The purpose of the study was to compare thickness of the transversus abdominis (TA) and obliquus internus (OI) muscles between athletes with and without longstanding adduction-related groin pain (LAGP). Forty two athletes with LAGP and 23 controls were included. Thickness of TA and OI were measured with ultrasound imaging on the right side of the body during rest. Relative muscle thickness (compared to rest) was measured during the active straight leg raise (ASLR) left and right, and during isometric hip adduction. TA resting thickness was significantly smaller in injured subjects with left-sided (4.0+/-0.82mm; P<0.001) or right-sided (4.3+/-0.64mm; P=0.015) groin complaints compared with controls (4.9+/-0.90mm). No significant differences between patients and controls in TA or OI relative thickness during the ASLR and isometric hip adduction were found (all cases P>/=0.15). In conclusion, TA resting thickness is smaller in athletes with LAGP and may thus be a risk factor for (recurrent) groin injury. This may have implications for therapy and prevention of LAGP.
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机译：该研究的目的是比较有和没有长期内收相关腹股沟痛（LAGP）的运动员之间的腹横肌（TA）和内斜肌（OI）的厚度。包括42名LAGP运动员和23名对照。在休息期间，通过超声在身体右侧测量TA和OI的厚度。在左，右主动直腿抬高（ASLR）以及等距髋关节内收过程中，测量相对肌肉厚度（与休息相比）。左侧腹股沟（4.0 +/- 0.82mm; P <0.001）或右侧腹股沟（4.3 +/- 0.64mm; P = 0.015）的受伤受试者的TA静息厚度显着小于对照组（4.9 + / -0.90mm）。在ASLR和等距髋关节内收期间，患者和对照组的TA或OI相对厚度之间无显着差异（所有病例P> / = 0.15）。总之，患有LAGP的运动员的TA休息厚度较小，因此可能是（反复）腹股沟损伤的危险因素。这可能对LAGP的治疗和预防有影响。
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