The SuperSlow program began when its developer, Ken Hutchins of Orlando, Fla., led a program investigating the effects of resistance training on older women with osteoporosis. "These women were so weak we were afraid for their safety," Hutchins recalls.
Even before then, Hutchins had toyed with the idea of slow exercise before, only to lose interest. But low weight combined with slow movements seemed like the perfect program for these women: Following it, the women made dramatic gains in strength.
Among Bill Clinton's post-White House ventures, one of the more striking is his campaign to reverse trends in childhood obesity. It's been remarkable for its ambition, and for the scope of its potential benefits. But perhaps most of all, it's been remarkable to see someone of Clinton's typically diet-oblivious gender speak publicly about laying off the cheeseburgers.
Wayne L. Westcott, PhD, fitness research director at the South Shore YMCA in Quincy, Mass., heard of the program and staged two informal studies in 1993 and 1999. In each, about 75 people trained with the SuperSlow program -- for 8 and 10 weeks, respectively. Those doing SuperSlow in both groups experienced a greater than 50% gain in strength. In fact, the results were so difficult to believe that Westcott had them verified at Virginia Tech.
According to Hutchins, the key to SuperSlow is to never let the muscle rest -- to remove the element of momentum from each exercise, making the muscles do the work instead of capitalizing on the tendency of a weight in motion to stay in motion. Muscles are worked beyond the shaky phase to the point of failure, when the person is physically unable to perform one more repetition.
The people in Westcott's study did 12-13 exercises. The comparison group did 10 repetitions of each exercise, pulling the weight up and lowering it over a period of the usual 2 seconds in each direction. The other half did five repetitions, but lifted slowly, 10 seconds on the upstroke and 4 seconds on the way back down. (Hutchins and others recommend 10 seconds each way.) That's 20 seconds of muscle contraction for each repetition instead of 4 seconds. Multiply that by five repetitions and 12 exercises, and you have a killer workout, Westcott says. Despite the fact that the technique started with elderly ladies, it is intensive and tough, Westcott says. (It also requires machinery in good working condition to minimize friction, which "unloads" the muscle.)