PUBLISHED 08/21/2007
The fast pace builds speed, but it's the hill that provides the strength benefit. Running up an incline places the same demand on your muscles as weight training--your glutes, quads, hamstrings, and calves must "lift" you up the slope--but they're more specific to running. And just as with plyometrics (jump drills), the "explosive" action of uphill sprints improves elasticity in your muscles and tendons, which allows you to spring quickly into action after landing.
Hills Year-Round
To develop leg strength throughout the year, Hudson's runners do short sprints on a hill that is between a six to 10 percent grade. They tack these surges onto the end of two easy runs a week. At the start of the season, they'll log just two 10-second repeats. The next week they'll do three. Once they reach eight, they cut back to doing them once a week. The first repeat is done at a fast pace, the rest at top speed. Each repeat is followed by at least two minutes of recovery, which includes walking downhill backward to keep pressure off the knees. "They're not easy to do," says Hudson. "But the pain's gone in a second or two." And you're left with stronger, faster legs.
