Directorate of Sport, Exercise and Physiotherapy, University of Salford, Salford, Greater Manchester, United Kingdom.
School of Health, Sport and Professional Practice, University of South Wales, Pontypridd, Wales, United Kingdom.
J Strength Cond Res. 2019 Aug;33(8):2138-2144. doi: 10.1519/JSC.0000000000002346.
Cuthbert, M, Thomas, C, Dos'Santos, T, and Jones, PA. Application of change of direction deficit to evaluate cutting ability. J Strength Cond Res 33(8): 2138-2144, 2019-The purpose of this study was to examine the application of the change of direction deficit (CODD) to a 90° cut test to examine whether CODD provides a unique evaluation of an individual's cutting ability. Thirty-six male collegiate team-sport (23 Rugby/13 Soccer) athletes (age: 20 ± 1.4 years; height: 1.80 ± 0.08 m; mass: 83 ± 13.2 kg) participated in the study. Each athlete performed 3 trials of a 20-m sprint (with 5 and 10 m splits) and 2 change of direction (COD) tests (90° cut and 505 tests) cutting/turning from both legs. Completion times for all sprint and COD tests were measured using timing cells. For both COD tests, CODD was determined (COD completion time-10 m sprint time). Pearson correlation was used to explore the relationships between sprint times and CODD and completion times. Significant (p < 0.001) moderate-to-large (r ≥ 0.467) correlations between sprint times and 90° cut completion times for left and right cuts were observed. Nonsignificant (p > 0.05) trivial-to-small correlations (r ≤ 0.199) were found between sprint variables and 90° cut CODD. Significant (p < 0.001) large to very large correlations (r ≥ 0.531) were revealed between the left and right 90° cut and 90° cut CODD. The results suggest that the CODD could be applied to isolate and assess the cutting ability in COD speed tests that involve a single cutting maneuver. Failure to inspect CODD could lead to incorrect evaluation of an athletes cutting or COD ability.
卡斯伯特、托马斯、多斯桑托斯和琼斯。应用变向不足评估切割能力。J 力量与条件研究 33(8):2138-2144,2019-本研究旨在探讨变向不足（CODD）在 90°切割测试中的应用，以检验 CODD 是否能对个体的切割能力进行独特的评估。36 名男性大学生团队运动（23 名橄榄球/13 名足球）运动员（年龄：20±1.4 岁；身高：1.80±0.08 m；体重：83±13.2 kg）参与了研究。每位运动员进行了 3 次 20 米冲刺（5 米和 10 米分段）和 2 次变向（COD）测试（90°切割和 505 测试），双腿交替切割/转弯。使用计时单元测量所有冲刺和 COD 测试的完成时间。对于两个 COD 测试，确定了 CODD（COD 完成时间-10 米冲刺时间）。使用皮尔逊相关系数来探索冲刺时间和 CODD 与完成时间之间的关系。对于左、右切割的 90°切割完成时间，观察到冲刺时间与 CODD 之间具有显著（p<0.001）的中度至高强度（r≥0.467）相关性。在冲刺变量和 90°切割 CODD 之间发现了不显著（p>0.05）的微小至小相关性（r≤0.199）。左、右 90°切割和 90°切割 CODD 之间存在显著（p<0.001）的大到非常大相关性（r≥0.531）。结果表明，CODD 可应用于涉及单一切割动作的 COD 速度测试中，以隔离和评估切割能力。如果不检查 CODD，则可能导致对运动员切割或 COD 能力的错误评估。
