Ducher G, Hill B L, Angeli T, Bass S L, Eser P
Centre for Physical Activity and Nutrition Research, Deakin University, Burwood, Australia.
J Musculoskelet Neuronal Interact. 2009 Oct-Dec;9(4):247-55.
To compare the skeletal benefits associated with gymnastics between ulna and radius.
19 retired artistic gymnasts, aged 18-36 years, were compared to 24 sedentary women. Bone mineral content (BMC), total and cortical bone area (ToA, CoA), trabecular and cortical volumetric density (TrD, CoD) and cortical thickness (CoTh) were measured by pQCT at the 4% and 66% forearm.
At the 4% site, BMC and ToA were more than twice greater at the radius than ulna whereas at the 66% site, BMC, ToA, CoA, CoTh and SSIpol were 20 to 51% greater at the ulna than radius in both groups (p<0.0001). At the 4% site, the skeletal benefits in BMC of the retired gymnasts over the non-gymnasts were 1.9 times greater at the radius than ulna (p<0.001), with enlarged bone size at the distal radius only. In contrast, the skeletal benefits at the 66% site were twice greater at the ulna than radius for BMC and CoA (p<0.01).
Whereas the skeletal benefits associated with long-term gymnastics were greater at the radius than ulna in the distal forearm, the reverse was found in the proximal forearm, suggesting both bones should be analysed when investigating forearm strength.
比较体操运动对尺骨和桡骨骨骼的益处。
将19名年龄在18 - 36岁的退役艺术体操运动员与24名久坐不动的女性进行比较。通过外周定量计算机断层扫描（pQCT）测量前臂4%和66%处的骨矿物质含量（BMC）、总骨面积和皮质骨面积（ToA、CoA）、小梁骨和皮质骨体积密度（TrD、CoD）以及皮质厚度（CoTh）。
在4%位点处，桡骨的BMC和ToA比尺骨高出两倍多；而在66%位点处，两组中尺骨的BMC、ToA、CoA、CoTh和SSIpol均比桡骨大20%至51%（p<0.0001）。在4%位点处，退役体操运动员相对于非体操运动员，桡骨BMC的骨骼益处比尺骨大1.9倍（p<0.001），仅桡骨远端骨尺寸增大。相比之下，在66%位点处，尺骨BMC和CoA的骨骼益处比桡骨大两倍（p<0.01）。
长期体操运动对前臂远端骨骼的益处桡骨大于尺骨，而在前臂近端情况则相反，这表明在研究前臂力量时应同时分析两根骨头。
