Olympic fencers: adaptations in cortical and trabecular bone determined by quantitative computed tomography
Olympic fencers: adaptations in cortical and trabecular bone determined by quantitative computed tomography
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DOI：
10.1007/s00198-008-0730-z
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发表时间：
2009-05-01
影响因子：
4
通讯作者：
Schweitzer, M. E.
中科院分区：
文献类型：
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作者：
Chang, G.;Regatte, R. R.;Schweitzer, M. E.
我们调查了美国奥运击剑队队员的皮质骨、松质骨和肌肉是如何适应的。与对照组相比，这些运动员表现出股骨皮质骨扩张，股骨远端骨小梁密度更大，肌肉质量更大。这是第一个研究奥运会击剑运动员肌肉骨骼适应性的研究。沃尔夫定律指出，骨重建根据机械力施加在它。我们的目标是确定如何皮质骨和松质骨适应奥运会运动员谁执行间歇性高冲击活动。9名男性从2004年美国奥运会击剑队和9个匹配的对照进行了定量计算机断层扫描评估。沿股骨干以50%和75%沿着扫描股骨。我们评估了皮质厚度（C.Th）、皮质（C.Ar）、骨小梁（Tb.Ar）和总骨面积（Tot.Ar），C.Ar和Tb.Ar与Tot.Ar、皮质（C. BMD）的比例，击剑运动员具有更高的C.Th（+24.5至38.8%）、C.Ar（+16.9至19.6%）、C.Ar/Tot.Ar（+6.3至16.3%）和更低的Tb.Ar/Tot. Ar（-23.5%至23.8%; p < 0.05）。击剑运动员优势股与非优势股的C.Th存在正差异，分别为50%（+5.4%，p = 0.040）和75%（+13.8%，p = 0.048，协方差分析）。击剑运动员在75%（p = 0.025）时Tb.BMD增加54%，但在50%（p = 0.63）时没有增加。两组的C.BMD无差异（50%时p = 0.66，75%时p = 0.88）。击剑运动员在优势股的M.Ar（+30%）和不对称的M.Ar（+12.2%）更大（p < 0.004）。在进行间歇性高冲击活动的世界级运动员中，皮质骨扩张，骨小梁密度更大，肌肉质量更大。这是第一个研究奥运击剑运动员的肌肉骨骼适应性。
We investigated how cortical bone, trabecular bone, and muscle adapt in US Olympic Fencing Team members. These athletes demonstrate femoral cortical bone expansion, greater distal femoral trabecular bone density, and greater muscle mass compared to controls. This is the first study to investigate musculoskeletal adaptations in Olympic fencers.Wolff's law states that bone remodels according to mechanical forces placed upon it. Our goal was to determine how cortical and trabecular bone adapt in Olympic athletes who perform intermittent high-impact activity.Nine males from the 2004 US Olympic Fencing Team and nine matched controls were evaluated by quantitative computed tomography. Femurs were scanned at 50% and 75% along the shaft. We evaluated cortical thickness (C.Th), cortical (C.Ar), trabecular (Tb.Ar), and total bone areas (Tot.Ar), proportions of C.Ar and Tb.Ar to Tot.Ar, cortical (C.BMD.), trabecular (Tb.MBD), and total bone densities (Tot.BMD), muscle (M.Ar), and thigh areas (Th.Ar).Fencers had greater C.Th (+24.5 to 38.8%), C.Ar (+16.9 to 19.6%), C.Ar/Tot.Ar (+6.3 to 16.3%), and lower Tb.Ar/Tot.Ar (-23.5% to -23.8%; p < 0.05). Fencers demonstrated a positive difference in C.Th in the dominant vs. nondominant thigh at 50% (+5.4%, p = 0.040) and at 75% (+13.8%, p = 0.048 by analysis of covariance). Fencers had 54% greater Tb.BMD at 75% (p = 0.025), but not at 50% (p = 0.63). There was no difference between groups for C.BMD (p = .66 at 50%, p = 0.88 at 75%). Fencers had greater M.Ar (+30%) and asymmetrically greater M.Ar (+12.2%) in the dominant thigh (p < 0.004).In world-class athletes who perform intermittent, high-impact activity, cortical bone expands, trabecular bone density is greater, and muscle mass is greater. This is the first study to examine musculoskeletal adaptations in Olympic fencers.