Scaling of adult regional body mass and body composition as a whole to height

Relevance to body shape and body mass index

John M. Schuna, Courtney M. Peterson, Diana M. Thomas, Moonseong Heo, Sangmo Hong, Woong Choi, Steven B. Heymsfield

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Objectives: Adult body mass (MB) empirically scales as height (Ht) squared (MB ∝ Ht<sup>2</sup>), but does regional body mass and body composition as a whole also scale as Ht<sup>2</sup>? This question is relevant to a wide range of biological topics, including interpretation of body mass index (BMI). Methods: Dual-energy X-ray absorptiometry (DXA) was used to quantify regional body mass [head (MH), trunk, arms, and legs] and whole-body composition [fat, lean soft tissue (LST), and bone mineral content (BMC)] in non-Hispanic (NH) white, NH black, Mexican American, and Korean adults participating in the National Health and Nutrition Examination Survey (NHANES; n = 17,126) and Korean NHANES (n = 8,942). Regression models were developed to establish Ht scaling powers for each measured component with adjustments for age and adiposity. Results: Exploratory analyses revealed a consistent scaling pattern across men and women of the four population groups: regional mass powers, head (∼0.8-1) < arms and trunk (∼1.8-2.3) < legs (∼2.3-2.6); and body composition, LST (∼2.0-2.3) < BMC (∼2.1-2.4). Small sex and population differences in scaling powers were also observed. As body mass scaled uniformly across the eight sex and population groups as Ht<sup>∼2</sup>, tall and short subjects differed in body shape (e.g., MH/MB ∝ Ht<sup>-∼1</sup>) and composition. Conclusions: Adult human body shape and relative composition are a function of body size as represented by stature, a finding that reveals a previously unrecognized phenotypic heterogeneity as defined by BMI. These observations provide new pathways for exploring mechanisms governing the interrelations between adult stature, body morphology, biomechanics, and metabolism. Am. J. Hum. Biol., 27:372-379, 2015.

Original languageEnglish (US)
Pages (from-to)372-379
Number of pages8
JournalAmerican Journal of Human Biology
Volume27
Issue number3
DOIs
StatePublished - May 1 2015

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body shape
Nutrition Surveys
anthropometric measurements
Body Composition
scaling
body mass
body composition
body mass index
Body Mass Index
Head
National Health and Nutrition Examination Survey
Photon Absorptiometry
Adiposity
Body Size
Human Body
Population Groups
Biomechanical Phenomena
Bone Density
Leg
biomechanics

ASJC Scopus subject areas

  • Anthropology
  • Anatomy
  • Genetics
  • Ecology, Evolution, Behavior and Systematics

Cite this

Scaling of adult regional body mass and body composition as a whole to height : Relevance to body shape and body mass index. / Schuna, John M.; Peterson, Courtney M.; Thomas, Diana M.; Heo, Moonseong; Hong, Sangmo; Choi, Woong; Heymsfield, Steven B.

In: American Journal of Human Biology, Vol. 27, No. 3, 01.05.2015, p. 372-379.

Research output: Contribution to journalArticle

Schuna, John M. ; Peterson, Courtney M. ; Thomas, Diana M. ; Heo, Moonseong ; Hong, Sangmo ; Choi, Woong ; Heymsfield, Steven B. / Scaling of adult regional body mass and body composition as a whole to height : Relevance to body shape and body mass index. In: American Journal of Human Biology. 2015 ; Vol. 27, No. 3. pp. 372-379.
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