Comparison of the Electromyographic Changes in the Vastus Medialis Oblique and Vastus Lateralis Muscles According to the Knee Joint Angle During Squat Exercise Using a Gym Ball
2
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Background: Squatting is one of the best functional exercises to strengthen the quadriceps muscle in independent gait and activities of daily living. Although the use of a gym ball during squat exercise is the most common way of strengthening the vastus medialis oblique (VMO) muscle, published data on this subject are limited. Objects: The purpose of this study was to compare the sequential muscle activation of the VMO and vastus lateralis (VL) muscles during squat exercise using a gym ball at different knee flexion angles. Methods: Forty healthy adults were randomly divided into experimental (squat exercise using a gym ball) and control (squat exercise alone) groups, in which squats were performed at 45° and 90° knee flexion. Electromyographic (EMG) activity data were collected over 10 seconds under the 2 angles of knee flexion (45° and 90°). Results: There was significant group and time interaction effect for VMO and VL muscle activation at 45° knee flexion. This was similarly demonstrated at 90° knee flexion. No significant group main effect and time main effect for VMO and VL muscle activation were noted at 45° knee flexion, respectively. In contrast, there was significant group main effect and time main effect for VMO and VL muscle activation at 90° knee flexion. These significant differences were demonstrated through two-way analysis of variance over repeated measurements, suggesting that the EMG activity of the VMO muscle during squatting with a gym ball showed remarkable improvement compared to that of the VL muscle. Conclusion: This research suggests that squat exercise using a gym ball may be more beneficial in improving the activity of VMO than of the VL muscle at both 45° and 90° of knee flexion, respectively. We highly recommend squat exercises with a gym ball for selective strengthening of the VMO muscle in knee rehabilitation.
Abstract
Background: Squatting is one of the best functional exercises to strengthen the quadriceps muscle in independent gait and activities of daily living. Although the use of a gym ball during squat exercise is the most common way of strengthening the vastus medialis oblique (VMO) muscle, published data on this subject are limited. Objects: The purpose of this study was to compare the sequential muscle activation of the VMO and vastus lateralis (VL) muscles during squat exercise using a gym ball at different knee flexion angles. Methods: Forty healthy adults were randomly divided into experimental (squat exercise using a gym ball) and control (squat exercise alone) groups, in which squats were performed at 45° and 90° knee flexion. Electromyographic (EMG) activity data were collected over 10 seconds under the 2 angles of knee flexion (45° and 90°). Results: There was significant group and time interaction effect for VMO and VL muscle activation at 45° knee flexion. This was similarly demonstrated at 90° knee flexion. No significant group main effect and time main effect for VMO and VL muscle activation were noted at 45° knee flexion, respectively. In contrast, there was significant group main effect and time main effect for VMO and VL muscle activation at 90° knee flexion. These significant differences were demonstrated through two-way analysis of variance over repeated measurements, suggesting that the EMG activity of the VMO muscle during squatting with a gym ball showed remarkable improvement compared to that of the VL muscle. Conclusion: This research suggests that squat exercise using a gym ball may be more beneficial in improving the activity of VMO than of the VL muscle at both 45° and 90° of knee flexion, respectively. We highly recommend squat exercises with a gym ball for selective strengthening of the VMO muscle in knee rehabilitation.
참고문헌 (17)
- Rodrigo R. Aspe, "Electromyographic and Kinetic Comparison of the Back Squat and Overhead Squat", Journal of Strength and Conditioning Research, 28(10), pp.2827~2836 (2014), Ovid Technologies (Wolters Kluwer Health)[DOI]
- Christian J. Barton, "Gluteal muscle activation during the isometric phase of squatting exercises with and without a Swiss ball", Physical Therapy in Sport, 15(1), pp.39~46 (2014), Elsevier BV[DOI]
- Boling MC, "Outcomes of a weight-bearing rehabilitation program for patients diagnosed with patellofemoral pain syndrome", Arch Phys Med Rehabil, 87(11), pp.1428~1435 (2006)
- Cowan SM, "Delayed onset of electromyographic activity of vastus medialis obliquus relative to vastus lateralis in subjects with patellofemoral pain syndrome", Arch Phys Med Rehabil, 82(2), pp.183~189 (2001)
- Cram JR, "Introduction to Surface Electromyography", pp.408~ (1998), Aspen Publishers
- Dionisio VC, "Kinematic, kinetic and EMG patterns during downward squatting", J Electromyogr Kinesiol, 18(1), pp.134~143 (2008)
- Gefen A, "Analysis of muscular fatigue and foot stability during high-heeled gait", Gait Posture, 15(1), pp.56~63 (2002)
- Gilleard W, "The effect of patellar taping on the onset of vastus medialis obliquus and vastus lateralis muscle activity in persons with patellofemoral pain", Phys Ther, 78(1), pp.25~32 (1998)
- Sian E Irish, "The Effect of Closed-Kinetic Chain Exercises and Open-Kinetic Chain Exercise on the Muscle Activity of Vastus Medialis Oblique and Vastus Lateralis", Journal of Strength and Conditioning Research, 24(5), pp.1256~1262 (2010), Ovid Technologies (Wolters Kluwer Health)[DOI]
- Kendall FP, "Muscle: Testing and function, with posture and pain", pp.317~330 (2005), Lippincott Williams &Wilkins
- 김병조, "벽 미끄러짐 쪼그려 앉기 방법에 따른 넙다리네갈래근의 근활성도 비교", 대한물리의학회지, 7(4), pp.541~550 (2012), 대한물리의학회
- 고은경, "쪼그려 앉기(Leg Squat) 운동 시 등척성 고관절 내ㆍ외전이 내ㆍ외측광근의 근 활성도에 미치는 영향", 한국운동역학회지, 21(3), pp.361~368 (2011), 한국운동역학회
- 오태영, "짐볼과 벽면을 이용한 스쿼트 운동이하지근 활성도에 미치는 영향", 대한물리의학회지, 8(4), pp.647~653 (2013), 대한물리의학회
- Paoli A, "The effect of stance width on the electromyographical activity of eight superficial thigh muscles during back squat with different bar loads", J Strength Cond Res, 23(1), pp.246~250 (2009)
- 박성진, "무릎 관절 각도에 따른 스쿼트 운동 수행 시 하지 근의 근전도 비교 분석", 한국사회체육학회지, (53), pp.879~887 (2013), 한국사회체육학회
- Brad J Schoenfeld, "Squatting Kinematics and Kinetics and Their Application to Exercise Performance", Journal of Strength and Conditioning Research, 24(12), pp.3497~3506 (2010), Ovid Technologies (Wolters Kluwer Health)[DOI]
- Sheehy P, "An electromyographic study of vastus medialis oblique and vastus lateralis activity while ascending and descending steps", J Orthop Sports Phys Ther, 27(6), pp.423~429 (1998)