title: Physique and echocardiographic dimensions in children, adolescents and young adults.
abstract: Relationships between echocardiographic dimensions and the Heath-Carter anthropometric somatotype were considered in healthy, non-obese children (8-11 year olds, n = 143), adolescents (12 15 year olds, n = 216) and young adults (16-24 years, n = 190). Cardiac dimensions, measured by M-mode echocardiography at end-diastole, included left ventricular internal diameter (LVIDd), posterior wall thickness (PWTd), and interventricular posterior wall thickness (STd). Left ventricular mass (LVM) and left ventricular end-diastolic volume (LVEDV) were estimated. Partial correlations between cardiac dimensions and each somatotype component were calculated, controlling for age and the other two components. Only 9 out of 45 correlations in males and 7 of 45 correlations in females were significant (p < or = 0.05). LVM, LVEDV, and LVIDd were significantly related to somatotype in males, demonstrating significant positive correlations with mesomorphy (r = 0.25, 0.29 and 0.29, respectively) and ectomorphy (r = 0.22. 0.37, and 0.37, respectively), and LVEDV and LVIDd were related to endomorphy (r = 0.24 and 0.25, respectively) in 8-11 year old boys. In 8-11 year old females, endomorphy was related to STd (r = 0.41) and LVM (r = 0.34), while mesomorphy was related to PWTd (r = -0.34) and ectomorphy was related to PWTd (r = -0.36). In 12-15 year old females, mesomorphy was related to STd (r = 0.26) and in 16-24 year old females, endomorphy was related to LVIDd (r = 0.29) and LVEDV (r = 0.32). Overall, the correlations between somatotype and cardiac dimensions were low, ranging from -0.36 to +0.41, with no clear pattern in either sex. Additionally, a backward stepwise regression analysis indicated that body size was more important in predicting echocardiographic dimensions than somatotype. Thus, physique, as estimated with the Heath-Carter anthropometric somatotype, is not related to echocardiographic dimensions in children, youths and young adults.
authors.affiliation: Michigan State University, East Lansing 48824, USA.
authors.forename: P T
authors.initials: PT
authors.lastname: Katzmarzyk
authors.forename: R M
authors.initials: RM
authors.lastname: Malina
authors.forename: T M
authors.initials: TM
authors.lastname: Song
authors.forename: G
authors.initials: G
authors.lastname: Thériault
authors.forename: C
authors.initials: C
authors.lastname: Bouchard
mesh_terms: D000293:Adolescent; D000328:Adult; D001824:Body Constitution; D001835:Body Weight; D002648:Child; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000033:anatomy & histology* / Q000502:physiology*; D006352:Heart Ventricles / Q000033:anatomy & histology; D006801:Humans; D008297:Male; D013318:Stroke Volume; D016276:Ventricular Function; D016277:Ventricular Function, Left / Q000502:physiology