Reactive agility is about reacting to a stimulus. It could be a coach's verbal cue, a gesture, a ball or an opponent.
Application of a Reactive Agility Training Program Using Light-Based Stimuli to Enhance the Physical and Cognitive Performance of Car Racing Drivers: A Randomized Controlled Trial, Sports Medicine - Open
Agility
Agility and change-of-direction speed are two different abilities also during the execution of repeated trials and in fatigued conditions
Turicum Athletics
Reactive agility: The key to bullet dodging success - FasterCapital
Blog, Agility and Change-of-Direction
Frontiers Importance of Reactive Agility and Change of Direction Speed in Differentiating Performance Levels in Junior Soccer Players: Reliability and Validity of Newly Developed Soccer-Specific Tests
Skill-Related Fitness Components and Athletic Performance
Sports, Free Full-Text
Agility Training vs Change Of Direction
Why 'Reactive Agility' Is Important for Athletes—And How You Can Train It - stack
Y Shaped Reactive Agility Test