Sustained skeletal benefit from childhood mechanical loading.
Sustained skeletal benefit from childhood mechanical loading.
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DOI：
10.1007/s00198-010-1373-4
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发表时间：
2011-07
影响因子：
4
通讯作者：
Rosenbaum, P. F.
中科院分区：
文献类型：
--
作者：
Scerpella, T. A.;Dowthwaite, J. N.;Rosenbaum, P. F.
初步的前瞻性、纵向研究结果表明，月经初期前接触艺术体操与整个生长过程和成年早期（活动停止后4年多）的更大半径BMC、aBMD和投影面积有关。与取消培训有关的任何利益损失似乎都是暂时的。在生长过程中，机械负荷可能会增强骨的累积，但益处保留的前瞻性证据有限。这项前瞻性的纵向队列研究测试了体操在生长期间和停止训练后四年或更长时间内是否与远端桡骨优势有关。前体操运动员和非体操运动员每半年进行一次身高和体重测量；问卷评估了钙摄入量、身体活动和成熟度。每年双能x线吸收仪扫描（Hologic QDR 4500W）测量全身无脂质量、颅骨面密度（aBMD）和骨矿物质含量（BMC）；前臂扫描测量超远端和1/3半径区域、BMC和aBMD。分析纳入标准为：(1)达到妇科年龄> ~ 4岁；(2)体操运动员，> ~ 2年经前训练（> ~ 6小时/周），在月经来潮前0.5年至月经来潮后1年停止。层次线性模型（HLM v6.0）评估前体操运动员与非体操运动员的结果；斜率/截距不连续评估去训练效果。来自14名非体操运动员和6名前体操运动员的数据代表了月经初潮前4年至月经初潮后9年的结果。所有调整后的桡骨远端参数，前体操运动员均高于非体操运动员（p<0.02）。超远端BMC、超远端aBMD、1/3 aBMD随运动停止而暂时性降低（p<0.04）；超远端区、1/3区、1/3 BMC无明显变化。颅骨结果在两组之间没有差异，也没有随活动停止而改变。在儿童期和青春期早期进行体操锻炼与更大的桡骨骨量、大小和aBMD有关。尽管去训练会导致密度和质量的短暂损失，但在整个生长过程中以及停止运动后至少4年直至成年早期，骨骼都能得到显著的益处。
Preliminary prospective, longitudinal results suggest that pre-menarcheal exposure to artistic gymnastics is associated with greater radius BMC, aBMD, and projected area throughout growth and into early adulthood, more than 4 years after activity cessation. Any loss of benefit associated with de-training appears to be temporary. Mechanical loading may enhance bone accrual during growth, but prospective evidence of benefit retention is limited. This prospective, longitudinal cohort study tests whether gymnastics is linked to distal radius advantages during growth and four or more years post-training cessation. Semi-annually, female ex/gymnasts and non-gymnasts underwent height and weight measurements; questionnaires assessed calcium intake, physical activity, and maturation. Annual dual energy X-ray absorptiometry scans (Hologic QDR 4500W) measured total body fat-free mass, skull areal density (aBMD), and bone mineral content (BMC); forearm scans measured ultradistal and 1/3 radius area, BMC, and aBMD. Analysis inclusion criteria were: (1) achievement of gynecological age >4 years and (2) for gymnasts, >2 years of pre-menarcheal training (>6 h/week), ceasing between 0.5 year pre-menarche and 1 year post-menarche. Hierarchical linear modeling (HLM v6.0) evaluated outcomes for ex/gymnasts versus non-gymnasts; a slope/intercept discontinuity evaluated de-training effects. Data from 14 non-gymnasts and six ex/gymnasts represented outcomes from 4 years pre-menarche to 9 years post-menarche. All adjusted distal radius parameters were higher in ex/gymnasts than non-gymnasts (p<0.02). Ultradistal BMC, ultradistal aBMD, and 1/3 aBMD temporarily decreased with gymnastic cessation (p<0.04); ultradistal area, 1/3 area, and 1/3 BMC did not change significantly. Skull outcomes did not differ between groups or change with activity cessation. Gymnastic exposure during childhood and early puberty is associated with greater radius bone mass, size, and aBMD. Despite brief de-training losses in density and mass, significant skeletal benefits are manifested throughout growth and at least 4 years beyond activity cessation into early adulthood.
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影响因子：
4.1
作者：
Dyson, K;Blimkie, CJR;Adachi, JD
通讯作者：
Adachi, JD
影响因子：
6.2
作者：
Eser, Prisca;Hill, Briony;Bass, Shona
通讯作者：
Bass, Shona
影响因子：
4.1
作者：
Gunter, Katherine;Baxter-Jones, Adam D. G.;Snow, Christine
通讯作者：
Snow, Christine
影响因子：
6.2
作者：
Gunter, Katherine;Baxter-Jones, Adam D. G.;Snow, Christine
通讯作者：
Snow, Christine
影响因子：
6.2
作者：
Zanker, CL;Gannon, L;Truscott, JG
通讯作者：
Truscott, JG