Relationship Between Reactive Agility and Change of Direction Speed in Amateur Soccer PlayersMatlák, János; Tihanyi, József; Rácz, LeventeJournal of Strength & Conditioning Research: June 2016 - Volume 30 - Issue 6 - p 1547–1552 doi: 10.1519/JSC.0000000000001262 Original Research Abstract Author Information Abstract: Matlák, J, Tihanyi, J, and Rácz, L. Relationship between reactive agility and change of direction speed in amateur soccer players. J Strength Cond Res 30(6): 1547–1552, 2016—The aim of the study was to assess the relationship between reactive agility and change of direction speed (CODS) among amateur soccer players using running tests with four directional changes. Sixteen amateur soccer players (24.1 ± 3.3 years; 72.4 ± 7.3 kg; 178.7 ± 6 cm) completed CODS and reactive agility tests with four changes of direction using the SpeedCourt™ system (Globalspeed GmbH, Hemsbach, Germany). Countermovement jump (CMJ) height and maximal foot tapping count (completed in 3 seconds) were also measured with the same device. In the reactive agility test, participants had to react to a series of light stimuli projected onto a screen. Total time was shorter in the CODS test than in the reactive agility test (p < 0.001). Nonsignificant correlations were found among variables measured in the CODS, reactive agility, and CMJ tests. Low common variance (r2 = 0.03–0.18) was found between CODS and reactive agility test variables. The results of this study underscore the importance of cognitive factors in reactive agility performance and suggest that specific methods may be required for training and testing reactive agility and CODS. University of Physical Education, School of Ph.D. Studies, Budapest, Hungary Address correspondence to János Matlák, firstname.lastname@example.org. Copyright © 2016 by the National Strength & Conditioning Association.