Body impact evaluation system and wearable measurement system therefor

A measurement system for a wearable item comprising an electronic control system and an impact sensing system, the impact sensing system including a capacitive pressure sensing system comprising a plurality of capacitive sensors, the capacitive sensors comprising a deformable insulator layer and at least first and second electrodes on opposed sides of the deformable insulator layer, the capacitive sensors arranged in a distributed manner over a surface for covering a body part subject to impact, characterized in that the capacitive sensors comprise first and second deformable insulator layers separated by a third electrode, the first insulator layer having an elastic modulus that is different to an elastic modulus of the second insulator layer, or the first insulator layer having a thickness that is different to a thickness of the second insulator layer, the capacitive sensors configured to measure a pressure applied on a major surface of the sensor transverse to the stacking direction of the electrodes and deformable insulator layers.