Ground reaction forces, bone characteristics, and tibial stress fracture in male runners
Ground reaction forces, bone characteristics, and tibial stress fracture in male runners
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DOI：
10.1097/00005768-199908000-00002
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发表时间：
1999-08-01
期刊：
影响因子：
--
通讯作者：
Oakes, BW
中科院分区：
文献类型：
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作者：
Crossley, K;Bennell, KL;Oakes, BW
目的：胫骨应力性骨折是一种常见的过度使用性跑步损伤，由反复的机械负荷引起。本研究旨在确定有胫骨应力性骨折（TSF）病史的跑步者在跑步过程中的胫骨几何形状、胫骨骨量和地面反作用力（GRF）参数与从未发生过应力性骨折（NSF）的跑步者是否不同。方法：招募了46名年龄从18岁到42岁的男性跑步运动员（23名TSF; 23名NSF）进行这项横断面研究。在4.0 m.s（-1）下运行期间，使用测力平台测量选定的GRF参数（垂直冲击力、垂直主动力和水平制动力的峰值和峰值时间）。胫骨几何形状（横截面尺寸和面积）通过中间和远端三分之一交界处的计算机断层扫描（CT）计算。双能X线吸收法（DXA）提供胫骨面积、骨矿物质含量（BMC）和骨矿物质密度（BMD）的测量。结果如下：调整身高和体重后，TSF组的胫骨横截面积（P = 0.02）和DXA胫骨面积（P = 0.02）显著小于NSF组。组间GRF、胫骨BMC或胫骨BMD无显著差异。结论：这些发现支持了骨几何形状在应力性骨折发展中起作用的论点，并且与身体尺寸相关的骨骼较小的男性运动员发生这种骨损伤的风险更大。
Purpose: Tibial stress fracture is a common overuse running injury resulting from repetitive mechanical loading. This research project aimed to determine whether runners with a history of tibial stress fracture (TSF) differ in tibial bone geometry, tibial bone mass, and ground reaction force (GRF) parameters during running from those who have never sustained a stress fracture (NSF). Methods: Forty-six male running athletes (23 TSF; 23 NSF) ranging in age from 18 to 42 yr were recruited for this cross-sectional study. A force platform was used to measure selected GRF parameters (peak and time to peak for vertical impact force, vertical active force, and horizontal braking force) during running at 4.0 m.s(-1). Tibial bone geometry (cross-sectional dimensions and area) was calculated from a computerized tomography (CT) scan at the junction of the middle and distal thirds. Dual energy x-ray absorptiometry (DXA) provided measurements of tibial bone area, bone mineral content (BMC), and bone mineral density (BMD). Results: The TSF group had significantly smaller tibial cross-sectional area (P = 0.02) and DXA tibial bone area (P = 0.02), after adjusting for height and weight, than the NSF group. There were no significant differences between groups for GRF, tibial BMC, or tibial BMD. Conclusion: These findings support the contention that bone geometry plays a role in stress fracture development and that male athletes with smaller bones in relation to body size are at greater risk for this bony injury.