Lee Sangyong, Choi Yoon-Hee, Kim Janggon
Department of Physical Therapy, U1 University, Republic of Korea.
Department of Physical Therapy, Graduate School DeaJeon University, Republic of Korea.
J Phys Ther Sci. 2017 Jun;29(6):1045-1047. doi: 10.1589/jpts.29.1045. Epub 2017 Jun 7.
[Purpose] The purpose of this study was to identify the effects of changes in support and inclined boards on lower-extremity muscle activity. [Subjects and Methods] The study subjects were 15 healthy adult males. Aero-Step equipment was used as an unstable support, and an inclined board was used to maintain angles of 0° and 20°. Electromyography was employed to analyze lower-extremity muscle activity. [Results] The vastus lateralis, vastus medialis, rectus femoris, gastrocnemius, soleus, and tibialis anterior muscles showed significant differences according to changes in the support and inclined board. In post-hoc tests the vastus lateralis, vastus medialis, and rectus femoris muscles showed significantly increased activity when exercises were performed on the unstable inclined board (20°) than the stable support (0°), unstable support (0°), or stable inclined board (20°). The gastrocnemius, soleus, and tibialis anterior muscles showed significantly increased activity when exercises were performed on the unstable support (0°), stable inclined board (20°), or unstable inclined board (20°) than on the stable support (0°). [Conclusion] An unstable support and increased slope of the inclined board may increase lower-extremity muscle activity.
[目的]本研究旨在确定支撑和倾斜板变化对下肢肌肉活动的影响。[对象与方法]研究对象为15名健康成年男性。使用Aero-Step设备作为不稳定支撑，并使用倾斜板维持0°和20°的角度。采用肌电图分析下肢肌肉活动。[结果]股外侧肌、股内侧肌、股直肌、腓肠肌、比目鱼肌和胫骨前肌根据支撑和倾斜板的变化显示出显著差异。在事后检验中，与稳定支撑（0°）、不稳定支撑（0°）或稳定倾斜板（20°）相比，在不稳定倾斜板（20°）上进行运动时，股外侧肌、股内侧肌和股直肌的活动显著增加。与稳定支撑（0°）相比，在不稳定支撑（0°）、稳定倾斜板（20°）或不稳定倾斜板（20°）上进行运动时，腓肠肌、比目鱼肌和胫骨前肌的活动显著增加。[结论]不稳定支撑和倾斜板坡度增加可能会增加下肢肌肉活动。
