Stewart P F, Turner A N, Miller S C
London Sport Institute, Middlesex University, London, UK.
Scand J Med Sci Sports. 2014 Jun;24(3):500-6. doi: 10.1111/sms.12019. Epub 2012 Nov 23.
Change of direction speed (CODS) is often considered a main determinant of successful performance in many team sports and is routinely measured using field-based tests. However, controversy regarding test selection still exists based upon the reliability and specificity of the tests. The purpose of this study was to determine and compare the reliability, factorial validity, and interrelationships of five frequently used CODS tests (Illinois, L-Run, Pro-Agility, T-test, and 505). Forty-four physical education students (male n = 24; female n = 20; age; 16.7 ± 0.6), who compete within team sports, to varying levels of competition, participated in this study. Three trials for each of the five tests were recorded. All tests had high (intraclass correlation coefficient) test-retest reliability (r = 0.88-0.95) and low typical percentage error (1.95-2.40%). The principle component factor analysis resulted in the extraction of one significant component which explained 89.52% of the total variance. All selected tests were positively and strongly correlated (r = 0.84-0.89). Based upon the results of this study, it was concluded that all tests are highly reliable and valid measures of CODS, with all tests assessing a general athletic ability to change direction. Future research should investigate the factorial validity of the CODS test within homogenous samples.
变向速度（CODS）通常被认为是许多团队运动中成功表现的主要决定因素，并且通常使用基于场地的测试进行测量。然而，基于测试的可靠性和特异性，关于测试选择的争议仍然存在。本研究的目的是确定并比较五种常用的CODS测试（伊利诺伊测试、左右跑测试、职业敏捷性测试、T型测试和505测试）的可靠性、因子效度和相互关系。44名参加团队运动、处于不同竞争水平的体育专业学生（男性n = 24；女性n = 20；年龄16.7±0.6岁）参与了本研究。记录了五项测试中每项测试的三次试验结果。所有测试均具有较高的（组内相关系数）重测可靠性（r = 0.88 - 0.95）和较低的典型百分比误差（1.95 - 2.40%）。主成分因子分析提取出一个显著成分，该成分解释了总方差的89.52%。所有选定的测试均呈正相关且相关性很强（r = 0.84 - 0.89）。基于本研究的结果，得出的结论是，所有测试都是CODS的高度可靠和有效的测量方法，所有测试都评估了一般的变向运动能力。未来的研究应该调查在同质样本中CODS测试的因子效度。
