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High-intensity, Short Workouts Will Rule In 2014 -- But Worry Fitness Pros

He says this year, as HIIT workouts have soared in popularity, he's seen more orthopedic injuries (visit) - mostly joints, knees, hips and ankles -- and cardiovascular complications, like heart attacks or strokes. But high-intensity doesn't necessarily have to mean high-impact -- jumping exercises like plyometrics, or sprinting on the treadmill, are not appropriate for everyone, especially older folks or people prone to joint problems or heart issues, fitness experts caution. The interesting thing to me is that its name, the emphasis, that puts people off its not called low-intensity training. But it could be, says Michael Mantell, a behavioral scientist with ACE. Because the recovery or rest period is just as important as the period of Max Workouts intensity, he explains. It helps your heart become stronger, "because you have a rapid heart rate and then dropping it creates ventricular remodeling it helps your heart with faster cardiac output," Mantell says. He says that if you're interested in trying interval training, but you haven't been regularly exercising, keep it slow to start. You can even do this on a walk around your neighborhood: Speed-walk for half a block, and then walk slowly again for a block. Keep going for 20 minutes -- you just did high-intensity intervals!
Full story: http://www.today.com/health/high-intensity-short-workouts-will-rule-2014-fitness-pros-predict-2D11585038

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