How are the BowFlex Power Rod® home gyms and the BowFlex Revolution® home gyms different?

The BowFlex® home gyms offer resistance from the start to finish of each exercise. BowFlex® Power Rods® feel very much like free weights or dumbbells. Power Rod® resistance is progressive, meaning that the more you flex the rods, the more weight you are displacing. On BowFlex Revolution® home gyms resistance is linear and gives the feel of plate-loaded machines, but eliminates the bulk and weight. The BowFlex Revolution® unit also has more adjustability of starting locations and incorporates about 10 inches (24.5 cm) of additional cable travel. Both technologies use resistance strength training which is what makes BowFlex® home gyms so effective.