Document Detail

Echocardiographic estimates related to various body size measures in athletes.
MedLine Citation:
PMID:  9046363     Owner:  NLM     Status:  MEDLINE    
In comparing subjects of different body size echocardiographically measured data have usually been related to various body measures, mostly to body surface area (BSA). The present study serves to point out an inherent error of this procedure. Two-dimensionally guided M-mode echocardiography was performed in 106 elite male athletes. Left ventricular diastolic wall thickness (LVWT), internal diameter (LVID), and estimated left ventricular muscle mass (LVMM), stroke volume (SV) and cardiac output (CO) were related to body height (BH), body weight (BW), fat-free body mass (FFBM) and BSA. The analysis of the 20 indices has revealed that most indices and above all the BSA-related ones suffer from systematic errors so they are unsuitable to compare subjects independently from body size as they significantly correlate with BSA. These errors arise from the fact that the numerator and the denominator of these quotients differ in their power terms. With higher absolute component values all relativized quotients containing a numerator raised to a smaller power than its denominator is bound to decrease (e.g. LVWT/BSA, LVID/BSA) while quotients in which the numerator's exponent exceeds that of the denominator will increase (e.g. LVMM/BSA, CO/BSA). To avoid such spurious trends it would be wiser to use indices in which power terms match. When relations to BSA are preferred, its square root appears more suitable for linear numerators (wall thickness, diameters), while for volumes and weights the cube of the square root of BSA is suggested. In the general case, however, a dimensional consistence in choosing the relativizing parameter is recommended.
G Paylik; Z Olexó; R Frenkl
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta physiologica Hungarica     Volume:  84     ISSN:  0231-424X     ISO Abbreviation:  Acta Physiol Hung     Publication Date:  1996  
Date Detail:
Created Date:  1997-05-05     Completed Date:  1997-05-05     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8309201     Medline TA:  Acta Physiol Hung     Country:  HUNGARY    
Other Details:
Languages:  eng     Pagination:  171-81     Citation Subset:  IM    
Department of Health Sciences and Sports Medicine, Hungarian University of Physical Education, Budapest, Hungary.
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MeSH Terms
Body Constitution*
Body Mass Index
Body Surface Area
Body Weight
Heart / anatomy & histology*,  physiology*
Regression Analysis

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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