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首页> 外文期刊>Scandinavian journal of medicine & science in sports. >Influence of physical activity and maturation status on bone mass and geometry in early pubertal girls.
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Influence of physical activity and maturation status on bone mass and geometry in early pubertal girls.

机译:体育活动和成熟状态对青春期早期女孩的骨量和几何形状的影响。

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摘要

This study aimed to evaluate the influence of leisure-time physical activity on the development of bone mass and density in early pubertal girls. Scores of physical activity were obtained from 242 Finnish girls (10-12 years old within Tanner Stages I-II) using a questionnaire. Bone mass and density were assessed using different densitometric techniques. At Tanner Stage I, active girls had significantly higher bone mineral mass (BMC) and areal bone mineral density (aBMD) of the whole body and cortical volumetric BMD and thickness of the tibial shaft compared with sedentary girls (P<0.05). On the other hand, the active girls at Tanner Stage II showed significantly higher values only in BMC and aBMD at the lumbar spine (P=0.017 and P=0.007, respectively). These indicated that girls at Tanner Stage I with higher leisure-time physical activity level benefited more from physical activity in terms of their bone development than their less active counterparts. Our results provide evidence that the most beneficial time for physical exercise to exhibit its effect on bone development is in the earlier pubertal period for normal school children, but the positive effect on the lumbar spine is also demonstrated in Tanner Stage II.
机译:这项研究旨在评估休闲时间的体育锻炼对早期青春期女孩骨量和密度发展的影响。使用问卷调查从242名芬兰女孩(Tanner I-II阶段10-12岁)中获得了体育锻炼的分数。使用不同的光密度测定技术评估骨质量和密度。与久坐的女孩相比,在坦纳(Tanner)第一阶段,活跃的女孩的全身骨矿物质质量(BMC)和面骨矿物质密度(aBMD)显着更高,而皮质容积BMD和胫骨干厚度则更高(P <0.05)。另一方面,坦纳II期的活跃女孩仅在腰椎的BMC和aBMD中显示出较高的值(分别为P = 0.017和P = 0.007)。这些表明,在坦纳(Tanner)第一阶段,具有较高休闲时间体育活动水平的女孩比那些不太活跃的同龄人从骨骼发育方面受益于体育锻炼。我们的结果提供了证据,表明体育锻炼对骨骼发育产生影响的最有利时间是在正常学龄儿童的青春期早期,但Tanner II期也证明了对腰椎的积极影响。

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