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400M Repeat

Posted by GymAmerica
Tuesday, April 3, 2012 at 5:39pm filed under Cardio - Running

Calories Burned:  1,089 calories per hour   (based on a body weight of 150 lbs.)
Speed Training Interval Run

When you are doing a 400M Repeat, you should attempt to run at about your 5K race pace. If you do not know your 5K race pace, you should run at a pace that is slightly faster than your normal running pace (RPE of 7 or 8).

 RPE stands for Rate of Perceived Exertion and is based on a 10-point scale
10 = extreme exertion -- conversation is impossible
8 = high effort -- conversation is extremely labored
6 = optimum effort -- conversation is difficult, but possible
4 = medium effort -- conversation is easy to maintain2 = warm up

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