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Old 10-16-2012, 03:08 AM   #7
floridatennisdude
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Join Date: Feb 2012
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I wore a heart rate monitor for a 90 minute hitting practice and burned over 1500 calories. Very few breaks and constant rallying.

Same monitor in the gym for a 60 min weight workout and 20 mins of intervals burned 1200.

Tough for a chart to predict the effort that goes into someone's workout. I'd say get a monitor if you really want to know. Polaris makes good ones that sync up with treadmills.
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