Gunnar Borg

Gunnar Borg was a Swedish psychologist renowned for developing the Borg Rating of Perceived Exertion (RPE) scale, a tool that helps individuals gauge how hard they feel they are working during physical activity. This subjective scale typically ranges from 6 to 20, where higher numbers indicate greater effort. The Borg scale allows people to monitor exercise intensity without needing technical equipment, making it useful in sports, rehabilitation, and health assessments. His work emphasizes understanding personal perception of effort, which can reflect actual physical exertion and help optimize training and recovery.