People have wondered for a long time how exercise and other activities affect the number of calories needed. A 1919 home economics textbook contained this table with U.S. Department of Agriculture data on the “average calorific requirements of the body under different conditions.” The book contained examples of how the table could be used to calculate the number of calories needed by an individual:
A woman of about 130 pounds, sleeping for 8 hours, doing light housework 10 hours, reading, etc. 6 hours, would require (8 X 56) + (10 X 148) + (6 X 87) = 2,450 calories. A boy of about the same weight with 8 hours sleep, 8 hours active exercise, 6 hours playing tennis (severe exercise) and 2 hours quiet would require (8 X 56) + (8 X 165) + (6 X 390) + (2 X 87) = 4,282 calories.
Household Engineering: Scientific Management in the Home by Christine Frederick (1919)
hmm. . . I wonder if the information in the 1919 table is still considered correct.