Body surface area is a predictor of maturity status in school children and adolescents

Fernando Alvear-Vasquez, Rubén Vidal-Espinoza, Rossana Gomez-Campos, Luis Felipe Castelli Correia de Campos, Evandro Lazari, Jose Francisco Guzmán-Luján, Ana Pablos-Monzó, Marco Cossio-Bolaños

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1 Scopus citations


Background: Generally, Body surface area (BSA) changes significantly during growth and maturation. These increases portend a possible relationship between body size as determined by BSA with maturational status in children and adolescents. Objective: To determine the relationship between maturity status (MS) obtained by non-invasive anthropometric methods and body surface area (BSA) in children and adolescents of both sexes in a regional population of Chile. Additionally, we sought to verify the type of linear or nonlinear relationship between MS and BSA in both sexes. Methods: A descriptive (cross-sectional) study was designed in 950 children and adolescents of both sexes (539 males and 411 females). The age range ranged from 6.0 to 17.9 years. Anthropometric measurements were evaluated: body weight, standing height, sitting height. MS was assessed by means of two non-invasive anthropometric techniques. Both techniques predict peak years of growth velocity (APHV) through a regression equation for each sex. BSA (m2) was estimated by means of the Haycock equation. Results: The R2 in the linear model is relatively lower (R2 = 0.80 to 0.89 in males and 0.74 to 0.66 in females) in relation to the nonlinear quadratic model (R2 = 0.81 in males and 0.76 to 0.69). The quadratic nonlinear quadratic model reflected an adequate fit (RMSE) for the data set, being in men (RMSE = 1.080 and 1.125), while in women (RMSE = 1.779 and 1.479). Conclusion: BSA is positively associated with MS determined by two non-invasive methods in Chilean children and adolescents: The nonlinear quadratic model was a better fit to the data distribution. The results suggest the use of BSA as a possible predictor of maturity status in Chilean youth.

Original languageEnglish
Article number410
Pages (from-to)410
JournalBMC Pediatrics
Issue number1
StatePublished - 19 Aug 2023


  • Adolescents
  • Body surface area
  • Children
  • Maturity status
  • Sexual Behavior
  • Cross-Sectional Studies
  • Humans
  • Anthropometry
  • Male
  • Adolescent
  • Female
  • Body Height
  • Body Surface Area
  • Child


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