Bennett Jason E, Austin Tricia M, Hayes Ann M, Reinking Mark F
Department of Physical Therapy, Carroll University (WI).
Department of Physical Therapy and Athletic Training, Saint Louis University.
Int J Sports Phys Ther. 2022 Feb 2;17(2):218-227. doi: 10.26603/001c.31653. eCollection 2022.
There is limited evidence describing the relationship between calcaneal bone mineral density (cBMD) and activity level, menstrual history, or the development of bone stress injury (BSI).
HYPOTHESIS/PURPOSE: The purposes of this study were to: 1) examine the influence of physical activity on cBMD in healthy college students (HCS), 2) determine if there is an association between cBMD, body mass index (BMI), sex, menstrual history, and history of BSI in HCS, and 3) compare the cBMD of HCS to cBMD data collected on intercollegiate athletes (ICA) from a previous study.
Cross-sectional design.
This cross-sectional study recruited a convenience sample of HCS at one institution. Subjects provided self-reported injury and menstrual history, completed a physical activity questionnaire, and cBMD and BMI measures were obtained. Descriptive statistics, statistical analyses of relationships (Chi-square and relative risk), logistic regression, and differences (t-tests) were used in the statistical analyses.
One hundred three HCS (82 female, 21 male; age 21.9 ± 1.13) consented to participate. The composite score for work, leisure, and sport activity ranged from 5.6 to 11.1 (7.9 ± 1.1) for HCS subjects. There was no significant correlation between cBMD and physical activity in HCS, however, a significant correlation was found between reported age of onset of menstruation and left and right cBMD (r = -0.22 and r = -0.23; p < 0.05) and history of secondary amenorrhea and history of BSI (r = 0.32; p < 0.05). There was no difference in cBMD between the male ICA and male HCS, but highly significant differences in cBMD between the female ICA and female HCS groups (p < 0.000).
Age of menarche and secondary amenorrhea are significantly associated with cBMD and history of BSI in HCS subjects, respectively. Differences in cBMD among the HCS subjects were not related to activity level. cBMD was significantly lower in female HCS as compared to female ICA. This difference in cBMD between ICA and HCS may be activity related.
Level 3.
关于跟骨骨密度（cBMD）与活动水平、月经史或骨应力损伤（BSI）发生之间关系的证据有限。
假设/目的：本研究的目的是：1）研究体育活动对健康大学生（HCS）跟骨骨密度的影响；2）确定HCS中跟骨骨密度、体重指数（BMI）、性别、月经史和BSI病史之间是否存在关联；3）将HCS的跟骨骨密度与先前一项研究中收集的大学生运动员（ICA）的跟骨骨密度数据进行比较。
横断面设计。
这项横断面研究在一所机构招募了便利样本的HCS。受试者提供自我报告的损伤和月经史，完成一份体育活动问卷，并获取跟骨骨密度和BMI测量值。统计分析中使用了描述性统计、关系的统计分析（卡方检验和相对风险）、逻辑回归和差异分析（t检验）。
103名HCS（82名女性，21名男性；年龄21.9±1.13）同意参与。HCS受试者的工作、休闲和体育活动综合得分在5.6至11.1之间（7.9±1.1）。HCS中跟骨骨密度与体育活动之间无显著相关性，然而，月经初潮报告年龄与左右跟骨骨密度之间存在显著相关性（r=-0.22和r=-0.23；p<0.05），继发性闭经病史与BSI病史之间也存在显著相关性（r=0.32；p<0.05）。男性ICA和男性HCS之间的跟骨骨密度无差异，但女性ICA和女性HCS组之间的跟骨骨密度存在高度显著差异（p<0.000）。
月经初潮年龄和继发性闭经分别与HCS受试者的跟骨骨密度和BSI病史显著相关。HCS受试者之间跟骨骨密度的差异与活动水平无关。与女性ICA相比，女性HCS的跟骨骨密度显著较低。ICA和HCS之间跟骨骨密度的这种差异可能与活动有关。
3级。
