McLain Trisha A, Wright Glenn A, Camic Clayton L, Kovacs Attila J, Hegge Jacob M, Brice Glenn A
Departments of 1Exercise and Sport Science; and 2Biology, Human Performance Laboratory, University of Wisconsin-La Crosse, La Crosse, Wisconsin.
J Strength Cond Res. 2015 Aug;29(8):2197-204. doi: 10.1519/JSC.0000000000000854.
The purpose of this study was to determine the test-retest reliability of a newly developed anaerobic sprint running test (ASRT) on a nonmotorized treadmill (NMT). Twenty-six collegiate male athletes (21.2 ± 2.1 years; 181.3 ± 6.5 cm; 79.0 ± 9.3 kg) completed 3 trials of a 25-second maximal effort sprint on an NMT against a workload set to 18% of their individual body mass. Anaerobic power was determined by relative peak power output (PP) and anaerobic capacity was determined by relative mean power output (MP) during the test. Blood lactate (BLa) responses and fatigue index (FI) were also determined. Test-retest reliability was assessed by intraclass correlation coefficients (ICCs) and coefficients of variation (CV%). Results indicated no significant difference between the 3 trials for PP (T1 = 29.95 ± 6.51 W·kg(-1), T2 = 28.57 ± 5.55 W·kg(-1), T3 = 29.47 ± 5.94 W·kg(-1)), MP (T1 = 20.97 ± 3.64 W·kg(-1), T2 = 20.50 ± 3.46 W·kg(-1), T3 = 21.17 ± 3.79 W·kg(-1), and FI (T1 = 55 ± 8%, T2 = 51 ± 8%, T3 = 52 ± 9%). Reliability between the 3 trials for PP (ICC: r = 0.96, CV: 7%) and MP (ICC: r = 0.97, CV: 6%) was considered high. Reliability for FI exhibited an ICC of r = 0.83 (CV: 6%). Postsprint BLa values were not significantly different (p = 0.49) between the 3 trials. Test-retest reliability for postsprint BLa was found to be good (r = 0.68, CV = 8.8%). The results of the study indicate that the ASRT is reliable for assessing PP and MP in highly motivated subjects. In addition, anaerobic testing using the ASRT may be a more sport-specific test to assess anaerobic performance for many coaches and athletes.
本研究的目的是确定一种新开发的非电动跑步机（NMT）上的无氧冲刺跑测试（ASRT）的重测信度。26名大学男运动员（21.2±2.1岁；181.3±6.5厘米；79.0±9.3千克）在NMT上以设定为其个体体重18%的负荷完成了3次25秒全力冲刺试验。测试期间，无氧功率由相对峰值功率输出（PP）确定，无氧能力由相对平均功率输出（MP）确定。还测定了血乳酸（BLa）反应和疲劳指数（FI）。通过组内相关系数（ICC）和变异系数（CV%）评估重测信度。结果表明，PP在3次试验之间无显著差异（T1 = 29.95±6.51 W·kg⁻¹，T2 = 28.57±5.55 W·kg⁻¹，T3 = 29.47±5.94 W·kg⁻¹），MP（T1 = 20.97±3.64 W·kg⁻¹，T2 = 20.50±3.46 W·kg⁻¹，T3 = 21.17±3.79 W·kg⁻¹）和FI（T1 = 55±8%，T2 = 51±8%，T3 = 52±9%）。PP（ICC：r = 0.96，CV：7%）和MP（ICC：r = 0.97，CV：6%）在3次试验之间的信度被认为较高。FI的信度ICC为r = 0.83（CV：6%）。冲刺后BLa值在3次试验之间无显著差异（p = 0.49）。发现冲刺后BLa的重测信度良好（r = 0.68，CV = 8.8%）。研究结果表明，ASRT在评估积极性高的受试者的PP和MP方面是可靠的。此外，使用ASRT进行无氧测试对于许多教练和运动员来说可能是一种更具运动特异性的测试无氧能力的方法。
