Abstract:
:Clinicians use the combination of Tanner stage 5 (T5) of puberty, final height, and epiphyseal fusion to define maturity. We tested the hypothesis that changes in body composition related to age are identifiable during T5. Asian, Black, Hispanic, and White T5 adolescents (n = 148, 72 females) had measurements taken of their height, weight, total body potassium by 40K counting, total body water by D2O dilution; and total body bone mineral, fat-free mass, and fat mass by dual-energy X-ray absorptiometry. The relative increases with age in lean body components were greater than those in height and weight, and were greater in males. Age was a significant determinant of all body components in males, but of only bone mineral in females. The effect of age was independent of ethnicity. These findings suggest an independent effect of age on body composition during T5, especially in males. We propose that peak levels of lean body components should be included in the definition of maturity in certain clinical and metabolic situations.
journal_name
Ann N Y Acad Scijournal_title
Annals of the New York Academy of Sciencesauthors
Horlick M,Thornton J,Wang J,Levine LS,Fedun B,Pierson RN Jrdoi
10.1111/j.1749-6632.2000.tb06491.xsubject
Has Abstractpub_date
2000-05-01 00:00:00pages
410-5eissn
0077-8923issn
1749-6632journal_volume
904pub_type
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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journal_title:Annals of the New York Academy of Sciences
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