How are calories from playing ball sports calculated?
To find the number of calories burned:
- Find the MET value of the task.
- Calculate the number of calories burned per minute. (MET x body weight in kg x 3.5) ÷ 200.
- Multiply the calories burned per minute by the number of minutes of activity.
A person weighs 160 pounds and plays broomball (MET value of 7.0) for 1 hour.
160 pounds = 72.73kg.
1 hour = 60 minutes.
Calories burned playing broomball (per minute) = (7.0 x 72.73 x 3.5) ÷ 200 = 1782 ÷ 200 = 8.91
Calories burned playing broomball (for 60 minutes) = 8.91 x 60 = 535
What is MET (Metabolic Equivalent of Task)?
MET is a measurement of the energy cost of a physical activity for a period of time.
A MET 1 task is roughly equal to a person’s energy expenditure from sitting still in room temperature and not actively digesting food.
A MET 2 task uses twice as much energy per minute as an activity with a MET of 1.
An activity with a MET of 10 uses 10 times as much energy per minute as an activity with a MET of 1.
The MET approach was designed to build a classification system of different activities for research purposes. Every person’s energy expenditure will be different.
MET values “do not estimate the energy cost of physical activity in individuals in ways that account for differences in body mass, adiposity, age, sex, efficiency of movement, geographic and environmental conditions in which the activities are performed. Thus, individual differences in energy expenditure for the same activity can be large and the true energy cost for an individual may or may not be close to the stated mean MET level as presented in the Compendium.” (as quoted from the main page of the Compendium of Physical Activities).
Sources and more resources
- Ainsworth BE, Haskell WL, Herrmann SD, Meckes N, Bassett Jr DR, Tudor-Locke C, Greer JL, Vezina J, Whitt-Glover MC, Leon AS. The Compendium of Physical Activities Tracking Guide. Healthy Lifestyles Research Center, College of Nursing & Health Innovation, Arizona State University. Retrieved May 11, 2015, from the World Wide Web.
- Arizona State University Healthy Lifestyles Research Center – Compendium of Physical Activities – Walking
- Wikipedia – Metabolic Equivalent