Distal radius geometry and skeletal strength indices after peripubertal artistic gymnastics.
Distal radius geometry and skeletal strength indices after peripubertal artistic gymnastics.
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DOI：
10.1007/s00198-010-1233-2
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发表时间：
2011-01
影响因子：
4
通讯作者：
Scerpella, T. A.
中科院分区：
文献类型：
--
作者：
Dowthwaite, J. N.;Scerpella, T. A.
最佳骨骼强度的发展应该减少成人骨骼的脆弱性。将非体操运动员（NON）与生长期间接触体操的女孩（EX/GYM）进行比较，使用外周定量计算机断层扫描（pQCT）评估月经初端后骨几何形状、密度和强度。考古前和考古周围的体操负荷产生优势的指数考古前骨几何和骨骼强度。先前的两项使用pQCT的研究报告了Tanner I/II体操运动员的骨密度和大小优势，但没有一项研究描述了体操运动员在青春期后期的骨骼特性。目前的研究使用pQCT来评估在儿童晚期生长和骨干周围生长期间接触体操的女孩是否表现出更大的桡骨远端几何形状、密度和骨骼强度指数。绝经后受试者分别进行了4%和33%的远端桡骨pQCT扫描，得到：1)vBMD和横截面积（CSA）（总骨，腔室）；2)极性强度应变指数；3)轴压结构强度指标。比较EX/GYM与NON的输出，调整妇科年龄和身材（成熟度和体型）、报告方法、标准误差和显著性。绝经后EX/GYM 16例（年龄16.7岁，妇科3.4岁），NON 13例（年龄16.2岁，妇科3.6岁）。在干骺端和干骺端，EX/GYM的CSA和骨强度指标均高于NON；EX/GYM组的髓内CSA比NON组大79% （p<0.05）。EX/GYM组4%骨小梁vBMD显著增高；4%的总vBMD和33%的皮质vBMD没有发现差异。与非体操运动员相比，经前/经周体操训练后的EX/GYM患者桡骨远端几何形状指数和骨骼强度指数（干骺端和骨干）更高，干骺端小梁vBMD更高；更大的髓内腔尤为显著。
Development of optimal skeletal strength should decrease adult bone fragility. Nongymnasts (NON) were compared with girls exposed to gymnastics during growth (EX/GYM), using peripheral quantitative computed tomography (pQCT) to evaluate postmenarcheal bone geometry, density, and strength. Pre- and perimenarcheal gymnastic loading yields advantages in indices of postmenarcheal bone geometry and skeletal strength. Two prior studies using pQCT have reported bone density and size advantages in Tanner I/II gymnasts, but none describe gymnasts’ bone properties later in adolescence. The current study used pQCT to evaluate whether girls exposed to gymnastics during late childhood growth and perimenarcheal growth exhibited greater indices of distal radius geometry, density, and skeletal strength. Postmenarcheal subjects underwent 4% and 33% distal radius pQCT scans, yielding: 1) vBMD and cross-sectional areas (CSA) (total bone, compartments); 2) polar strength-strain index; 3) index of structural strength in axial compression. Output was compared for EX/GYM vs. NON, adjusting for gynecological age and stature (maturity and body size), reporting means, standard errors, and significance. Sixteen postmenarcheal EX/GYM (age 16.7 years; gynecological age 3.4 years) and 13 NON (age 16.2 years; gynecological age 3.6 years) were evaluated. At both diaphysis and metaphysis, EX/GYM exhibited greater CSA and bone strength indices than NON; EX/GYM exhibited 79% larger intramedullary CSA than NON (p<0.05). EX/GYM had significantly higher 4% trabecular vBMD; differences were not detected for 4% total vBMD and 33% cortical vBMD. Following pre-/perimenarcheal gymnastic exposure, relative to nongymnasts, postmenarcheal EX/GYM demonstrated greater indices of distal radius geometry and skeletal strength (metaphysis and diaphysis) with greater metaphyseal trabecular vBMD; larger intramedullary cavity size was particularly striking.
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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：
4.1
作者：
Sievanen, H;Kannus, P;Vuori, I
通讯作者：
Vuori, I
影响因子：
6.2
作者：
Bass, SL;Saxon, L;Stuckey, S
通讯作者：
Stuckey, S
影响因子：
6.2
作者：
Eser, Prisca;Hill, Briony;Bass, Shona
通讯作者：
Bass, Shona
影响因子：
3.8
作者：
Ruff, C
通讯作者：
Ruff, C