Research on RPE (Rating of Perceived Exertion) focuses on understanding how individuals perceive and respond to physical exertion during exercise or physical activity. RPE is a subjective measure that assesses an individual's perception of effort or intensity during physical tasks. Researchers in this area seek to determine how factors such as fitness level, environmental conditions, and psychological factors influence perceived exertion and performance outcomes. By understanding RPE, researchers can better tailor exercise programs and interventions to optimize performance and improve overall physical well-being.