Journal
ANNALS OF HUMAN BIOLOGY
Volume 41, Issue 5, Pages 465-468Publisher
INFORMA HEALTHCARE
DOI: 10.3109/03014460.2013.866694
Keywords
Allometry; echocardiography; growth; maturation; youth
Funding
- Portuguese Foundation for Science and Technology [SFRH/BD/64648/2009]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/64648/2009] Funding Source: FCT
Ask authors/readers for more resources
Background: Normalizing left ventricular mass (LVM) for inter-individual variation in body size is a central issue in human biology. During the adolescent growth spurt, variability in body size descriptors needs to be interpreted in combination with biological maturation. Aim: To examine the contribution of biological maturation, stature, sitting height, body mass, fat-free mass (FFM) and fat mass (FM) to inter-individual variability in LVM in boys, using proportional allometric modelling. Subjects and methods: The cross-sectional sample included 110 boys of 11-15 years (12.9-1.0 years). Stature, sitting height, body mass, cardiac chamber dimensions and LVM were measured. Age at peak height velocity (APHV) was predicted and used as an indicator of biological maturation. Percentage fat was estimated from triceps and subscapular skinfolds; FM and FFM were derived. Results: Exponents for body size descriptors were k = 2.33 for stature, k = 2.18 for sitting height, k = 0.68 for body mass, k = 0.17 for FM and k = 0.80 for FFM (adjusted R-2 = 19-62%). The combination of body descriptors and APHV increased the explained variance in LVM (adjusted R-2 = 56-69%). Conclusion: Stature, FM and FFM are the best combination for normalizing LVM in adolescent boys; when body composition is not available, an indicator of biological maturity should be included with stature.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available