Shiozawa Hiroyuki, Ohsawa Takashi, Tsushima Yoshito, Higuchi Tetsuya, Takagishi Kenji, Chikuda Hirotaka
Department of Orthopedic Surgery, Graduate School of Medicine and Faculty of Medicine, The University of Gunma, Gunma, Japan.
Department of Orthopedic Surgery, Graduate School of Medicine and Faculty of Medicine, The University of Gunma, Gunma, Japan.
J Orthop Sci. 2018 Mar;23(2):328-333. doi: 10.1016/j.jos.2017.11.017. Epub 2017 Dec 26.
Exercise therapy is one of the recognized treatment methods for knee osteoarthritis (KOA). One such exercise technique, straight leg raising (SLR), is widely known as a home exercise method for strengthening the quadriceps femoris muscle. However, whether this exercise truly strengthens the quadriceps is not known. The objective of the present study was to investigate which lower limb muscle is stimulated and shows increased activity with SLR.
A total of 14 lower limbs in seven healthy adult male volunteers (mean age: 31.3 ± 2.2 years) were investigated. Participants were asked to perform SLR and subsequently underwent FDG-PET/CT examination for evaluation of the muscles of the entire lower limb. The maximum standardized uptake value (SUVmax) of each muscle (iliacus, psoas major, gluteus maximus, gluteus medius, gluteus minimus, vastus medialis, vastus intermedius, vastus lateralis, rectus femoris, biceps femoris, semimembranosus, semitendinosus, adductor, sartorius, gracilis, tibialis anterior, tibialis posterior, soleus, medial head of gastrocnemius, and lateral head of gastrocnemius) was measured in four cross-sections: at the trunk, pelvis, thigh, and lower leg.
SUVmax was significantly greater in: iliacus and adductor compared to vastus medialis, vastus lateralis, biceps, semitendinosus, gracilis, tibialis anterior, and gastrocnemius; psoas major compared to all muscles except for gluteus minimus and adductor; gluteus minimus compared to all muscles except for iliacus, psoas major, gluteus medius, and adductor; and gluteus medius compared to semitendinosus and gracilis.
After SLR, SUVmax was significantly greater in iliacus, psoas major, gluteus minimus, gluteus medius, and adductor compared to some of the other muscles. Performing SLR increased glucose metabolism of the above muscles in particular, and this may have increased their activity levels.
运动疗法是公认的膝关节骨关节炎（KOA）治疗方法之一。其中一种运动技术，即直腿抬高（SLR），作为一种增强股四头肌的家庭锻炼方法广为人知。然而，这种运动是否真的能增强股四头肌尚不清楚。本研究的目的是调查SLR刺激并显示活动增加的是哪条下肢肌肉。
对7名健康成年男性志愿者（平均年龄：31.3±2.2岁）的14条下肢进行了研究。要求参与者进行SLR，随后接受FDG-PET/CT检查以评估整个下肢的肌肉。在四个横截面（躯干、骨盆、大腿和小腿）测量每块肌肉（髂肌、腰大肌、臀大肌、臀中肌、臀小肌、股内侧肌、股中间肌、股外侧肌、股直肌、股二头肌、半膜肌、半腱肌、内收肌、缝匠肌、股薄肌、胫骨前肌、胫骨后肌、比目鱼肌、腓肠肌内侧头和腓肠肌外侧头）的最大标准化摄取值（SUVmax）。
与股内侧肌、股外侧肌、股二头肌、半腱肌、股薄肌、胫骨前肌和腓肠肌相比，髂肌和内收肌的SUVmax显著更高；与除臀小肌和内收肌外的所有肌肉相比，腰大肌的SUVmax显著更高；与除髂肌、腰大肌、臀中肌和内收肌外的所有肌肉相比，臀小肌的SUVmax显著更高；与半腱肌和股薄肌相比，臀中肌的SUVmax显著更高。
SLR后，与其他一些肌肉相比，髂肌、腰大肌、臀小肌、臀中肌和内收肌的SUVmax显著更高。进行SLR尤其增加了上述肌肉的葡萄糖代谢，这可能提高了它们的活动水平。
