Cybex is known for its innovative and ongoing research in the areas of physiology, biomechanics, and anatomy, and the Arc Trainer was developed from this passion and pursuit. The 600A boasts superior biomechanics designed to transmit the least amount of stress to ankle, knee, and hip joints, while maintaining the highest level of performance, and footplates that incline along an adjustable arc of motion in a bilateral, reciprocal movement, which provides a smooth exercise experience. A resistance range from 0 to 900 watts accommodates a wide variety of users, from novices to the most dedicated athletes, by yielding a lower work rate and relaxed feel at low resistance levels, and providing high intensity training, with greater muscle loads, at higher resistance settings.