Context: 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. Objective: To investigate the test–retest reliability of a battery of 5 novel RT protocols at different time intervals. Design: Repeated measures/reliability. Setting: Interdisciplinary sports medicine research laboratory. Participants: Thirty healthy individuals. Methods: 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  d), the participants completed the same battery of tasks for the third session (session 3). Main Outcome Measures: The intraclass correlation coefficient, standard error of measurement, minimal detectable change, and repeated-measures analysis of variance were calculated for RT. Results: 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). Conclusions: 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.
The authors are with Sports Medicine Research Institute, College of Health Sciences, University of Kentucky, Lexington, KY.
SpiteriT, CochraneJL, NimphiusS. The evaluation of a new lower-body reaction time test. . 2013;27(1):174–180. PubMed ID: 22362091 doi:10.1519/JSC.0b013e318250381f2236209110.1519/JSC.0b013e318250381f)| false
Eckner JT, Kutcher JS, Richardson JK. Effect of concussion on clinically measured reaction time in 9 NCAA division I collegiate athletes: a preliminary study. PM R. 2011;3(3):212–218. PubMed ID: 21402367 doi:10.1016/j.pmrj.2010.12.003
EcknerJT, KutcherJS, RichardsonJK. Effect of concussion on clinically measured reaction time in 9 NCAA division I collegiate athletes: a preliminary study. . 2011;3(3):212–218. PubMed ID: 21402367 doi:10.1016/j.pmrj.2010.12.00310.1016/j.pmrj.2010.12.003)| false
Schneider KJ, Iverson GL, Emery CA, McCrory P, Herring SA, Meeuwisse WH. The effects of rest and treatment following sport-related concussion: a systematic review of the literature. Br J Sports Med. 2013;47(5):304–307. PubMed ID: 23479489 doi:10.1136/bjsports-2013-092190
SchneiderKJ, IversonGL, EmeryCA, McCroryP, HerringSA, MeeuwisseWH. The effects of rest and treatment following sport-related concussion: a systematic review of the literature. . 2013;47(5):304–307. PubMed ID: 23479489 doi:10.1136/bjsports-2013-0921902347948910.1136/bjsports-2013-092190)| false
Taheri M, Arabameri E. The effect of sleep deprivation on choice reaction time and anaerobic power of college student athletes. Asian J Sports Med. 2012;3(1):15–20. PubMed ID: 22461961 doi:10.5812/asjsm.34719
TaheriM, ArabameriE. The effect of sleep deprivation on choice reaction time and anaerobic power of college student athletes. . 2012;3(1):15–20. PubMed ID: 22461961 doi:10.5812/asjsm.3471910.5812/asjsm.3471922461961)| false
Vesia M, Esposito J, Prime SL, Klavora P. Correlations of selected psychomotor and visuomotor tests with initial Dynavision performance. Percept Mot Skills. 2008;107(1):14–20. PubMed ID: 18986027 doi:10.2466/pms.107.1.14-20