Impact loading in female runners with single and multiple bone stress injuries during fresh and exerted conditions.
Impact loading in female runners with single and multiple bone stress injuries during fresh and exerted conditions.
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DOI：
10.1016/j.jshs.2022.02.004
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发表时间：
2023-05
影响因子：
11.7
通讯作者：
Davis, Irene S.
中科院分区：
文献类型：
--
作者：
Popp, Kristin L.;Outerleys, Jereme;Gehman, Sarah;Garrahan, Margaret;Rudolph, Sara;Loranger, Elizabeth;Ackerman, Kathryn E.;Tenforde, Adam S.;Bouxsein, Mary L.;Davis, Irene S.
垂直平均负荷率（VALR）、垂直瞬时负荷率（VILR）、垂直刚度和在器械跑步机上开始运动时的胫骨冲击在没有骨应力损伤史（BSI）的女性跑步者和有一次或多次骨应力损伤史的女性跑步者中相似。在BSI组中，VALR、VILR、垂直刚度和跑步机运动结束时的胫骨冲击相似。与无BSI组相比，有多重BSI的女性在运动时VALR和VILR有更大的增加。与无BSI组相比，有多个和1个BSI的女性在运动时垂直刚度和胫骨冲击增加更多。骨应力性损伤（BSI）在女性跑步者中很常见，并且复发性BSI率很高。先前的研究表明，跑步时较高的冲击负荷与胫骨BSI之间存在关联。然而，目前尚不清楚冲击负荷和疲劳相关负荷变化是否会对多发性脑损伤史的女性造成歧视。本研究比较了无BSI病史的女性跑步者和有单一或多重BSI病史的女性跑步者在跑步开始时的影响变量和这些变量随运动的变化。我们招募了45名女性跑步者（18-40岁）进行这项横断面研究：没有诊断为下肢BSI的病史（n -BSI, n = 14）；1例下肢BSI病史（1-BSI, n = 16）；经影像学诊断，或有多发性（≥3例）下肢bsi病史（M-BSI, n = 15）。参与者戴着惯性测量装置，在仪器跑步机上完成了5公里的比赛速度跑。在跑步开始和结束时测量垂直平均加载率（VALR），垂直瞬时加载率（VILR），通过仪器跑步机冲击时的垂直刚度，以及通过惯性测量单元确定为胫骨峰值正加速度的胫骨冲击。在新鲜或施加条件下，各组之间的VALR、VILR、垂直刚度或胫骨冲击没有差异。然而，与N-BSI相比，M-BSI女性的VALR （-1.8% vs. 6.1%, p = 0.01）和VILR （1.5% vs. 4.8%, p = 0.03）的运动增加更大。同样，与N-BSI相比，M-BSI女性（-0.9% vs. 7.3%, p = 0.006）和1-BSI女性（-0.9% vs. 1.8%, p = 0.05）的垂直刚度随着运动而增加。最后，与N-BSI相比，M-BSI女性从新鲜状态到运动状态的胫骨休克增加更大（0.9%对5.5%,p = 0.03）和1-BSI女性（0.9%对11.2%,p = 0.02）。1-BSI或m - bsi的女性比N-BSI的女性经历更大的与用力相关的冲击负荷增加。这些观察结果表明，运动相关的步态生物力学变化可能会增加BSI的风险。
The vertical average loading rate (VALR), vertical instantaneous loading rate (VILR), vertical stiffness, and tibial shock at the beginning of an instrumented treadmill run to exertion are similar in female runners with no history of bone stress injury (BSI) and those with a history of 1 or multiple BSIs. VALR, VILR, vertical stiffness, and tibial shock at the end of the instrumented treadmill run to exertion are similar between BSI groups. Compared to the no BSI group, women with multiple BSI had greater increases in VALR and VILR with exertion. Compared to the no BSI group, vertical stiffness and tibial shock increased more with exertion among women with multiple and 1 BSI. Bone stress injuries (BSIs) are common in female runners, and recurrent BSI rates are high. Previous work suggests an association between higher impact loading during running and tibial BSI. However, it is unknown whether impact loading and fatigue-related loading changes discriminate women with a history of multiple BSIs. This study compared impact variables at the beginning of a treadmill run to exertion and the changes in those variables with exertion among female runners with no history of BSI as well as among those with a history of single or multiple BSIs. We enrolled 45 female runners (aged 18–40 years) for this cross-sectional study: having no history of diagnosed lower extremity BSI (N-BSI, n = 14); a history of 1 lower extremity BSI (1-BSI, n = 16); and diagnosed by imaging, or a history of multiple (≥3) lower extremity BSIs (M-BSI, n = 15). Participants completed a 5-km race speed run on an instrumented treadmill while wearing an Inertial Measurement Unit. The vertical average loading rate (VALR), vertical instantaneous loading rate (VILR), vertical stiffness during impact via instrumented treadmill, and tibial shock determined as the peak positive tibial acceleration via Inertial Measurement Unit were measured at the beginning and the end of the run. There were no differences between groups in VALR, VILR, vertical stiffness, or tibial shock in a fresh or exerted condition. However, compared to N-BSI, women with M-BSI had greater increase with exertion in VALR (–1.8% vs. 6.1%, p = 0.01) and VILR (1.5% vs. 4.8%, p = 0.03). Similarly, compared to N-BSI, vertical stiffness increased more with exertion among women with M-BSI (–0.9% vs. 7.3%, p = 0.006) and 1-BSI (–0.9% vs. 1.8%, p = 0.05). Finally, compared to N-BSI, the increase in tibial shock from fresh to exerted condition was greater among women with M-BSI (0.9% vs. 5.5%, p = 0.03) and 1-BSI (0.9% vs. 11.2%, p = 0.02). Women with 1-BSI or M-BSIs experience greater exertion-related increases in impact loading than women with N-BSI. These observations imply that exertion-related changes in gait biomechanics may contribute to risk of BSI.
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影响因子：
4.1
作者：
Enoka RM;Duchateau J
通讯作者：
Duchateau J
DOI：
10.1097/00005768-200206000-00015
发表时间：
2002-06-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Derrick, TR;Dereu, D;McLean, SP
通讯作者：
McLean, SP
DOI：
10.1249/01.mss.0000158994.29358.71
发表时间：
2005-04-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Gerlach, KE;White, SC;Horvath, PJ
通讯作者：
Horvath, PJ
影响因子：
4.1
作者：
Armstrong, DW;Rue, JPH;Frassica, FJ
通讯作者：
Frassica, FJ
DOI：
10.1249/01.mss.0000183477.75808.92
发表时间：
2006-02-01
期刊：
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
影响因子：
--
作者：
Milner, CE;Ferber, R;Davis, IS
通讯作者：
Davis, IS