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Research shows combining dumbbells and resistance bands can increase lower-body strength three times as fast (and upper-body strength twice as quickly) as dumbbells alone. That's because the bands' elasticity challenges the muscles throughout a greater range of motion, says Gary Sforzo, PhD, a professor of exercise and sport sciences at Ithaca College. Try these moves from Keli Roberts, group fitness manager at Equinox Fitness Club in Pasadena, California, twice a week for three weeks for quick sculpting results.
Originally published in Fitness magazine, March 2006.