This project aims to develop an intelligent, robot-enabled exercise system to implement Performance-Centric Co-Creation (PC³) training for elite athletes. The system integrates a robotic exercise machine capable of intelligent isokinetic, assistive-repetition and power training; multimodal sensing for offline assessment and real-time physiological, functional and performance monitoring; and a machine learning–driven digital twin for personalised planning, adaptation and evaluation. Laboratory and field trials at HKU and HKSI will assess effectiveness in enhancing strength, power and injury prevention, thereby enabling marginal gains in world-class performance.