The explanation: Trained runners use a lower percentage of aerobic capacity than the untrained runners and thus need fewer calories to support oxygen uptake. Brian Mac, a British track and field coach, points to research revealing that highly conditioned athletes burn fewer calories than equally-sized but less fit runners during the same exact workout. Also, your fitness level can affect your calorie-burning ability. Environmental factors like hot or cold weather, hilly terrain and gusty winds may increase or decrease the number of calories burned. Note that several other factors can affect the how many calories burned while running. To calculate this formula, multiply your weight by 0.63 to determine the net calories burned for each mile run. To figure out how many calories are burned in a 10k, you would take the result of calories burned per mile and multiply it by 6.2 miles, the English measurement equivalent to a 10K.Īnother formula to calculate calories burned while running subtracts the basal metabolic calorie-burn from the previous formula to create a "net calorie burn." This gives you the actual calories burned as a direct result of running instead of the "gross calorie burn" based on the combination of running and just living (breathing, digesting, maintaining core temperature, etc). This formula is premised on running 5 mph (a 12-minute mile) running faster will up the total amount of calories burned. The formula states that a person's weight multiplied by 0.73 equals the amount of calories burned in a mile. The University of Indiana offers a simple formula based on body weight for calculating how many calories are burned based for each mile run. A 155-pound person running for 30 minutes burns 298 calories at 5 mph, but burns 614 calories at 10 mph. Runners also burn more calories as they go faster. For example, based on data from Harvard Medical School, a 125-pound person running for 30 minutes at 5 mph burns 240 calories, while a 185-pound person burns 355. Smaller people don’t have the same body mass, and won't burn an equal amount of calories as a larger person. A general calculation tossed about by old-school runners is that 1 mile of running consumes 100 calories of energy, but this is like comparing a Chihuahua to a Great Dane. Body mass (size) and workout intensity (speed) directly affect the number of calories a person uses during a run.
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