calculated as the linear relation between distance and race time, corresponding to the slope of the linear regression line. Both tests occurred in similar climatic situations. We found good agreement between the velocities estimated through the CV test and the real running velocity of a 10-km race. Although there was a difference in velocities estimated by the CV test and the real 10-km race, the variation delta was low. Thus, these data indicate that the CV test seems to be a good tool for estimating the velocity of a 10-km race. The CV determined in the field with two fixed distances 400 and 2000 meter was valid to estimate the running velocity of a 10-km race.

摘要 本研究旨在对比临界速度（Critical Velocity, CV）测试所得的估算跑步速度与10公里正式赛事中的实际跑步速度。本研究为横断面研究，采用便利抽样法纳入34名跑步者，其中男性20名、女性14名，年龄为(42.4±11.0)岁。受试者需参与两次测试日与一次正式10公里赛事参与日。测试期间完成两项测试：i）400米跑道测试；ii）2000米跑道测试。两项测试随机安排于官方田径跑道开展，且两次测试间隔至少48小时的恢复时间。研究要求受试者在完全恢复、进食充足且水分充足的状态下参与本研究。临界速度以距离与赛事时长的线性关系计算，对应线性回归线的斜率。两项测试均在相似的气候条件下进行。结果显示，通过临界速度测试估算的速度与10公里赛事的实际跑步速度具有良好的一致性。尽管临界速度测试的估算速度与10公里实际赛事速度存在一定差异，但差值（delta）较小。综上，本研究数据表明临界速度测试可作为估算10公里赛事跑步速度的有效工具。通过两项固定距离（400米与2000米）的场地测试所得的临界速度，可有效估算10公里跑步赛事的速度。