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Old 11-25-2012, 02:42 PM   #2 (permalink)
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I believe it's the distance covered that is important. Whether you walk it or run it is less important. But this is a point that is debated a lot. When I read an article that says running is 'more intense,' I interpret that to mean that you pack more travel (more distance) into a shorter time. Running is more aerobic (increases the need for oxygen) but an out of shape person who walks will breathe pretty hard while getting back in shape. Running is more high-impact than walking, meaning you hit the ground pretty hard with those feet! This puts a lot of stress on joints, particularly when you are out of shape. There's a reason exercise physiologists and kinesiologists study running - runners want to be safe and fast.
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