Sensitivity of Energy Balance

This energy balance equation can be unbalanced by changing energy intake, energy expenditure, or both, as shown in the following examples. (1 pound (lbs.) of fat equals 3,500 kcal.)

Example 1:

E at i ng 1 extra chocolate chip cookie kcal) each day for 1 year

E at i ng 1 extra chocolate chip cookie kcal) each day for 1 year

would be: 65 kcal x 365=23,725 kcal. This would add up at the end of the year to a total net weight gain . of 6.8 lbs. (23,725 - 3,500).

Example 2:

If you maintain your kcal intake and run an extra mile per day, 5 days per week, you would expend an extra 100 kcal/mile x 5 miles/week x 52 weeks = 26,000 kcals per year. This would result in a net weight loss of 7.4 lbs. per year (26,000 -f 3,500).

would be: 65 kcal x 365=23,725 kcal. This would add up at the end of the year to a total net weight gain . of 6.8 lbs. (23,725 - 3,500).

You see? The energy balance equation is very sensitive!

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