Bowflex Revolution XP Owners Manual - Page 7

5 Using Your Bowflex Revolution® XP Home Gym SpiraFlex® Resistance The Bowflex Revolution® XP home gym features an ingenious patented technology called SpiraFlex®. The Bowflex Revolution® XP muscle-building resistance comes in the form of these cleverly designed resistance packs, each constructed with a heavy-duty elastic strap inside the pack. When you perform an exercise, these resistance packs rotate around the center, stretching the elastic strap and creating resistance. A significant advantage of the resistance packs is that the resistance is present throughout the ENTIRE range of motion. That gives you a more consistent, gym-quality experience - which means your muscles get a bigger burn, a better workout and faster results. SpiraFlex® technology is a non-inertial resistance mechanism that provides the smoothness and feel of gym-quality pack-loaded machines, but eliminates the excessive bulk and weight. This totally unique, stateof-the-art resistance system involves wrapping an elastic strap tighter and tighter around a coil, which is contained in a small canister that looks very similar to free weight packs, but weighs only a few pounds. Because no metal parts are used, SpiraFlex® technology is quiet, lightweight, portable, and safe. Adjusting And Understanding The Resistance The Bowflex Revolution® XP home gym comes with 200 lbs. (90.72 kg) of ­resistance. The SpiraFlex® resistance packs look very much like free weight plates and are assigned a pound rating based on their resistance - including 5, 10, 20, and 40-pound packs (2.27kg, 4.54kg, 9.07kg, 18.14kg). The real power of the workout is in the RESISTANCE, not the weight. And that means you can quickly and easily stack these lightweight resistance packs on to the Revolution® XP - just like free weights - and get a great workout. To upgrade to 280 pounds (127 kg) of resistance please call 1-800-NAUTILUS (628-8458)