The milon Q+ Leg Extension is an electronically controlled leg extension machine designed primarily to train the four-headed thigh muscle (m. quadriceps femoris). The front thigh musculature is responsible for extending the legs and stabilizing the knee joint. The Q+ Leg Extension automatically adjusts the backrest and shin pad to the individual user so that the rotational axis between the user and the machine is correctly aligned, while the training resistance is adapted to the user’s strength. An EMG-optimized training position, guided movement and live feedback on the equipment display support optimal muscle activation and correct exercise execution. As part of the digitally networked milon Q+ system, the equipment supports individualized strength training for fitness, physiotherapy and health-training environments.