Hegyi András, Sarcher Aurélie, Varenne Fabien, Mornet Alexis, Cadu Jean-Philippe, Carcreff Lena, Lacourpaille Lilian
Department of Kinesiology, Hungarian University of Sports Science, Budapest, Hungary.
Movement-Interactions-Performance, MIP, UR 4334, Nantes Université, Nantes, France.
J Hum Kinet. 2025 Jun 25;98:17-28. doi: 10.5114/jhk/194851. eCollection 2025 Jul.
An excessive pelvic tilt in the late swing phase of sprinting may be associated with an increased risk of hamstring injury. Nevertheless, research including female athletes is scarce. Furthermore, it is essential to validate simple on-field methods. This study consisted of two experiments. Experiment I assessed the validity of two 2-D video-based methods: i) the kick-back score calculated from thigh angles at the toe-off and the touchdown; and ii) the pelvic tilt estimated by a line connecting two markers on the pelvis. Twelve soccer players sprinted for 30 m, and 3-D motion capture data and 2-D sagittal plane video were recorded. Experiment II aimed to compare the above 2-D methods in recently injured (n = 7) and non-injured (n = 18) professional female soccer players. In Experiment I, no correlation was found between the kick-back score and the pelvic tilt assessed using 3-D motion capture (rho = -0.224, p = 0.242). Two-D camera-based estimation of the pelvic tilt correlated with the 3-D pelvic tilt (r = 0.89-0.94, < 0.001). In Experiment II, the kick-back score was not significantly different between groups (d = 0.11, p = 0.41). The pelvic tilt was higher in the previously injured than in non-injured players in the late swing phase (d = -0.79, p = 0.03). Our results suggest that the kick-back score is not associated with the pelvic tilt. Nevertheless, the estimation of the pelvic tilt in field settings is feasible through the tracking of two markers on the pelvis in the sagittal plane. Additionally, longitudinal studies are recommended to gain deeper understanding of the excessive pelvic tilt in previously injured female soccer players.
短跑摆动后期骨盆过度倾斜可能与腘绳肌损伤风险增加有关。然而，包括女性运动员在内的相关研究很少。此外，验证简单的现场方法至关重要。本研究包括两个实验。实验一评估了两种基于二维视频的方法的有效性：i）根据离地和着地时的大腿角度计算的后踢得分；ii）通过连接骨盆上两个标记的线估计的骨盆倾斜度。12名足球运动员进行30米短跑，并记录三维运动捕捉数据和二维矢状面视频。实验二旨在比较上述二维方法在近期受伤（n = 7）和未受伤（n = 18）的职业女子足球运动员中的情况。在实验一中，后踢得分与使用三维运动捕捉评估的骨盆倾斜度之间没有相关性（rho = -0.224，p = 0.242）。基于二维摄像机的骨盆倾斜度估计与三维骨盆倾斜度相关（r = 0.89 - 0.94，< 0.001）。在实验二中，两组之间的后踢得分没有显著差异（d = 0.11，p = 0.41）。在摆动后期，先前受伤的运动员的骨盆倾斜度高于未受伤的运动员（d = -0.79，p = 0.03）。我们的结果表明，后踢得分与骨盆倾斜度无关。然而，通过在矢状面跟踪骨盆上的两个标记，在现场环境中估计骨盆倾斜度是可行的。此外，建议进行纵向研究，以更深入地了解先前受伤的女子足球运动员的骨盆过度倾斜情况。
