Background:

Thirty-five percent of the activities assigned MET values in the Compendium of Energy Expenditures for Youth were obtained from direct measurement of energy expenditure (EE). The aim of this study was to provide directly measured EE for several different activities in youth.

Methods:

Resting metabolic rate (RMR) of 178 youths (80 females, 98 males) was first measured. Participants then performed structured activity bouts while wearing a portable metabolic system to directly measure EE. Steady-state oxygen consumption data were used to compute activity METstandard (activity VO2/3.5) and METmeasured (activity VO2/measured RMR) for the different activities.

Results:

Rates of EE were measured for 70 different activities and ranged from 1.9 to 12.0 METstandard and 1.5 to 10.0 METmeasured.

Conclusion:

This study provides directly measured energy cost values for 70 activities in children and adolescents. It contributes empirical data to support the expansion of the Compendium of Energy Expenditures for Youth.

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Sasaki (jeffersasaki@gmail.com) is with the Graduate Program in Physical Education, Federal University of Triangulo Mineiro, Brazil. Howe is with the School of Applied Health and Wellness, Ohio University. John is with the Dept of Health Sciences, Northeastern University. Hickey, Burkart, Alhassan, and Freedson are with the Dept of Kinesiology, University of Massachusetts Amherst. Steeves is with the Division of Education, Maryville College. Conger is with the Dept of Kinesiology, Boise State University. Lyden is with Misfit Wearables, San Francisco, CA. Kozey-Keadle is with the Nutritional Epidemiology Branch, National Cancer Institute. Bassett Jr. is with the Dept of Kinesiology, Recreation, and Sport Studies, The University of Tennessee.