쭈그림 운동 시 고관절 등척성 내전과 외전에 따른 대퇴사두근 활성도
Activity of the Quadriceps during Semisquat and Squat Exercises with Isometric Hip Adduction and Abduction in Young Healthy Persons
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Objective: To determine the effects of isometric hip adduction and abduction on the activity of vastus medialis obliquus (VMO) and vastus lateralis (VL) during semisquat and squat exercise. Method: Thirty healthy male subjects without history of knee pain were recruited. Subjects performed a traditional exercise combined with hip adduction and abduction during semisquat and squat exercise. A total of 3 repetitions lasting 6 seconds each were executed following two-minute intervals. The EMG signals were collected from VMO and VL of the dominant leg. The data were normalized to the maximal isometric voluntary contraction of VMO and VL at 90° of knee flexion using isokinetic dynamometer and analysed in terms of their RMS values.Results: The activity of both VMO and VL was significantly greater during both semisquat and squat exercise with hip adduction and abduction than without hip adduction and abduction. The VMO/VL ratio was significantly greater. The squat exercise produced significantly greater VMO and VL activity than the semisquat exercise, regardless of hip position. However, there were no significant differences in VMO/VL ratio between semisquat and squat exercise. Conclusion: Combining isometric hip adduction using theraband during semisquat exercise produced higher VMO/ VL ratio through more selective VMO activation and could be easy and effective rehabilitation program in patellofemoral pain syndrome.
Abstract
Objective: To determine the effects of isometric hip adduction and abduction on the activity of vastus medialis obliquus (VMO) and vastus lateralis (VL) during semisquat and squat exercise. Method: Thirty healthy male subjects without history of knee pain were recruited. Subjects performed a traditional exercise combined with hip adduction and abduction during semisquat and squat exercise. A total of 3 repetitions lasting 6 seconds each were executed following two-minute intervals. The EMG signals were collected from VMO and VL of the dominant leg. The data were normalized to the maximal isometric voluntary contraction of VMO and VL at 90° of knee flexion using isokinetic dynamometer and analysed in terms of their RMS values.Results: The activity of both VMO and VL was significantly greater during both semisquat and squat exercise with hip adduction and abduction than without hip adduction and abduction. The VMO/VL ratio was significantly greater. The squat exercise produced significantly greater VMO and VL activity than the semisquat exercise, regardless of hip position. However, there were no significant differences in VMO/VL ratio between semisquat and squat exercise. Conclusion: Combining isometric hip adduction using theraband during semisquat exercise produced higher VMO/ VL ratio through more selective VMO activation and could be easy and effective rehabilitation program in patellofemoral pain syndrome.
참고문헌 (22)
- Sczepanski T, "Effect of contraction type, angular velocity and arc of motion on VMO, VL EMG ratio", J Orthop Sports Phys Ther, 14, pp.256~262 (1991)
- Cerny K, "Vastus medialis oblique", vastus lateralis muscle activity ratio for selected exercises in persons with and without patellofemoral pain syndrome, 1995, pp.75, 672~683
- Wilk KE, "Principles of patellofemoral rehabilitation", Sports Med Arthrosc, 9, pp.325~336 (2001)
- Kim JH, "Rehabilitation medicine, 2nd ed", pp.577,466~578 (2002), Koonja
- Hungerford DS, "Biomechanics of the patellofemoral joint", Clin Orthop, 144, pp.9~15 (1979)
- Karst GM, "Onset timing of electromyographic activity in the vastus medialis oblique and vastus lateralis muscles in subjects with and without patellofemoral pain syndrome", Phys Ther, 75, pp.813~823 (1995)
- Host JV, "Patellofemoral dysfunction in tennis players, a dynamic problem", Clin Sports Med, 14, pp.177~203 (1995)
- Miller J, "Vastus medialis obliquus and vastus lateralis activity in patients with and without patellofemoral pain syndrome", J Sport Rehabil, 6, pp.1~10 (1997)
- Earl JE, "Activation of the VMO and VL during dynamic mini-squat exercises with and without isometric hip adduction", J Electromyogr Kinesiol, 11, pp.381~386 (2001)
- Coqueiro KR, "Analysis on the activation of the VMO and VLL muscles during semisquat exercises with and without hip adduction in individuals with patellofemoral pain syndrome", J Electromyogr Kinesiol, 15, pp.596~603 (2005)
- Rainoldi A, "A method for positioning electrodes during surface EMG recordings in lower limb muscles", J Neurosci Methods, 134, pp.37~43 (2004)
- Cho WS, "Sports injury around knee joint", J Korean Sports Med, 23, pp.24~29 (2005)
- Hanten W, "Exercise effect on electromyographic activity of the vastus medialis oblique and vastus lateralis muscles", Phys Ther, 70, pp.561~565 (1990)
- Tang SFT, "Vastus medialis obliquus and vastus lateralis activity in open and closed kinetic chain exercises in patients with patellofemoral pain syndrome. An electromyographic study", Arch Phys Med Rehabil, 82, pp.1441~1445 (2001)
- Hertel J, "Combinning isometric knee extension exercises with hip adduction or abduction does not increase Quadriceps EMG activity", Br J Sports Med, 38, pp.210~213 (2004)
- Bevilaqua-Grossi D, "The effect of hip abduction on the EMG activity of vastus medialis obliquus, vastus lateralis longus and vastus lateralis obliquus in healthy subjects", J Neuroeng Rehabil, 3, pp.3~13 (2006)
- Brownstein BA, "Quadriceps torque and integrated electromyography", J Orthop Sports Phys Ther, 6, pp.309~314 (1985)
- Winslow J, "Patellofemoral pain in female ballet dancers: correlation with iliotibial band tightness and tibial external rotation", J Orthop Sports Phys Ther, 22, pp.18~21 (1995)
- Souza DR, "Comparison of vastus medialis obliquus vastus lateralis muscle integrated electromyographic ratio between healthy subjects and patients with patellofemmoral pain", Phys Ther, 71, pp.310~320 (1991)
- Power CM, "Patellar kinetics Part I the influence of vastus muscle activity in subjects with and without patellofemoral pain", Phys Ther, 80, pp.956~964 (2000)
- Mathiassen SE, "Normalization of surface EMG amplitude from the upper trapezius muscle in ergonomic studies", J Electromyogr Kinesiol, 5, pp.197~226 (1995)
- De Luca CJ, "The use of surface electromyography in biomechanics", J Appl Biomech, 13, pp.135~163 (1997)