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运动青少年从业者与非从业者的体成分与骨密度关系中的 Lean Soft Tissue 的中介作用

The Mediating Role of Lean Soft Tissue in the Relationship between Somatic Maturation and Bone Density in Adolescent Practitioners and Non-Practitioners of Sports.

机构信息

Laboratory of InVestigation in Exercise (LIVE), Department of Physical Education, Sao Paulo State University (UNESP), Presidente Prudente 19060-900, Brazil.

Center of Epidemiological Research in Nutrition and Health, Department of Nutrition, School of Public Health, University of São Paulo, São Paulo 01246-904, Brazil.

出版信息

Int J Environ Res Public Health. 2021 Mar 15;18(6):3008. doi: 10.3390/ijerph18063008.

DOI:10.3390/ijerph18063008
PMID:33804074
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8000751/
Abstract

This study aimed to identify the mediating effect of lean soft tissue (LST) in the association between somatic maturation and areal bone mineral density (aBMD) in adolescents by sex and sport participation. The sample included 558 adolescents (401 males, mean age of 14.0 years) that were practitioners of sports (11 sport modalities, = 402) and a non-sport group ( = 157). Somatic maturation was assessed by using a validated peak height velocity prediction equation. Dual-energy X-ray absorptiometry (DXA) was used to assess aBMD (upper and lower limbs, spine and total body less head-TBLH) and LST. For both sexes, LST mediated the association between somatic maturation and aBMD at all skeletal sites (mediation percentage ranging from 36.3% to 75.4%). For sport and non-sport groups, the LST also mediated the association between somatic maturation and aBMD at all skeletal sites (mediation percentage ranging from 51.6% to 85.6%). The direct effect was observed in all groups, except for lower limbs and TBLH in the non-sport group. The association between somatic maturation and aBMD was mediated by LST in adolescents of both sexes and regardless of involvement in organized sports. Our findings highlighted the role of improving LST to mitigate the association of somatic maturation with aBMD.

摘要

本研究旨在通过性别和运动参与情况，确定瘦体组织（LST）在青少年体成熟度与骨面积密度（aBMD）之间的关联中的中介作用。样本包括 558 名青少年（401 名男性，平均年龄为 14.0 岁），他们是运动的实践者（11 种运动方式，n=402）和非运动组（n=157）。体成熟度通过使用经过验证的峰值身高速度预测方程进行评估。双能 X 射线吸收法（DXA）用于评估 aBMD（上下肢、脊柱和全身除头部-TBLH）和 LST。对于男性和女性，LST 介导了体成熟度与所有骨骼部位的 aBMD 之间的关联（中介百分比范围为 36.3%至 75.4%）。对于运动组和非运动组，LST 也介导了体成熟度与所有骨骼部位的 aBMD 之间的关联（中介百分比范围为 51.6%至 85.6%）。除了非运动组的下肢和 TBLH 之外，所有组都观察到了直接效应。在所有性别和是否参与有组织运动的青少年中，体成熟度与 aBMD 之间的关联都受到 LST 的调节。我们的研究结果强调了改善 LST 以减轻体成熟度与 aBMD 之间关联的作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59ed/8000751/b7f763742498/ijerph-18-03008-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59ed/8000751/76034321ff63/ijerph-18-03008-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59ed/8000751/579063be96a3/ijerph-18-03008-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59ed/8000751/b7f763742498/ijerph-18-03008-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59ed/8000751/76034321ff63/ijerph-18-03008-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59ed/8000751/579063be96a3/ijerph-18-03008-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/59ed/8000751/b7f763742498/ijerph-18-03008-g003.jpg

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