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Your Energy Needs

Author(s): Nancy Moreno, PhD, and Paula Cutler, BS.

Basal Metabolic Rate (BMR) Changes with Age

As an optional activity, have students calculate Basal Metabolic Rate (BMR) for a person of the same height and weight, but using different ages in the Harris-Benedict equations. The graph above was created using a female with height of 64 inches and weight of 127 lbs. The BMR was calculated at ten-year intervals, beginning at age 15 years.

Harris-Benedict Equations

For men: BMR = 66.5 + (13.75 x Weight) + (5.003 x Height) - (6.775 x Age)

For women: BMR = 655.1 + (9.5663 x Weight) + (1.85 x Height) - (4.676 x Age)


Funded by the following grant(s)

National Space Biomedical Research Institute

National Space Biomedical Research Institute

This work was supported by National Space Biomedical Research Institute through NASA cooperative agreement NCC 9-58.