Relationship between iliopsoas muscle thickness and hip angle during squats in different pelvic positions.
Relationship between iliopsoas muscle thickness and hip angle during squats in different pelvic positions.
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DOI：
10.1589/jpts.33.351
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发表时间：
2021-04
影响因子：
--
通讯作者：
Hara J
中科院分区：
文献类型：
--
作者：
Miyachi R;Deguchi M;Nishi Y;Yonekura S;Hara J
[目的]探讨不同骨盆位下蹲时髂腰肌厚度、髋角和下肢关节力矩变化的关系，为髋优势下蹲运动提供参考。[对象和方法] 7名健康成年男性。测量任务包括在三个位置下蹲60度膝关节屈曲：前，中立，后骨盆倾斜位置。使用超声测量腹股沟区中心的髂腰肌厚度。使用三维运动分析系统测量关节角度和关节力矩。[结果]不同骨盆位的骨盆角差异无统计学意义。骨盆前倾位和中立位的髋角差异显著高于后倾位。仅骨盆前倾位与髂腰肌厚度和髋角差呈显著正相关。[结论]中立位和骨盆后倾位下蹲与髋关节角度和髂腰肌厚度变化无关，而骨盆前倾位下蹲与髂腰肌厚度和髋关节屈曲角度变化相关。我们的研究结果表明，髂腰肌的激活可能是必要的，以促进髋占主导地位的蹲。
[Purpose] This study aimed to investigate the relationships among the changes in iliopsoas muscle thickness, hip angle, and lower limb joint moment during squatting in different pelvic positions to help in performing hip-dominant squatting exercises. [Participants and Methods] The participants were seven healthy adult males. The measurement task consisted of squatting with 60 degrees of knee flexion in three positions: the anterior, neutral, and posterior pelvic tilt positions. The iliopsoas muscle thickness was measured in the center of the inguinal region using ultrasonography. A three-dimensional motion analysis system was used to measure the joint angles and joint moments. [Results] There were no significant differences in pelvic angles between the pelvic positions. The hip angle differences were significantly higher in the anterior and neutral pelvic tilt positions compared to those in the posterior tilt position. Only the anterior pelvic tilt position had a significantly positive correlation with iliopsoas muscle thickness and hip angle differences. [Conclusion] Squatting in the neutral or posterior pelvic tilt position was not associated with hip angle and iliopsoas muscle thickness changes, whereas squatting in an anterior pelvic tilt position was associated with changes in the iliopsoas muscle thickness and hip flexion angle. Our findings suggest that activation of the iliopsoas muscle might be necessary to promote hip-dominant squatting.