Combining elements of a climber, hiker, and skier, the Cybex 425A Arc Trainer produces gym-quality results in any environment, helping you get fit more efficiently than ever before. The machine accomplishes this through its Reverse Arc motion technology, which engages the muscles--the quads and glutes--that demand the most energy from the body when they're called upon to work. That means a higher intensity and a bigger calorie burn, giving you a complete workout in the shortest time possible. The Cybex 425A is also load-dependent, meaning that it scales the resistance level to the user's weight. This means that two users--one who weighs 250 pounds and the other 125 pounds--receive an equivalent workout when choosing the same program type.
The Cybex 425A offers multiple workout variations usually reserved only for the gym, including three exercise zones: a low position called the Glide (similar to a ski machine), a medium position called the Stride (similar to an elliptical trainer), and a high position called the Climb (similar to a stair climber). The zones team up with a broad incline and resistance range to emphasize almost every lower body muscle group, letting users determine the motion that best suits their fitness needs. For example, users can select a high incline to work the quads, or lower the incline and increase the resistance to firm up the butt.
The Cybex 425A is also far easier on the body than most exercise equipment. The trainer's Reverse Arc motion technology places the user's toe behind the knee, reducing stress on the joints while offering a complete range of motion for both the knee and hip. The machine's Same Side Forward (SSF) orientation, meanwhile, ensures that the arm and leg on the same side move together, so that the relationship with the arm handle and footplate remains the same regardless of incline. This allows the user to always maintain an optimal posture during the exercise, which virtually eliminates back fatigue. Other cross trainers, by contrast, move the arms and legs in opposite directions, putting the body in a stressful position throughout the incline range. Finally, the Arc Trainer is equipped with long input arms that produce a more linear path, versus the shorter handles found on most equipment. This near-linear path minimizes painful wrist articulation, allowing you to get a better upper body workout and maintain good posture.
The 425A is technically a light commercial machine, meaning it excels in hotels, corporate environments, and residential housing complexes. However, it's also suitable for home use as well, with a compact footprint and a versatile, load-dependent design..