What does 3000 kcal per hour mean?

Answer 1

References for Calorie (kcal) Values The values shown below for the approximate Calorie (kcal) expenditure of walking are based on the MET values provided by Ainsworth in The Compendium of Physical Activities Tracking Guide. Calculations that include ascending and descending flights of stairs also utilize the approximate kcal values provided by Taylor in Guthrie and Picciano. Calculations for "Additional Calories Burned" and "Weight Control Benefit" are informed by Guthrie and Picciano. http://www.wv-hsta.org/cdc_chc/walking_kcal_expenditure.htm