Faculty of Kinesiology, Sport and Recreation, University of Alberta, Edmonton, Alberta, Canada.
Alberta Diabetes Institute, University of Alberta, Edmonton, Canada.
PLoS One. 2024 Sep 6;19(9):e0307325. doi: 10.1371/journal.pone.0307325. eCollection 2024.
Determining an athlete's maximal peak power (MPP) is crucial in profiling endurance sports participants. While short (3 to 6 seconds) all-out efforts have been validated for MPP assessment, prior studies mainly involved non-endurance trained athletes. This study aimed to assess the intra- and inter-day reliability of a 6-second Wingate test for MPP determination in endurance athletes. Endurance-trained participants (22 males, 5 females) completed nine 6-second Wingate tests over four days (3 trials at baseline, 2 trials on each subsequent day). Analysis revealed no systematic differences in MPP (F(4.09, 106.3) = 1.88, p = 0.117) or time to peak power (χ2 (8) = 5.23, p = 0.732) across the trials. Reliability, assessed through the intraclass correlation coefficient (ICC) and standard error of measurement (SEM), was excellent across all trials (ICC = 0.95, SEM = 40.0W, SEM% = 3.7%). Absolute reliability improved when selecting the average or the best MPP values from each day (SEM% = 2.7% and 2.9%, respectively). Within-day reliability was consistently rated as excellent, with the best values on the 4th day of tests. No significant differences in MPP values occurred between the first and second 6-second Wingate tests on days 1 to 3, with both trials demonstrating similar reliability values (SEM%: 3.2% vs 2.8%, for the first and second trials, respectively). The test also demonstrated a good sensitivity to detect a meaningful change in MPP values. In conclusion, the 6-second Wingate test proves reliable for determining MPP in endurance-trained athletes. Two trials are recommended on the first day of testing, with a single MPP likely sufficient to determine the athlete's MPP on subsequent days.
确定运动员的最大峰值功率（MPP）对于耐力运动员的表现评估至关重要。虽然 3 至 6 秒的全力冲刺已被验证可用于 MPP 评估，但之前的研究主要涉及非耐力训练的运动员。本研究旨在评估 6 秒 Wingate 测试在耐力运动员中确定 MPP 的日内和间日可靠性。耐力训练的参与者（22 名男性，5 名女性）在四天内完成了九次 6 秒 Wingate 测试（基线 3 次试验，随后两天各 2 次试验）。分析显示，在试验中，MPP（F(4.09, 106.3) = 1.88, p = 0.117）或达到最大功率的时间（χ2 (8) = 5.23, p = 0.732）没有系统差异。通过组内相关系数（ICC）和测量误差（SEM）评估的可靠性在所有试验中均为优秀（ICC = 0.95，SEM = 40.0W，SEM% = 3.7%）。当从每天的测试中选择平均或最佳 MPP 值时，绝对可靠性会提高（SEM% = 2.7% 和 2.9%）。日内可靠性始终被评为优秀，最佳值出现在测试的第 4 天。在第 1 天至第 3 天，第 1 次和第 2 次 6 秒 Wingate 测试之间的 MPP 值没有显著差异，两次试验的可靠性值相似（SEM%：第 1 次和第 2 次试验分别为 3.2%和 2.8%）。该测试还具有良好的灵敏度，可检测 MPP 值的有意义变化。总之，6 秒 Wingate 测试在确定耐力训练运动员的 MPP 方面是可靠的。建议在测试的第 1 天进行两次试验，随后几天单次 MPP 可能足以确定运动员的 MPP。
