Energy cost expression for a youth compendium of physical activities: Rationale for using age groups

Karin A. Pfeiffer, Kathleen B. Watson, Robert G. McMurray, David R. Bassett, Nancy F. Butte, Scott E. Crouter, Stephen D. Herrmann, Stewart G. Trost, Barbara Ainsworth, Janet E. Fulton, David Berrigan

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

Purpose: This study compared the accuracy of physical activity energy expenditure (PAEE) prediction using 2 methods of accounting for age dependency versus 1 standard (single) value across all ages. Methods: PAEE estimates were derived by pooling data from 5 studies. Participants, 6-18 years (n = 929), engaged in 14 activities while in a room calorimeter or wearing a portable metabolic analyzer. Linear regression was used to estimate the measurement error in PAEE (expressed as youth metabolic equivalent) associated with using age groups (6-9, 10-12, 13-15, and 16-18 y) and age-in-years [each year of chronological age (eg, 12 = 12.0-12.99 y)] versus the standard (a single value across all ages). Results: Age groups and age-in-years showed similar error, and both showed less error than the standard method for cycling, skilled, and moderate-to vigorous-intensity activities. For sedentary and light activities, the standard had similar error to the other 2 methods.Mean values for root mean square error ranged from 0.2 to 1.7 youth metabolic equivalent across all activities. Error reduction ranged from -0.2% to 21.7% for age groups and -0.23% to 18.2% for age-in-years compared with the standard. Conclusions: Accounting for age showed lower errors than a standard (single) value; using an age-dependent model in the Youth Compendium is recommended.

Original languageEnglish (US)
Pages (from-to)144-151
Number of pages8
JournalPediatric Exercise Science
Volume30
Issue number1
DOIs
StatePublished - Feb 2018

Keywords

  • Adolescents
  • Children
  • Energy expenditure
  • MET

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Fingerprint Dive into the research topics of 'Energy cost expression for a youth compendium of physical activities: Rationale for using age groups'. Together they form a unique fingerprint.

  • Cite this

    Pfeiffer, K. A., Watson, K. B., McMurray, R. G., Bassett, D. R., Butte, N. F., Crouter, S. E., Herrmann, S. D., Trost, S. G., Ainsworth, B., Fulton, J. E., & Berrigan, D. (2018). Energy cost expression for a youth compendium of physical activities: Rationale for using age groups. Pediatric Exercise Science, 30(1), 144-151. https://doi.org/10.1123/pes.2016-0249