University of Brighton, School of Sport and Service Management, Eastbourne, UK.
J Sports Sci. 2013;31(5):565-72. doi: 10.1080/02640414.2012.744077. Epub 2012 Nov 26.
The aims of this study were to determine the reliability of an intermittent-sprint cycling protocol and to determine the efficacy of one practice session on main trials. Eleven men, moderately trained team-sport athletes, completed three visits to the laboratory involving a graded-exercise test and practice session and two trials of a cycling intermittent-sprint Protocol separated by three days. Data for practice and main trials were analysed using typical error of measurement, intra-class correlation and least-products regression to determine reliability. Typical error of measurement (expressed as a coefficient of variation) and intra-class correlation for peak power output from all 20 sprints for trial 1 and trial 2 were 2.9 ± 12.8% (95% confidence interval: 2.0-5.0%) and 0.96 (95% confidence interval: 0.85-0.99), respectively. Typical errors of measurement and intra-class correlation for mean power output for all 20 sprints for trials 1 and 2 were 4.2 ± 11.9% (95% confidence interval: 2.9-7.4%) and 0.90 (95% confidence interval: 0.66-0.97), respectively. The results suggest that peak power output provides a more reliable measure than mean power output. The Cycling Intermittent-Sprint Protocol provides reliable measures of intermittent-sprint performance.
本研究的目的是确定间歇冲刺循环方案的可靠性，并确定一次练习对主要试验的效果。11 名中等训练水平的团队运动运动员完成了三次实验室访问，包括递增负荷测试和练习以及三天后两次循环间歇冲刺方案试验。使用典型误差测量、组内相关和最小二乘法回归分析来确定可靠性，对练习和主要试验的数据进行分析。试验 1 和试验 2 中所有 20 次冲刺的峰值功率输出的典型误差（表示为变异系数）和组内相关分别为 2.9±12.8%（95%置信区间：2.0-5.0%）和 0.96（95%置信区间：0.85-0.99）。试验 1 和试验 2 中所有 20 次冲刺的平均功率输出的典型误差和组内相关分别为 4.2±11.9%（95%置信区间：2.9-7.4%）和 0.90（95%置信区间：0.66-0.97）。结果表明，峰值功率输出比平均功率输出提供更可靠的测量。循环间歇冲刺方案提供了可靠的间歇冲刺性能测量。
