@misc{oai:tokyo-metro-u.repo.nii.ac.jp:00006213,
 author = {ヤマウチ, トモユキ and 山内, 智之},
 month = {Mar},
 note = {Quadriceps Setting(QS)において大腿四頭筋4筋の個別性は明らかにされていない。本研究の目的は、超音波Shear Wave Elastography(SWE)を用い、QSにおける大腿四頭筋の筋硬度を測定し、大腿四頭筋4筋の個別性を明らかにすることである。対象は健常男性14名の右下肢とし、対象者の平均年齢は20.8歳(19-22)であった。測定肢位は股関節55度屈曲位の長座位姿勢とした。運動課題は膝関節0度屈曲位で膝窩を支点とした膝関節伸展運動を実施し、10Nmの力を維持させた。筋硬度測定は、大腿四頭筋4筋に対して超音波診断装置(GE社製LOGIQ E9)のSWEモードを用い無作為に測定した。関心領域は腱膜や腱を避け、できる限り大きくmappingした。筋活動の指標は筋弛緩・収縮時の筋硬度差を求め正規化し、筋個別性を検討した。その結果、中間広筋は他の3筋に対し有意に筋硬度が高値であり、その他の筋間には有意差を認めなかった。膝関節0度屈曲位では、中間広筋の筋活動を考慮する必要性が示唆された。, The individuality activity of the quadriceps muscles during quadriceps setting has not been clarified. If the individual muscle activity becomes clear, then efficient quadriceps setting can be performed by biofeedback using EMS or ultrasound. The purpose of this study was to measure the muscle stiffness of the quadriceps muscle during quadriceps setting using ultrasound shear wave elastography (SWE) and to clarify the individual quadriceps muscle activity. The subjects included 14 healthy young men (average age 20.6, range 19-22 years). The subjects sat in a long sitting position with their hips flexed at 55 degrees, their knee flexed at 0 degrees, the forearm crossed over the chest, and the pelvis fixed with a belt. The muscle stiffness at relaxation and contraction of the rectus femoris (RF), vastus medialis (VM), vastus lateralis (VL), vastus intermedius (VI) was measured. For the measurement of muscle stiffness, the quadriceps muscles were measured randomly in the SWE mode of an ultrasound diagnostic apparatus (LOGIQ E9 manufactured by GE). The linear-type probe was used (9L 5.25 MHz). The index of muscle activity was defined as the difference in muscle stiffness between muscle relaxation and contraction. The results showed that the mean ± standard deviation of the statistically significant differences (p < 0.01) before and after contraction were 0.405 ± 0.261 for RF, 0.436 ± 0.262 for VM, 0.457 ± 0.260 for VL, 0.828 ± 0.230 for VI. The stiffness of VI was significantly higher than that of other muscles. There was no significant difference for stiffness between other muscles. Previous studies reported that the physiological cross-sectional area of VI is the largest of the quadriceps muscles, and VI is located along the long axis of the bone. This study demonstrated that quadriceps setting needs to primarily consider the muscle activity of VI., 首都大学東京, 2017-03-25, 修士（理学療法学）},
 title = {Quadriceps settingにおける大腿四頭筋筋活動の検討 : Shear Wave Elastographyを用いて},
 year = {2017}
}