BACKGROUND Runners with iliotibial band syndrome display symptoms similar to chronic tendinopathy and distinct gait patterns compared to healthy controls. Although altered pain processing has been demonstrated in chronic tendinopathies, central pain processing and its relationship to motor control has not been measured in iliotibial band syndrome. The purpose of this study was to examine pain sensitivity, hip strength, and gait kinematics in runners with and without iliotibial band syndrome. METHODS Nine female runners with iliotibial band syndrome and eight healthy controls participated. Subjective pain was reported and pressure pain threshold measured at the bilateral foot, tibialis anterior, contralateral hand. Isometric hip strength was assessed. Three-dimensional joint angles were collected while running. Differences in pain and strength were determined using 1-way ANOVAs. Discrete hip and knee joint angles during stance phase were calculated and waveform analysis performed. FINDINGS Runners with iliotibial band syndrome exhibited bilaterally diminished pain at the foot (injured-limb: 1.54 (SD = 0.51); non-injured limb: 1.54 (SD = 0.55); control: 4.01 (SD = 2.30) kg, P < .001) and ipsilateral tibialis anterior (injured-limb: 2.33 (SD = 1.10); control: 6.13 (SD = 4.89) kg, P = .03). Hip strength was not different between groups. Runners with iliotibial band syndrome had greater hip adduction at touchdown, knee internal rotation during loading, and knee abduction and flexion at toe-off than controls. INTERPRETATION Runners with iliotibial band syndrome demonstrated expanded somatic pain sensitivity without hip strength differences, but concomitant with altered gait patterns. Bilateral pain symptoms and gait deviations exist in runners with iliotibial band syndrome even with unilateral symptoms, highlighting the importance of bilateral assessment.

中文翻译：

---

胫束带综合征对女性跑步者疼痛敏感性和步态运动学的影响：初步研究。

背景技术与健康对照组相比，患有胫束综合症的跑步者表现出类似于慢性肌腱病的症状，并且步态明显。尽管在慢性肌腱病中已证明疼痛处理改变，但是在胫束带综合征中尚未测量到中央疼痛处理及其与运动控制的关系。这项研究的目的是检查有无without胫束带综合症的跑步者的疼痛敏感性，髋部力量和步态运动学。方法九名患有胫束带综合征的女子赛跑运动员和八名健康对照者参加。据报告主观疼痛，并在双侧足，胫骨前，对侧手测量压力疼痛阈值。评估等距髋部力量。跑步时收集三维关节角。使用1-方差分析确定疼痛和强度差异。在站立阶段计算髋和膝关节的离散角度，并进行波形分析。结果患有胫束综合症的跑步者的双足疼痛减轻（双肢受伤：1.54（SD = 0.51）；四肢未受伤：1.54（SD = 0.55）；对照组：4.01（SD = 2.30）kg，P <。 001）和同侧胫前肌（受伤的肢体：2.33（SD = 1.10）;对照：6.13（SD = 4.89）kg，P = .03）。两组之间的髋部强度没有差异。患有oti胫束综合症的跑步者与对照组相比，着地时髋关节内收，负重过程中膝关节内部旋转，脚趾处膝盖外展和屈曲更大。解释患有oti胫束综合征的跑步者表现出更大的躯体疼痛敏感性，而髋关节力量无差异，但伴随着步态改变。伴有单侧症状的胫束综合征跑步者存在双侧疼痛症状和步态偏差，这突出了双侧评估的重要性。