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首页> 外文期刊>Sao Paulo Medical Journal >Somatic maturation and the relationship between bone mineral variables and types of sports among adolescents: cross-sectional study
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Somatic maturation and the relationship between bone mineral variables and types of sports among adolescents: cross-sectional study

机译：体细胞成熟以及青少年骨质变量与运动类型之间的关系：横断面研究

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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, S?￡o 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 (?2: -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.
机译：背景与目的：峰高速度（PHV）是青春期重要的成熟事件，会影响骨骼的大小。此处的目的是比较从事不同运动类型的青少年的骨骼变量，并确定归因于体育锻炼的骨骼变量的差异是否取决于躯体成熟状态。设计与环境：横断面研究，圣保罗州立大学（UNESP）。方法：该研究由93名青少年（12至16.5岁）组成，分为三组：无运动组（n = 42），足球/篮球组（n = 26）和游泳组（n = 25）。使用双能X射线吸收法测量骨矿物质密度和含量，并使用峰高速度估算体细胞成熟度。有关训练负荷的数据由教练提供。结果：PHV年龄较大的青少年上肢的骨矿物质密度较高（P = 0.018）。在对混杂因素进行了调整（例如体细胞成熟）之后，游泳者的下肢，脊柱和全身的骨矿物质密度值较低。两组之间只有上肢的骨矿物质密度相似。全身骨矿物质含量与每周训练时间之间呈负相关（？2：-1563.967; 95％置信区间，CI：-2916.484至-211.450）。结论：运动习惯造成的骨骼变量差异独立于成熟而发生，而在低重力情况下的高训练负荷似乎与游泳者的骨量降低有关。

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