Abstract: A system and particular components are disclosed to measure the reaction time of a user from a signal to start an athletic activity to the start of that activity and the completion time from the start to the finish of that activity. A remote control device responsive to manual input initiates a start signal and a signal to direct that activity toward one or more sensor pads to a user and to a data processor. One or more floor pads sense the presence of the user and signal the user's non-presence to the data processor. One or more sensor pads positioned spacedly distant from the floor pads sense manual contact by the user and signal that event to the data processor. The data processor determines the reaction time and the completion time of an activity from the times of the received signals, annunciates these times in visually cognizable form and stores the data.