RT Journal Article SR Electronic A1 Blamey, Helen A1 Lawson, Janet A1 Shirazipour, Celina H. T1 The Invictus Games Categorisation System: A framework for adapted sports JF European Journal of Adapted Physical Activity YR 2024 VO 17 IS 1 SP 13 OP 13 DO 10.5507/euj.2024.010 UL https://eujapa.upol.cz/artkey/euj-202401-0011.php AB Categorisation (also called classification) systems are a fundamental part of adapted sports. While current systems seek to promote fair participation, they may also conversely prevent individuals experiencing diverse and complex physical and psychological illnesses and injuries from engaging in adapted sports. Drawing on the experiences and perspectives of stakeholders working with the Invictus Games Foundation, this paper describes the Invictus Games categorisation system, an innovative framework for non-elite adapted sport competition that seeks to integrate individuals experiencing these diverse conditions. We review (a) the development of the categorisation system; (b) the categorisation process; and (c) the training of categorisers. The paper further highlights how these developments were influenced by recent advances in our understanding of the impact of pain-based impairments as well as psychological illnesses and injuries. Additionally, we present critical implications for organisations seeking to develop or refine categorisation systems to expand access to non-elite adapted sport competition. Our aim is for this paper to serve as a practical guide for stakeholders, researchers and practitioners.