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  #1   ^
Old Thu, Sep-16-10, 06:06
::steve:: ::steve:: is offline
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Posts: 28
 
Plan: atkins
Stats: 145/137/130 Male 171
BF:
Progress: 53%
Default why the total calories calculated manually aren't the same calories in table ?

why the total calories calculated manually aren't the same calories in table ?

the table total calories : 125 calories





manually : 108.2 calories

calories from protein = 17.8 * 4 = 71.2 calories
calories from fat = 1.4 * 9 = 12.6 calories
calories from net carb "PECC"= 6.1 * 4 = 24.4 calories
total calories = 71.2 + 12.6 + 24.4 = 108.2 calories

why not as in the table !
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  #2   ^
Old Fri, Sep-17-10, 04:51
tamarian's Avatar
tamarian tamarian is offline
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Posts: 19,570
 
Plan: Atkins/PP/BFL
Stats: 400/223/200 Male 5 ft 11
BF:37%/17%/12%
Progress: 89%
Location: Ottawa, ON
Default

You are assuming that carbs and protein have 4 calories and fat has 9 calories, but those are rounded figures. The database has different values based on analysis of each food item done by the USDA.

Check the "Energy Factors" in the Nutritional details of an item, like this one for example: http://forum.lowcarber.org/myplan.p...s&item_id=20015

Wa'il
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