Knowledge about sports performance is limited because most available data were obtained in the laboratory where the target action may differ somewhat from the actual sports action. In this talk I will introduce novel measurement techniques that involve using wearable sensors and virtual reality (VR) technology that can compensate for the above conventional reality problem. Wearable sensing is expected to provide novel findings for sports performance in actual sports environments. VR will prove useful as a novel measurement tool with which to purposely configure a visual environment that is inconceivable in the real world.