Picha Kelsey, Quintana Carolina, Glueck Amanda, Hoch Matt, Heebner Nicholas R, Abt John P
J Sport Rehabil. 2018 Sep 1;27(5):1-4. doi: 10.1123/jsr.2018-0042. Epub 2018 Sep 4.
Reaction time (RT) is crucial to athletic performance. Therefore, when returning athletes to play following injury, it is important to evaluate RT characteristics ensuring a safe return. The Dynavision D2® system may be utilized as an assessment and rehabilitation aid in the determination of RT under various levels of cognitive load. Previous research has demonstrated good reliability of simple protocols when assessed following a 24- to 48-hour test-retest window. Expanding reliable test-retest intervals may further refine novel RT protocols for use as a diagnostic and rehabilitation tool.
To investigate the test-retest reliability of a battery of 5 novel RT protocols at different time intervals.
Repeated measures/reliability.
Interdisciplinary sports medicine research laboratory.
Thirty healthy individuals.
Participants completed a battery of protocols increasing in difficulty in terms of reaction speed requirement and cognitive load. Prior to testing, participants were provided 3 familiarization trials. All protocols required participants to hit as many lights as quickly as possible in 60 seconds. After completing the initial testing session (session 1), participants waited 1 hour before completing the second session (session 2). Approximately 2 weeks later (average 14 [4] d), the participants completed the same battery of tasks for the third session (session 3).
The intraclass correlation coefficient, standard error of measurement, minimal detectable change, and repeated-measures analysis of variance were calculated for RT.
The intraclass correlation coefficient values for each of the 5 protocols illustrated good to excellent reliability between sessions 1, 2, and 3 (.75-.90). There were no significant differences across time points (F < 0.105, P > .05).
The 1-hour and 14-day test-retest intervals are reliable for clinical assessment, expanding the time frames previously reported in the literature of when assessments can be completed reliably. This study provides novel protocols that challenge cognition in unique ways.
反应时间（RT）对运动表现至关重要。因此，运动员受伤后恢复比赛时，评估反应时间特征以确保安全回归很重要。Dynavision D2®系统可作为一种评估和康复辅助工具，用于在不同认知负荷水平下测定反应时间。先前的研究表明，在24至48小时的重测窗口后评估时，简单方案具有良好的可靠性。扩大可靠的重测间隔可能会进一步完善新型反应时间方案，用作诊断和康复工具。
研究一系列5种新型反应时间方案在不同时间间隔下的重测可靠性。
重复测量/可靠性研究。
跨学科运动医学研究实验室。
30名健康个体。
参与者完成一系列方案，这些方案在反应速度要求和认知负荷方面难度逐渐增加。在测试前，为参与者提供3次熟悉试验。所有方案都要求参与者在60秒内尽可能快地击中尽可能多的灯光。完成初始测试 session 1后，参与者等待1小时，然后完成第二个 session 2。大约2周后（平均14[4]天），参与者完成相同的一系列任务用于第三个 session 3。
计算反应时间的组内相关系数、测量标准误差、最小可检测变化和重复测量方差分析。
5种方案中每种方案的组内相关系数值表明，在 session 1、2和3之间具有良好至优秀的可靠性（0.75 - 0.90）。各时间点之间无显著差异（F < 0.105，P > 0.05）。
1小时和14天的重测间隔对于临床评估是可靠的，扩展了先前文献中报道的能够可靠完成评估的时间范围。本研究提供了以独特方式挑战认知的新型方案。
