Peak and Per-Step Tibial Bone Stress During Walking and Running in Female and Male Recreational Runners
Peak and Per-Step Tibial Bone Stress During Walking and Running in Female and Male Recreational Runners
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DOI：
10.1177/03635465211014854
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发表时间：
2021-07-01
影响因子：
4.8
通讯作者：
Willy, Richard W.
中科院分区：
文献类型：
--
作者：
Meardon, Stacey A.;Derrick, Timothy R.;Willy, Richard W.
背景：运动员，尤其是女运动员，经历胫骨应力性损伤（bsi）的高发率。在步行和跑步过程中需要了解胫骨负荷，以了解损伤机制和设计安全的跑步进度计划。目的：研究男性和女性跑步者的胫骨负荷与步态速度的关系。研究设计：实验室对照研究。方法：收集40名休闲跑步者（男女各20名）在跑步机上4种步态速度条件下（步行、偏好跑、慢跑、快跑）的运动学和动力学数据。肌肉骨骼模型，使用参与者特定的磁共振成像和运动数据，用于估计胫骨应力。胫骨峰值应力和应力-时间脉冲采用双因素多变量方差分析（速度*性别）和事后比较（alpha = 0.05）进行分析。检查骨几何形状和胫骨力和力矩。结果：峰值压缩受速度影响（P < 0.001）；速度的增加通常会增加男女的胫骨受压。当从步行过渡到跑步时，女性的峰值张力（P = 0.001）和剪切力（P < 0.001）比男性有更大的增加。此外，女性总体上表现出更大的峰值胫骨应力（P < 0.001）。压应力和拉应力-时间脉冲随速度（P < 0.001）和性别（P = 0.006）而变化；跑步时的冲动比走路时低，而女性的冲动更高。剪切应力-时间脉冲相互作用（P < 0.001）表明，当从步行变为跑步时，女性比男性表现出更大的冲动。与男性相比，女性表现出较小的胫骨（P < 0.001）和不成比例的较低的胫骨力（P < 0.001）
Background: Athletes, especially female athletes, experience high rates of tibial bone stress injuries (BSIs). Knowledge of tibial loads during walking and running is needed to understand injury mechanisms and design safe running progression programs. Purpose: To examine tibial loads as a function of gait speed in male and female runners. Study Design: Controlled laboratory study. Methods: Kinematic and kinetic data were collected on 40 recreational runners (20 female, 20 male) during 4 instrumented gait speed conditions on a treadmill (walk, preferred run, slow run, fast run). Musculoskeletal modeling, using participant-specific magnetic resonance imaging and motion data, was used to estimate tibial stress. Peak tibial stress and stress-time impulse were analyzed using 2-factor multivariate analyses of variance (speed*sex) and post hoc comparisons (alpha = .05). Bone geometry and tibial forces and moments were examined. Results: Peak compression was influenced by speed (P < .001); increasing speed generally increased tibial compression in both sexes. Women displayed greater increases in peak tension (P = .001) and shear (P < .001) than men when transitioning from walking to running. Further, women displayed greater peak tibial stress overall (P < .001). Compressive and tensile stress-time impulse varied by speed (P < .001) and sex (P = .006); impulse was lower during running than walking and greater in women. A shear stress-time impulse interaction (P < .001) indicated that women displayed greater impulse relative to men when changing from a walk to a run. Compared with men, women displayed smaller tibiae (P < .001) and disproportionately lower tibial forces (P