Measuring Block Reaction Time in Volleyball Players Using a Novel and Accurate Reaction Time Measurement System

Athletes who spend more time planning and executing plays can anticipate the outcome of their reactions quickly accurately, thus increasing likelihood effective plays. Video stimuli that replicate real sports have been used to study players’ toward in various sports. However, low frame rates video previous studies resulted errors when measuring reaction time. Further, a display delay occurs experiments where computers are used. The purpose this was develop novel accurate measurement system solve these problems. A taken with high-speed camera as stimulus enable from keyframe response. marker displayed on computer screen during detected by photosensor attached compensate for delay. Using new system, required block maneuver volleyball players, known (BRT), measured 15 male collegiate players. BRTs were 0.214 ± 0.051, 0.616 0.150, 0.233 0.065 s against left, center, right attacks, respectively. shorter than those using light studies, probably because participants able predict direction ball toss cues gleaned setter’s preliminary movements.