Energy Balance

Energy balance is the difference between the number of kilocalories (kcals or Calories) you eat (intake) and the number of kcals you burn (output).

Figure 1-1. Energy Balance: Intake vs. Output

Intake = Output, i.e., energy balance.

Intake = 3000 kcal Output = 3000 kcal Weight Maintained

Intake = 3000 kcal Output = 3000 kcal Weight Maintained

Intake > Output, i.e., positive energy balance.

Intake = 4000 kcal Output = 2000 kcal Weight Gain

Intake = 4000 kcal Output = 2000 kcal Weight Gain

Intake > Output, i.e., positive energy balance.

Intake < Output, i.e., negative energy balance.

Intake = 2000 kcal Output = 3000 kcal Weight Loss

Figure taken from FI Katch and WD McArdle. Nutrition,Weight Control, and Exercise, 3rd Ed. Philadelphia: Lea & Febiger, 1988.

Weight Loss New Years Resolution Success

Weight Loss New Years Resolution Success

Sure you haven’t tried this program before but you no doubt aren’t a stranger to the dieting merry go-round that has been plaguing your life up to this point.

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