Messier S P, Davis S E, Curl W W, Lowery R B, Pack R J
J. B. Snow Biomechanics Laboratory, Department of Health and Sport Science, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, NC 27109.
Med Sci Sports Exerc. 1991 Sep;23(9):1008-15.
The purpose of this study was to extend our knowledge of running related injuries by determining whether relationships exist between selected anthropometric, biomechanical, muscular strength and endurance, and training variables and runners afflicted with patellofemoral pain (PFP). Specifically, the objectives of this study were to examine differences in selected measures between a non-injured control group (C) of runners (N = 20) and a group of injured runners (INJ) diagnosed by an orthopedic surgeon as having PFP (N = 16). High speed photography, a force platform, and isokinetic dynamometry were used to determine rearfoot motion, ground reaction forces, and knee muscular strength and endurance. Stepwise discriminant function analyses were performed on the anthropometric, biomechanical, and muscular strength and endurance variables. Q angle was a significant discriminator (P less than 0.01) between the INJ and C groups. The muscular endurance data revealed several significant discriminators with the INJ subjects being weaker in knee extension endurance. Kinetic analysis revealed several significant discriminators whereas rearfoot movement variables were not good discriminators between the groups. The training data revealed that the INJ group ran significantly less (P less than 0.01) miles.wk-1 than the C group. Our results suggest that Q angle is a strong discriminator between runners afflicted with PFP and non-injured runners. In addition, several muscular endurance and kinetic variables may also be important components of the etiology of PFP.
本研究的目的是通过确定选定的人体测量学、生物力学、肌肉力量和耐力以及训练变量与患有髌股疼痛（PFP）的跑步者之间是否存在关系，来扩展我们对跑步相关损伤的认识。具体而言，本研究的目标是检查一组由骨科医生诊断为患有PFP的受伤跑步者（INJ，N = 16）与一组未受伤的对照跑步者（C，N = 20）在选定测量指标上的差异。使用高速摄影、测力平台和等速测力法来确定后足运动、地面反作用力以及膝关节肌肉力量和耐力。对人体测量学、生物力学以及肌肉力量和耐力变量进行逐步判别函数分析。Q角是INJ组和C组之间的一个显著判别指标（P < 0.01）。肌肉耐力数据显示了几个显著的判别指标，INJ组受试者的膝关节伸展耐力较弱。动力学分析显示了几个显著的判别指标，而后足运动变量在两组之间不是很好的判别指标。训练数据显示，INJ组每周跑步的英里数（P < 0.01）明显少于C组。我们的结果表明，Q角是患有PFP的跑步者与未受伤跑步者之间的一个强有力的判别指标。此外，几个肌肉耐力和动力学变量也可能是PFP病因的重要组成部分。
