Doma Kenji, Connor Jonathan D, Nakamura Fabio Y, Leicht Anthony S
Sport and Exercise Science, James Cook University, Townsville, Queensland, Australia.
Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), University of Maia (ISMAI), Maia, Portugal.
J Hum Kinet. 2023 Jul 15;87:163-171. doi: 10.5114/jhk/163180. eCollection 2023 Jul.
This study examined the intra-session reliability of sprint performance on a non-motorized treadmill amongst healthy, active male and female adults. One hundred and twenty participants (males n = 77; females n = 45) completed two familiarization sessions, followed by a third session that consisted of three trials (T1, T2, T3) of maximal sprints (4-s), interspersed by three minutes of recovery. Combining males and females exhibited moderate-to-excellent test-retest reliability (intra-class correlation coefficient, ICC), minimal measurement error (coefficient of variation, CV) and trivial differences between trials (effect size, ES) for speed, power, total work and acceleration (ICC = 0.82-0.98, CV = 1.31-8.45%, ES = 0.01-0.22). The measurement error was improved between comparisons of T1 vs. T2 (CV = 1.62-8.45%, ES = 0.12-0.22) to T2 vs. T3 (CV = 1.31-6.56%, ES = 0.01-0.07) and better for females (CV = 1.26-7.94%, ES = 0.001-0.26) than males (CV = 1.33-8.53%, ES = 0.06-0.31). The current study demonstrated moderate-to-excellent reliability and good-moderate measurement error during a 4-s sprint on a non-motorized treadmill. However, sex had a substantial impact with females exhibiting better values. Practitioners should employ at least two separate trials within a session, in addition to multiple familiarization sessions, to achieve reliable non-motorized treadmill sprint performances.
本研究考察了健康、活跃的成年男性和女性在非电动跑步机上进行冲刺跑表现的组内可靠性。120名参与者（男性n = 77；女性n = 45）完成了两次适应性训练课程，随后进行第三次课程，其中包括三次最大冲刺跑（4秒）试验（T1、T2、T3），每次试验之间穿插三分钟的恢复时间。将男性和女性的数据合并后显示，速度、功率、总功和加速度的重测可靠性为中度至优秀（组内相关系数，ICC），测量误差最小（变异系数，CV），试验间差异微不足道（效应量，ES）（ICC = 0.82 - 0.98，CV = 1.31 - 8.45%，ES = 0.01 - 0.22）。与T1与T2的比较（CV = 1.62 - 8.45%，ES = 0.12 - 0.22）相比，T2与T3的比较测量误差有所改善（CV = 1.31 - 6.56%，ES = 0.01 - 0.07），女性的测量误差（CV = 1.26 - 7.94%，ES = 0.001 - 0.26）优于男性（CV = 1.33 - 8.53%，ES = 0.06 - 0.31）。本研究表明，在非电动跑步机上进行4秒冲刺跑时，可靠性为中度至优秀，测量误差为中等到良好。然而，性别有显著影响，女性表现出更好的值。除了多次适应性训练课程外，从业者在一次课程中应至少进行两次单独的试验，以获得可靠的非电动跑步机冲刺跑表现。
