Effect of hip and knee position on tensor fasciae latae elongation during stretching: An ultrasonic shear wave elastography study
Effect of hip and knee position on tensor fasciae latae elongation during stretching: An ultrasonic shear wave elastography study
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DOI：
10.1016/j.clinbiomech.2015.09.007
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发表时间：
2015-12-01
影响因子：
1.8
通讯作者：
Ichihashi, Noriaki
中科院分区：
文献类型：
--
作者：
Umehara, Jun;Ikezoe, Tome;Ichihashi, Noriaki
背景：阔筋膜张肌柔韧性降低是髂胫束综合征的一个病因。拉伸已被用于改善肌肉的柔韧性或紧张性。然而，没有研究调查的有效拉伸位置的阔筋膜张肌使用的指数，以量化肌肉在体内的伸长。本研究的目的是探讨髋关节旋转和膝关节角度对阔筋膜张肌伸长在体内使用超声剪切波elasticgraphy.Methods拉伸过程中的影响：20名健康男性参加了这项研究。利用超声剪切波弹性成像技术计算阔筋膜张肌的剪切弹性模量。拉伸进行了最大髋关节内收和最大髋关节伸展在12个不同的位置与三个髋关节旋转条件（中性，内部和外部旋转）和四个膝盖角度（0度，45度，90度，和135度）。膝关节角度的事后检验表明，90度和135度的剪切弹性模量显著大于0度和45度的剪切弹性模量。我们的研究结果表明，在髋关节内收和伸展的伸展位上增加髋关节旋转可能对阔筋膜张肌伸长的影响较小，并且以>90度的膝关节屈曲伸展可以有效地延长阔筋膜张肌。(C)2015爱思唯尔有限公司版权所有。
Background: Decreased flexibility of the tensor fasciae latae is one factor that causes iliotibial band syndrome. Stretching has been used to improve flexibility or tightness of the muscle. However, no studies have investigated the effective stretching position for the tensor fasciae latae using an index to quantify muscle elongation in vivo. The aim of this study was to investigate the effects of hip rotation and knee angle on tensor fasciae latae elongation during stretching in vivo using ultrasonic shear wave elastography.Methods: Twenty healthy men participated in this study. The shear elastic modulus of the tensor fasciae latae was calculated using ultrasonic shear wave elastography. Stretching was performed at maximal hip adduction and maximal hip extension in 12 different positions with three hip rotation conditions (neutral, internal, and external rotations) and four knee angles (0 degrees, 45 degrees, 90 degrees, and 135 degrees).Findings: Two-way analysis of variance showed a significant main effect for knee angle, but not for hip rotation. The post-hoc test for knee angle indicated that the shear elastic modulus at 90 degrees and 135 degrees were significantly greater than those at 0 degrees and 45 degrees.Interpretation: Our results suggest that adding hip rotation to the stretching position with hip adduction and extension may have less effect on tensor fasciae latae elongation, and that stretching at >90 degrees of knee flexion may effectively elongate the tensor fasciae latae. (C) 2015 Elsevier Ltd. All rights reserved.