10-03-12, 12:09 AM | |
Join Date: May 2010
Location: Melbourne, Australia
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The "1000 calories an hour" claims are definitely advertising. I have a polar HRM too and I don't get anywhere near that amount. Calorie burn is a function of your weight and your heart rate but there are many different formulas out there and all are approximations.
The calculator http://www.exrx.net/Calculators/Calories.html gives me numbers that are close to what I get from my HRM. I'm 47, 5'5" (165cm) and weigh 150 lbs (68kg). My calorie burns are roughly
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10-03-12, 11:10 AM | |
Join Date: Sep 2010
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Even though rationally I know that all burn numbers are just estimates, and it is different for different people (especially different sized, age, and gendered people) I still sometimes feel a little discouraged by this. My calorie burns according to my heart rate monitor are pretty low compared to a lot that I see other people post on the different diet/exercise tracking forums/apps I've used over the past few years. If I am lucky I can burn almost 500 calories in a very vigorous one hour, but usually for an hour it is more like 200-300 calories. Though calorie burn should, in my opinion, be seen as an extra perk of exercise not the main reason. Fixating on it too much can result in choosing too much high impact, vigorous cardio and avoiding other beneficial activities.
But an interesting example, in the ACE kettle bell study, their participants ranged in calorie burn from 8.75 to 17.85 calories a minute! And the participants average heart rate for the workout ranged from 128 bpm to 180 bpm. (http://www.acefitness.org/getfit/research.aspx) This variation came from a fairly small sample, copied from the report: "10 volunteers, male and female, ages 29 to 46 years, all of whom were experienced in kettlebell training." So with this data, someone could create a one hour kettlebell circuit workout and say it burns more than 1000 calories an hour *standard disclaimer, results may vary by the individual..." Even though of the 10 testers, the lowest burn would be more like 525 for an hour, and probably lower still with a larger population. (And they didn't do these exercises for an hour anyway). |
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calories burned |
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