Challenges and Opportunities in the Application of XR in Sport, Exercise, and Health. Extended reality (XR) is an umbrella term that captures any technology that alters our reality, usually by adding digital elements to a real or virtual visual scene. XR technologies, such as virtual reality (VR) can provide organisations and practitioners with new opportunities for addressing age old problems in sport and exercise settings. Possible applications include optimising training specificity, developing perceptual-cognitive skills like anticipation and decision-making, and enhancing injury and exercise rehabilitation in athletic and clinical populations. This talk will deliver research evidence on applications of XR for testing and training in sports and enhancing exercise experiences in clinical exercise rehabilitation and population health. We will reflect on the challenges in integrating XR solutions in sport and exercise settings and how we can address these challenges as the field moves forward.