Sanchez-Gomez Ruben, Carrión Álvaro Gómez, Ortuño Soriano Ismael, Sanz Wozniak Paola, Zaragoza García Ignacio, Waer Fatma Ben, Alexe Cristina Iona, Alexe Dan Iulian
Nursing Department, Faculty of Nursing, Physiotherapy and Podiatry, Universidad Complutense de Madrid, 28040 Madrid, Spain.
Instituto de Investigación Sanitaria Hospital Clínico San Carlos (IdISSC), 28040 Madrid, Spain.
J Funct Morphol Kinesiol. 2025 Jun 23;10(3):237. doi: 10.3390/jfmk10030237.
Iliotibial band syndrome (ITBS) through the tensor fascia latae (TFL) is a well-known pathology among runners whose etiology is not completely clear, nor is the effectiveness of plantar insoles for different types of feet known well enough for them to be considered a possible approach for this issue. to understand how foot type and foot orthotics may influence the electromyographic (EMG) activity of the TFL. A total of 41 healthy recreational runners (mean age 32.66 ± 3.51) were recruited for the present cross-sectional study, categorizing them as neutral (NEUg = 15), supinators (SUPg = 15), and pronators (PROg = 11) according to the foot postural index, over a period of 11 months. The EMG of the TFL was measured using a surface electromyograph device while they ran on a treadmill at a constant speed of 9 km/h for 3 min, randomly using supinating (SUP), pronating (PRO), or heel lift (TAL) insoles of 5 mm each one, compared to the baseline condition (SIN). The intraclass correlation coefficient (ICC) was performed to check the reproducibility of the tests, pairwise comparisons with Bonferroni adjustment were made, and to test the differences between measurements, the Friedman test was performed. : The Shapiro-Wilk test indicated a normal distribution of the sample ( > 0.05). Almost all obtained results showed a "perfect reproducibility" close to one; a significant statistical increase was observed in the mean EMG values from NEUg (87.58 ± 4.81 mV) to SUPg (97.17 ± 4.3 mV) ( < 0.05) during SIN+ basal condition. Additionally, there was a statistical reduction from SIN (87.58 ± 4.81 mV) vs. PRO (74.69 ± 3.77 mV) ( < 0.001) in NEUg and from SIN (97.17 ± 4.3 mV) vs. PRO (90.96 ± 4 mV) ( < 0.001) in SUPg. : The SUPg exhibited increased activation of TFL fibers compared to the NEUg, likely due to the biomechanical demands associated with a supinated foot type. In contrast, the use of PRO appeared to promote relaxation of the TFL fibers by inducing internal rotation of the lower limb. Based on these preliminary results from a cross-sectional study in a healthy population, it is recommended to assess foot type when addressing ITBS and to consider the use of PRO as a complementary therapeutic strategy alongside conventional treatments.
通过阔筋膜张肌（TFL）引发的髂胫束综合征（ITBS）在跑步者中是一种广为人知的病症，其病因尚不完全清楚，而且对于不同脚型的足底鞋垫的有效性也了解得不够充分，以至于无法将其视为解决该问题的一种可行方法。本研究旨在了解脚型和足部矫形器如何影响阔筋膜张肌的肌电图（EMG）活动。本横断面研究共招募了41名健康的休闲跑步者（平均年龄32.66±3.51岁），根据足姿势指数在11个月的时间内将他们分为中立型（NEUg = 15）、旋后型（SUPg = 15）和旋前型（PROg = 11）。在他们以9公里/小时的恒定速度在跑步机上跑步3分钟时，使用表面肌电图设备测量阔筋膜张肌的肌电图，与基线状态（SIN）相比，随机使用5毫米厚的旋后（SUP）、旋前（PRO）或足跟抬起（TAL）鞋垫。进行组内相关系数（ICC）以检查测试的可重复性，进行Bonferroni校正的成对比较，并进行Friedman检验以测试测量之间的差异。夏皮罗-威尔克检验表明样本呈正态分布（>0.05）。几乎所有获得的结果都显示出接近1的“完美可重复性”；在SIN + 基础条件下，观察到从NEUg（87.58±4.81毫伏）到SUPg（97.17±4.3毫伏）的平均肌电图值有显著的统计学增加（<0.05）。此外，在NEUg中，SIN（87.58±4.81毫伏）与PRO（74.69±3.77毫伏）相比有统计学下降（<0.001），在SUPg中，SIN（97.17±4.3毫伏）与PRO（90.96±4毫伏）相比有统计学下降（<0.001）。与NEUg相比，SUPg表现出阔筋膜张肌纤维的激活增加，这可能是由于旋后型脚型相关的生物力学需求。相比之下，使用PRO似乎通过诱导下肢内旋促进阔筋膜张肌纤维的放松。基于对健康人群横断面研究的这些初步结果，建议在处理ITBS时评估脚型，并考虑将使用PRO作为传统治疗之外的一种辅助治疗策略。
