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- Title
The influence of physical characteristics on the resting energy expenditure of youth: A meta-analysis.
- Authors
Herrmann, Stephen D.; McMurray, Robert G.; Kim, Youngdeok; Willis, Erik A.; Kang, Minsoo; McCurdy, Thomas
- Abstract
Objective To examine the literature on resting energy expenditure (REE) of youth and determine the influence of age, sex, BMI, and body composition on REE. Methods A literature search was conducted using PubMed, BIOSIS Previews, NTIS, EMBASE, MEDLINE, and Pascal databases for studies with data on resting metabolic rate, REE, resting oxygen uptake (or VO2) in healthy children, youth, or adolescents (age = 1-18 years). Over 200 publications were identified; sixty-one publications met criteria and were included in the meta-analyses, resulting in 142 study population estimates (totaling 5,397 youth) of REE. Results Pooled mean was 1414 kcal·day−1 with a significant and moderate-to-high between-study heterogeneity [ Q(140) = 7912.42, P < 0.001; I2 = 98.97%]. A significantly greater ( P < 0.001) pooled mean kcal·day−1 was estimated for studies with male participants (1519 kcal·day−1) comparing to studies with female participants (1338 kcal·day−1). Age, height, and body mass resulted in the highest R2 of 86.4 for males and 83.9% for females. Fat free mass and body mass index (BMI) did not improve total R2. Conclusions These data suggest that using a linear equation including age, height, and body mass to estimate REE based on kcal·day−1 is more accurate than estimates based on body mass kcal·kg−1·h−1. Further, if kcal·kg−1·h−1 is used, including a quadratic component for the physical characteristics improves the predictive ability of the equation. Regardless of the metric, separate equations should be used for each sex.
- Subjects
CALORIC expenditure; BASAL metabolism; YOUTH physiology; YOUNG adults; HETEROGENEITY; PHYSIOLOGY
- Publication
American Journal of Human Biology, 2017, Vol 29, Issue 3, pn/a
- ISSN
1042-0533
- Publication type
Article
- DOI
10.1002/ajhb.22944