Venable Elena N, Seynaeve Lily A, Beale Scott T, Gamez Albert, Domingo Antoinette, Rosenthal Michael D, Rauh Mitchell J
Doctor of Physical Therapy Program, San Diego State University.
Doctor of Physical Therapy Program, University of Nebraska Medical Center.
Int J Sports Phys Ther. 2022 Oct 1;17(6):1053-1062. doi: 10.26603/001c.38017. eCollection 2022.
Female collegiate cross-country (XC) runners have a high incidence of running-related injury (RRI). Limited reports are available that have examined potential intrinsic factors that may increase RRI risk in this population.
To examine the relationships between RRI, hip muscle strength, and lower extremity running kinematics in female collegiate XC runners.
Prospective observational cohort.
Participants included twenty female NCAA collegiate XC runners from Southern California universities who competed in the 2019-20 intercollegiate season. A pre-season questionnaire was used to gather demographic information. Hip muscle strength was measured with isokinetic dynamometry in a sidelying open-chain position and normalized by the runner's body weight (kg). Running kinematic variables were examined using Qualisys 3D Motion Capture and Visual 3D analysis. RRI occurrence was obtained via post-season questionnaires. Independent t-tests were used to determine mean differences between injured and non-injured runners for hip abductor muscle strength and selected running kinematics. Pearson correlation coefficients were calculated to examine relationships between hip muscle performance and kinematic variables.
End-of-the-season RRI information was gathered from 19 of the 20 participants. During the 2019-20 XC season, 57.9% (11 of 19) of the runners sustained an RRI. There were no significant differences between mean hip abductor normalized muscle strength (p=0.76) or mean normalized hip muscle strength asymmetry (p=0.18) of injured and non-injured runners during the XC season. Similarly, no significant differences were found between mean values of selected kinematic variables of runners who did and who did not report an RRI. Moderate relationships were found between hip abductor strength variables and right knee adduction at footstrike (r=0.50), maximum right knee adduction during stance (r=0.55), left supination at footstrike (r=0.48), right peak pronation during stance (r=-0.47), left supination at footstrike (r=0.51), and right peak pronation during stance (r=-0.54) (all p≤0.05).
Hip abduction muscle strength, hip abduction strength asymmetry, and selected running kinematic variables were not associated with elevated risk of RRI in female collegiate XC runners.
女子大学越野跑运动员与跑步相关的损伤（RRI）发生率较高。关于可能增加该人群RRI风险的潜在内在因素的研究报告有限。
研究女子大学越野跑运动员中RRI、髋部肌肉力量和下肢跑步运动学之间的关系。
前瞻性观察队列研究。
参与者包括来自南加州大学的20名女子美国国家大学体育协会（NCAA）大学越野跑运动员，她们参加了2019 - 2020学年的校际赛季。通过季前问卷收集人口统计学信息。在侧卧位开链位置使用等速测力法测量髋部肌肉力量，并通过跑步者的体重（千克）进行标准化。使用Qualisys 3D运动捕捉和Visual 3D分析来检查跑步运动学变量。通过季后问卷获取RRI的发生情况。使用独立t检验确定受伤和未受伤跑步者在髋外展肌力量和选定跑步运动学方面的平均差异。计算Pearson相关系数以检查髋部肌肉性能与运动学变量之间的关系。
20名参与者中的19名提供了赛季末RRI信息。在2019 - 2020越野赛季期间，57.9%（19名中的11名）的跑步者遭受了RRI。在越野赛季期间，受伤和未受伤跑步者的平均髋外展标准化肌肉力量（p = 0.76）或平均标准化髋部肌肉力量不对称性（p = 0.18）之间没有显著差异。同样，报告有RRI和未报告有RRI的跑步者在选定运动学变量的平均值之间也没有发现显著差异。发现髋外展力量变量与着地时右膝内收（r = 0.50）、支撑期最大右膝内收（r = 0.55）、着地时左足内翻（r = 0.48）、支撑期右足最大内旋（r = -0.47）、着地时左足内翻（r = 0.51）以及支撑期右足最大内旋（r = -0.54）之间存在中等程度的关系（所有p≤0.05）。
髋外展肌肉力量、髋外展力量不对称性和选定的跑步运动学变量与女子大学越野跑运动员RRI风险升高无关。
