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Reliability of the dynavision™ d2 for assessing reaction time performance
Adam J Wells1, Jay R Hoffman1, Kyle S Beyer1
1Institute of Exercise Physiology & Wellness, University of Central Florida , Orlando, FL 32816.
Journal of Sports Science & Medicine
|February 27, 2014
Summary
The Dynavision™ D2 device shows moderate to strong reliability for assessing visual and reactive reaction time in young adults. Adequate practice trials are crucial for accurate neuromuscular reactivity assessment.
Area of Science:
- Neuromuscular Physiology
- Human Performance Measurement
Background:
- The Dynavision™ D2 is a visuomotor training device used for reaction time (RT) assessment.
- Limited reliability data exists for the D2, particularly in generalizable populations.
Purpose of the Study:
- To determine the reliability of the Dynavision™ D2 using intraclass correlation coefficients (ICC2,1).
- To establish generalizable reliability data for recreationally active young adults.
Main Methods:
- Forty-two recreationally active adults completed 6 trials across three RT tasks with 48-hour intervals.
- Intraclass correlation coefficients (ICC2,1), standard error of measurement (SEM), and minimal differences (MD) were calculated.
Main Results:
- Moderate to strong reliability was found for visual RT (ICC2,1: 0.84) and reactive ability (Mode A: ICC2,1: 0.75; Mode B: ICC2,1: 0.73).
- Fair reliability was observed for motor RT (ICC2,1: 0.63), and moderate reliability for average RT per hit (Mode A: ICC2,1: 0.68; Mode B: ICC2,1: 0.72).
- One familiarization trial is recommended for choice reaction time, and three for reactive ability tasks.
Conclusions:
- The Dynavision™ D2 is a reliable tool for assessing neuromuscular reactivity in recreationally active young adults.
- Adequate familiarization and practice are essential for obtaining reliable baseline scores.
- Training effects should be considered in repeated assessments.
