슬개대퇴 통증 증후군과 발목의 위치가 terminal knee extension 시 대퇴사두근의 근력과 근활성도에 미치는 영향 (Effects of PFPS and ankle position during terminal knee extension on isokinetic strength and EMG activity of quadriceps femoris muscle)
한국학술지에서 제공하는 국내 최고 수준의 학술 데이터베이스를 통해 다양한 논문과 학술지 정보를 만나보세요.
The purpose of this study was to examine the effects of three different ankle positions during terminal knee extension on isokinetic strength and electromyographic (EMG) activity of vastus medialis oblique (VMO) and vastus lateralis (VL) in ssireum players, with patellofemoral pain syndrome (PFPS: n=9) and without PFPS (non PFPS; NPFPS: n=9). Eighteen ssireum players were divided into PFPS group and NPFPS group. All subjects performed isokinetic strength test with terminal knee extension in three ankle positions, i.e. internal rotation 30°, neutral, and external rotation 30°. Isokinetic strength and EMG activities of VMO and VL were compared. Main results of the present study were as follows: 1) Peak torque, peak torque per body weight, total work, total work per body weight, and EMG activity of VMO and VL were tended to be lower in PFPS group than NPFPS group. 2) There was a significant position effect in both RMS (p=.001) and iEMG (p=.000) of VL. 3) EMG activity of VMO was tended to be lower than VL in both PFPS group and NPFPS group. It was concluded that performing terminal knee extension at either internal rotation or neutral positions would be more effective to enhance muscular activity and strength than performing it at external rotation position.
영어초록
The purpose of this study was to examine the effects of three different ankle positions during terminal knee extension on isokinetic strength and electromyographic (EMG) activity of vastus medialis oblique (VMO) and vastus lateralis (VL) in ssireum players, with patellofemoral pain syndrome (PFPS: n=9) and without PFPS (non PFPS; NPFPS: n=9). Eighteen ssireum players were divided into PFPS group and NPFPS group. All subjects performed isokinetic strength test with terminal knee extension in three ankle positions, i.e. internal rotation 30°, neutral, and external rotation 30°. Isokinetic strength and EMG activities of VMO and VL were compared. Main results of the present study were as follows: 1) Peak torque, peak torque per body weight, total work, total work per body weight, and EMG activity of VMO and VL were tended to be lower in PFPS group than NPFPS group. 2) There was a significant position effect in both RMS (p=.001) and iEMG (p=.000) of VL. 3) EMG activity of VMO was tended to be lower than VL in both PFPS group and NPFPS group. It was concluded that performing terminal knee extension at either internal rotation or neutral positions would be more effective to enhance muscular activity and strength than performing it at external rotation position.
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