Maturação somática e o relacionamento entre variáveis minerais ósseas e modalidades esportivas em adolescentes: Estudo transversal

Translated title of the contribution: Somatic maturation and the relationship between bone mineral variables and types of sports among adolescents: Cross-sectional study

Ricardo Ribeiro Agostinete*, Igor Hideki Ito, Han Kemper, Carlos Marcelo Pastre, Mário Antônio Rodrigues-Júnior, Rafael Luiz-De-Marco, Rômulo Araújo Fernandes

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

CONTEXT AND OBJECTIVE: Peak height velocity (PHV) is an important maturational event during adolescence that affects skeleton size. The objective here was to compare bone variables in adolescents who practiced different types of sports, and to identify whether differences in bone variables attributed to sports practice were dependent on somatic maturation status. DESIGN AND SETTING: Cross-sectional study, São Paulo State University (UNESP). METHODS: The study was composed of 93 adolescents (12 to 16.5 years old), divided into three groups: no-sport group (n = 42), soccer/basketball group (n = 26) and swimming group (n = 25). Bone mineral density and content were measured using dual-energy x-ray absorptiometry and somatic maturation was estimated through using peak height velocity. Data on training load were provided by the coaches. RESULTS: Adolescents whose PHV occurred at an older age presented higher bone mineral density in their upper limbs (P = 0.018). After adjustments for confounders, such as somatic maturation, the swimmers presented lower values for bone mineral density in their lower limbs, spine and whole body. Only the bone mineral density in the upper limbs was similar between the groups. There was a negative relationship between whole-body bone mineral content and the weekly training hours (β: -1563.967; 95% confidence interval, CI: -2916.484 to -211.450). CONCLUSION: The differences in bone variables attributed to sport practice occurred independently of maturation, while high training load in situations of hypogravity seemed to be related to lower bone mass in swimmers.

Original languagePortuguese
Pages (from-to)253-259
Number of pages7
JournalSao Paulo Medical Journal
Volume135
Issue number3
DOIs
Publication statusPublished - 1 May 2017

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