Lockie Robert G, Farzad Jalilvand, Orjalo Ashley J, Giuliano Dominic V, Moreno Matthew R, Wright Glenn A
1Department of Kinesiology, California State University, Northridge, California; and 2Department of Exercise and Sport Science, University of Wisconsin-La Crosse, La Crosse, Wisconsin.
J Strength Cond Res. 2017 Feb;31(2):539-547. doi: 10.1519/JSC.0000000000001490.
Lockie, RG, Jalilvand, F, Orjalo, AJ, Giuliano, DV, Moreno, MR, and Wright, GA. A methodological report: Adapting the 505 change-of-direction speed test specific to American football. J Strength Cond Res 31(2): 539-547, 2017-The 505 involves a 10-m sprint past a timing gate, followed by a 180° change-of-direction (COD) performed over 5 m. This methodological report investigated an adapted 505 (A505) designed to be football-specific by changing the distances to 10 and 5 yd. Twenty-five high school football players (6 linemen [LM]; 8 quarterbacks, running backs, and linebackers [QB/RB/LB]; 11 receivers and defensive backs [R/DB]) completed the A505 and 40-yd sprint. The difference between A505 and 0 to 10-yd time determined the COD deficit for each leg. In a follow-up session, 10 subjects completed the A505 again and 10 subjects completed the 505. Reliability was analyzed by t-tests to determine between-session differences, typical error (TE), and coefficient of variation. Test usefulness was examined via TE and smallest worthwhile change (SWC) differences. Pearson's correlations calculated relationships between the A505 and 505, and A505 and COD deficit with the 40-yd sprint. A 1-way analysis of variance (p ≤ 0.05) derived between-position differences in the A505 and COD deficit. There were no between-session differences for the A505 (p = 0.45-0.76; intraclass correlation coefficient = 0.84-0.95; TE = 2.03-4.13%). Additionally, the A505 was capable of detecting moderate performance changes (SWC0.5 > TE). The A505 correlated with the 505 and 40-yard sprint (r = 0.58-0.92), suggesting the modified version assessed similar qualities. Receivers and defensive backs were faster than LM in the A505 for both legs, and right-leg COD deficit. Quarterbacks, running backs, and linebackers were faster than LM in the right-leg A505. The A505 is reliable, can detect moderate performance changes, and can discriminate between football position groups.
洛基、RG、贾利万德、F、奥尔贾洛、AJ、朱利亚诺、DV、莫雷诺、MR和赖特、GA。一份方法学报告：改编适用于美式橄榄球的505变向速度测试。《力量与体能研究杂志》31(2): 539 - 547, 2017年——505测试包括冲刺跑过一个计时门10米，然后在5米距离内完成180°变向（COD）。本方法学报告研究了一种改编后的505（A505），通过将距离改为10码和5码使其专门针对橄榄球运动。25名高中橄榄球运动员（6名前锋[LM]；8名四分卫、跑卫和线卫[QB/RB/LB]；11名外接手和防守后卫[R/DB]）完成了A505测试和40码冲刺跑。A505测试成绩与0至10码用时的差值确定了每条腿的变向不足。在后续测试中，10名受试者再次完成A505测试，10名受试者完成505测试。通过t检验分析可靠性，以确定不同测试时段之间的差异、典型误差（TE）和变异系数。通过TE和最小有价值变化（SWC）差异来检验测试的有效性。计算了皮尔逊相关性，以确定A505与505之间以及A505与变向不足和与40码冲刺跑之间的关系。采用单向方差分析（p≤0.05）得出A505测试成绩和变向不足在不同位置组之间的差异。A505测试在不同测试时段之间没有差异（p = 0.45 - 0.76；组内相关系数 = 0.84 - 0.95；TE = 2.03 - 4.13%）。此外，A505能够检测到中等程度的成绩变化（SWC0.5>TE）。A505与505测试和40码冲刺跑相关（r = 0.58 - 0.92），表明修改后的版本评估的是相似的素质。在A505测试中，外接手和防守后卫的双腿以及右腿变向不足的成绩都比前锋快。四分卫、跑卫和线卫在右腿A505测试中的成绩比前锋快。A505测试可靠，能够检测到中等程度的成绩变化，并且能够区分不同橄榄球位置组。
