Energy cost expression for a Youth Compendium of Physical Activities: Rationale for using age groups
Open accessAbstract
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.
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Resting metabolic rate changes across the lifespan, dramatically throughout adolescence.
“Since RMR changes across the lifespan (dramatically throughout adolescence16,17)”
From 2024 Adult Compendium of Physical Activities: A third update of the energy costs of human activities (2024) · cites this paper as [17]
The Introduction says resting energy expenditure per unit of body mass declines with age in children and is higher in children than adults. The Discussion gives a substantial basal metabolic rate difference between an 8-year-old and a 16-year-old. These passages support an age-related change, but they do not establish changes across the entire lifespan or specifically throughout adolescence. (LLM, conf=0.84)
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References 17 · Cited by 14
- Authors
- 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. E., Fulton, J. E., Berrigan, D., & _, _.
- Affiliations
- Michigan State University (US)
- Centers for Disease Control and Prevention (US)
- University of North Carolina at Chapel Hill (US)
- University of Tennessee at Knoxville (US)
- Baylor College of Medicine (US)
- Sanford Research (US)
- Queensland University of Technology (AU)
- Arizona State University (US)
- National Cancer Institute (UA)
- Corresponding author
- Pfeiffer, Karin A.
- ORCID
- Venue
- Pediatric Exercise Science
- Publisher
- Human Kinetics
- Published
- 2018-02-01
- Volume
- 30
- Issue
- 1
- Pages
- 142-149
- ISSN
- 0899-8493 (ISSN-L)
- 1543-2920
- PMC
- PMC9643012
- OpenAlex
- W2743153611
- Cited by
- 14
- References
- 17
- Citations by year
- 2024: 5 · 2022: 2 · 2021: 1 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 1
- FWCI
- 1.21
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Pediatric Exercise Science (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- QUT ePrints (Queensland University of Technology) (submittedVersion, cc-by-nc-nd)
- Funders
- National Institutes of Health (CC999999)
- Centers for Disease Control and Prevention (FHI 360)
- Topics
- Health Sciences › Medicine › Physiology › Physical Activity and Health
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
- Health Sciences › Medicine › Complementary and alternative medicine › Cardiovascular and exercise physiology
- Keywords
- physical activity energy expenditure, age dependence, age groups, measurement error, children and adolescents, cycling
- MeSH terms
- Adolescent, Child, Child, Preschool, Cross-Sectional Studies, Energy Metabolism, Female, Humans, Male, Reference Values, Exercise, Metabolic Equivalent
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