title: Energy cost of common activities in children and adolescents.
abstract: BACKGROUND
  The Compendium of Energy Expenditures for Youth assigns MET values to a wide range of activities. However, only 35% of activity MET values were derived from energy cost data measured in youth; the remaining activities were estimated from adult values.
  
  
  OBJECTIVE
  To determine the energy cost of common activities performed by children and adolescents and compare these data to similar activities reported in the compendium.
  
  
  METHODS
  Thirty-two children (8-11 years old) and 28 adolescents (12-16 years) completed 4 locomotion activities on a treadmill (TRD) and 5 age-specific activities of daily living (ADL). Oxygen consumption was measured using a portable metabolic analyzer.
  
  
  RESULTS
  In children, measured METs were significantly lower than compendium METs for 3 activities [basketball, bike riding, and Wii tennis (1.1-3.5 METs lower)]. In adolescents, measured METs were significantly lower than compendium METs for 4 ADLs [basketball, bike riding, board games, and Wii tennis (0.3-2.5 METs lower)] and 3 TRDs [2.24 m · s(-1), 1.56 m · s(-1), and 1.34 m · s(-1) (0.4-0.8 METs lower)].
  
  
  CONCLUSIONS
  The Compendium of Energy Expenditures for Youth is an invaluable resource to applied researchers. Inclusion of empirically derived data would improve the validity of the Compendium of Energy Expenditures for Youth.
authors.affiliation: Department of Kinesiology, University of Massachusetts-Amherst, MA, USA.
authors.forename: Kate
authors.initials: K
authors.lastname: Lyden
authors.forename: Sarah Kozey
authors.initials: SK
authors.lastname: Keadle
authors.forename: John
authors.initials: J
authors.lastname: Staudenmayer
authors.forename: Patty
authors.initials: P
authors.lastname: Freedson
authors.forename: Sofiya
authors.initials: S
authors.lastname: Alhassan
mesh_terms: D061725:Accelerometry; D000203:Activities of Daily Living; D000293:Adolescent; D001837:Body Weights and Measures; D002153:Calorimetry, Indirect; D002648:Child; D004734:Energy Metabolism; D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008124:Locomotion / Q000502:physiology*; D008297:Male; D010101:Oxygen Consumption / Q000502:physiology; D013177:Sports / Q000502:physiology; D016138:Walking / Q000502:physiology