Expert consensus on classification and performance in Paralympic powerlifting: a Delphi study

Background: In Paralympic sports, classification ensures fair competition by grouping athletes based on their impairments. The International Paralympic Committee has provided scientific principles to guide evidence-based classification procedures. In Paralympic Powerlifting (PPO), athletes compete in one class, divided by sex and bodyweight categories, overlooking impairment impact on performance. Objective: This study aimed to establish a consensus among international PPO experts regarding classification and performance issues to guide future research. Methods: A two-round Delphi study was conducted involving 26 experts. The study sought to identify the adequacy of the current classification and competition systems, explore the impact of various impairments, and lay the initial groundwork for a performance determinants model. Results: Experts agreed that existing classification and competition systems in PPO do not align with Paralympic standards. Impairments from neurological conditions and those causing anthropometric changes were suggested to have opposing performance impacts. Initial directions for a performance determinants model were outlined, focusing on arm and bar kinematics, anthropometry, and body composition. Conclusions: This study underscores the need for comprehensive research in PPO, revealing critical discrepancies between current classification system and Paralympic standards. Insights into the multifaceted relationship between impairments and performance are provided to shape the future of PPO research.