■骨应力损伤(BSI)是活跃女性中常见的过度使用损伤。BSI可以归类为高风险(骨盆,骶骨,和股骨颈)或低风险(胫骨,腓骨,和meta骨)。BSI的风险因素包括低能源可用性,月经功能障碍,骨骼健康状况不佳。在有BSI病史的女性中,跑步时的垂直负荷率较高。
■这项研究的目的是描述绝经前妇女人群中与BSI相关的因素,将有高风险或低风险BSI病史的人与没有BSI病史的人进行比较。据推测,与具有低风险BSI史的女性相比,具有高风险BSI史的女性更有可能表现出较低的骨矿物质密度(BMD)和相关因素以及较差的骨微结构。相比之下,有低风险BSI病史的女性会有更高的负荷率.
■横断面研究;证据水平,3.
■登记的是15名有高风险BSI病史的女性,15具有低风险BSI历史,和15没有BSI的历史。全身的BMD,臀部,和脊柱使用双能X线骨密度仪的z评分进行标准化。高分辨率外周定量计算机断层扫描用于量化桡骨和胫骨远端的骨微结构。参与者完成了调查,描述了影响骨骼健康的因素,包括睡眠,月经史,和饮食行为-利用饮食失调检查问卷(EDE-Q)。每位参与者都使用仪器跑步机完成了生物力学评估,以测量运动前后的负荷率。
■有高危BSI病史的女性的脊柱z评分低于低危BSI患者(-1.04±0.76vs-0.01±1.15;P<.05)。有高风险BSI病史的女性,与低风险BSI和无BSI相比,形状关注(1.46±1.28vs0.76±0.78和0.43±0.43)和饮食关注(0.55±0.75vs0.16±0.38和0.11±0.21)的EDE-Q分最高,以及当前身高下最小体重和最大体重之间的最大差异(11.3±5.4vs7.7±2.9和7.6±3.3kg)(全部P<0.05)。有高危BSI病史的女性比没有BSI病史的女性更有可能在一周内平均每晚睡眠<7小时(80%vs33.3%;P<0.05)。各组之间的平均垂直负荷率和瞬时垂直负荷率没有差异。
有高风险BSI病史的女性更有可能表现出骨骼健康不良的危险因素,包括较低的BMD,而负荷率不能区分有BSI病史的女性。
UNASSIGNED: Bone stress injury (BSI) is a common overuse injury in active women. BSIs can be classified as high-risk (pelvis, sacrum, and femoral neck) or low-risk (tibia, fibula, and metatarsals). Risk factors for BSI include low energy availability, menstrual dysfunction, and poor bone health. Higher vertical load rates during running have been observed in women with a history of BSI.
UNASSIGNED: The purpose of this study was to characterize factors associated with BSI in a population of premenopausal women, comparing those with a history of high-risk or low-risk BSI with those with no history of BSI. It was hypothesized that women with a history of high-risk BSI would be more likely to exhibit lower bone mineral density (BMD) and related factors and less favorable bone microarchitecture compared with women with a history of low-risk BSI. In contrast, women with a history of low-risk BSI would have higher load rates.
UNASSIGNED: Cross-sectional study; Level of evidence, 3.
UNASSIGNED: Enrolled were 15 women with a history of high-risk BSI, 15 with a history of low-risk BSI, and 15 with no history of BSI. BMD for the whole body, hip, and spine was standardized using z scores on dual-energy x-ray absorptiometry. High-resolution peripheral quantitative computed tomography was used to quantify bone microarchitecture at the radius and distal tibia. Participants completed surveys characterizing factors that influence bone health-including sleep, menstrual history, and eating behaviors-utilizing the Eating Disorder Examination Questionnaire (EDE-Q). Each participant completed a biomechanical assessment using an instrumented treadmill to measure load rates before and after a run to exertion.
UNASSIGNED: Women with a history of high-risk BSI had lower spine z scores than those with low-risk BSI (-1.04 ± 0.76 vs -0.01 ± 1.15; P < .05). Women with a history of high-risk BSI, compared with low-risk BSI and no BSI, had the highest EDE-Q subscores for Shape Concern (1.46 ± 1.28 vs 0.76 ± 0.78 and 0.43 ± 0.43) and Eating Concern (0.55 ± 0.75 vs 0.16 ± 0.38 and 0.11 ± 0.21), as well as the greatest difference between minimum and maximum weight at current height (11.3 ± 5.4 vs 7.7 ± 2.9 and 7.6 ± 3.3 kg) (P < .05 for all). Women with a history of high-risk BSI were more likely than those with no history of BSI to sleep <7 hours on average per night during the week (80% vs 33.3%; P < .05). The mean and instantaneous vertical load rates were not different between groups.
UNASSIGNED: Women with a history of high-risk BSI were more likely to exhibit risk factors for poor bone health, including lower BMD, while load rates did not distinguish women with a history of BSI.