A system for sensing and assessing movement, the system comprising a sensing arrangement for sensing movement in a space, the sensing arrangement comprising a plurality of sensors, at least some of which are adapted to sense movement on a surface and at least some of which are adapted to sense movement in a space； a receiving unit adapted to receive data from the sensing arrangement； a system for interpreting that data to provide an assessment of movement； an interface adapted to display that assessment of movement and provide a visual indicator of relative impact.
