Abstract: This device assists individuals training in the fighting arts, or athletes performing impacts or tackles in sports. It makes detailed measurements of the energy and force sustained by a target from an impact performed by a test subject and immediately displays feedback information showing the power and effectiveness of the impact performed. The device comprises: an impact target designed to provide a predetermined amount of resistance to the force of an impact, while allowing unrestricted linear displacement in the opposite direction of the force; a sensor means for detecting the velocity of target displacement at predetermined sampling intervals; an electronic interface to measure and store data received from the sensor means; application software residing in a computer processor, which receives stored data from the electronic interface, and interprets the data and; a computer to process software application instructions.