Human Performance and Rehabilitation Laboratory, School of Health Sciences, University of Thessaly, 3rd Km Old National Road Lamia-Athens, GR-35132, Lamia, Greece.
J Bodyw Mov Ther. 2024 Oct;40:971-978. doi: 10.1016/j.jbmt.2024.07.007. Epub 2024 Jul 9.
Hip abductors eccentrically maintain leg alignment during weight-bearing exercises. Hip abductors' weakness may be a significant aspect to take into account in the conservative management of Patellofemoral Pain (PFP). The aim of the study was to compare hip abductors' eccentric strength and hip kinematics during two functional tests, in female subjects with PFP.
In a cross-sectional study using convenience sampling, isokinetic Isokinetic unilateral eccentric hip abductors' mean peak moment (MPM) at 60°/sec and Frontal Plane Projection Angle (FPPA) during Single-Leg Squat (SLS) and Single-Leg Landing (SLL) tests, were assessed in 17 asymptomatic individuals and 19 PFP patients.
The FPPA during SLL (p = 0.771) and SLS (p = 0.587), as well as the isokinetic values of the eccentric adductors' MPM at 60°/sec (p = 0.769), did not differ between the groups. The isokinetic values and the SLL (r = -0.009 to p = 0.970) and SLS (r = -0.002 to p = 0.993) in the PFP group and the control group (SLS r = 0.160 to p = 0.540) did not show any statistically significant relationships.
PFP and asymmetry in hip abduction strength are not substantially correlated. It is necessary to conduct more research to comprehend how these impairments interact and to find out if there are patient subgroups with PFP.
在负重运动中，髋关节外展肌进行离心收缩以维持腿部的对线。髋关节外展肌无力可能是髌股疼痛（PFP）保守治疗中需要考虑的重要方面。本研究的目的是比较 PFP 女性患者在两种功能性测试中髋关节外展肌的离心力量和髋关节运动学。
采用便利抽样的横断面研究，在 17 名无症状个体和 19 名 PFP 患者中，评估了单腿下蹲（SLS）和单腿落地（SLL）测试中髋关节外展肌的等速向心 60°/秒时的平均峰值力矩（MPM）和额状面投影角（FPPA）。
SLL 时的 FPPA（p=0.771）和 SLS 时的 FPPA（p=0.587），以及 60°/秒时的外展肌离心 MPM 的等速值（p=0.769），两组之间没有差异。PFP 组和对照组的等速值与 SLL（r=-0.009 至 p=0.970）和 SLS（r=-0.002 至 p=0.993）以及 SLS（r=0.160 至 p=0.540）均无统计学显著相关性。
PFP 和髋关节外展力量的不对称性没有实质性的相关性。有必要进行更多的研究，以了解这些损伤如何相互作用，并确定是否存在 PFP 患者的亚组。
