عنوان مقاله [English]
Background and Aim: Although the biomechanical effects of insole on optimization of movement patterns, especially in the lower limbs in rehabilitation sciences, have been documented, the effect of applying it in modifying sports basic movement patterns is not well-known. The aim of present study was to investigate the effect of three foot insoles (rigid, semi-rigid, and soft) on electromyography activity ratio of VMO and VL muscles.
Materials and Methods: A total of 13 male participants took part in the present semi-experimental study. Electromyography activities of Vastus Medialis Obliqe (VMO) and Vastus Lateralis (VL) muscles were recorded and VMO/VL ratio was compared in four conditions: wearing only shoes, soft-sole, semi-sole, and rigid-sole during one-leg drop jump. ANOVA with Repeated measures test was used for data analyses (p<0.05).
Results: The VMO muscle activation in soft-sole condition significantly increased in comparison with semi-rigid condition in the eccentric phase (P<0.05). There was a significant increase in electromyography activation for Vastus lateralis muscle in soft-sole condition compared to non-sole and rigid-sole in the eccentric phase (P<0.05). Also, there was no significant difference observed for VMO and VL activation in conditions during concentric and pre-activation phases. Finally, VMO/VL activation ratio in rigid-sole significantly increased in comparison with semi-sole in the eccentric phase.
Conclusion: Considering the influence of rigid insole on increasing the VMO/VL ratio during the execution of drop jump task, it seems that using rigid insole may be useful in improving and expediting individuals' rehabilitation with imbalance problems between VMO and VL muscles during jumping tasks.
10. Sheehy P, Burdett R, Irrgang J, VanSwearingen J. An electromyographic study of vastus medialis oblique and vastus lateralis activity while ascending and descending steps. Journal of Orthopaedic and Sports Physical Therapy. 1998;27:423-9.##
11. Liaw S. A surface electromyographic study on the activation of vastus medialis oblique and vastus lateralis in different foot positions during step-up. Physiotherapy Singapore. 2000;31:4-9.##
12. Livecchi N, Armstrong C, Cordova M, Merrick M, Rankin J. Vastus laterialis and vastus medialis obliques activity during a straight leg raise and knee extension with hip rotation. Journal of Sports Rehabilitation. 2002;11:120-6.##
13. Miller J, Sedory D, Croce R. Leg rotation and vastus medialis oblique/vastus lateralis electromyogram activity ratio during closed chain kinetic exercises prescribed for patellofemoral pain. Journal of Athletic Training. 1997;32:216-20.##
14. Sykes K, Wong Y. Electrical activity of vastus medialis oblique muscle in straight leg raise exercise with different angle of hip rotation. Physiotherapy. 2003;89:423-30.##
15. Earl J, Schmitz R, Arnold B. Activation of the VMO and VL during dynamic mini-squat exercises with and without isometric hip adduction. Journal of Electromyography and Kinesiology. 2001;11:381-6.##
16. Hodges P, Richardson C. The influence of isometric hip adduction on quadriceps femoris activity. Scandinavian Journal of Rehabilitation and Medicine. 1993;25:57-62.##
17. Gu Y, Lu Y, Mei Q, Li J, Ren J. Effects of different unstable sole construction on kinematics and muscle activity of lower limb. Human Movement Science. 2014;36:46-57.##
18. Eslami M, Begon M, Hinse S, Sadeghi H, Popov P, Allard P. Effect of foot orthoses on magnitude and timing of rearfoot and tibial motions, ground reaction force and knee moment during running. Journal of Science and Medicine in Sport. 2009;12:679-84.##
19. D. Myer G, R. Ford K, D. Barber Foss K, Goodman A, Ceasar A, Rauh MJ, et al. The incidence and potential pathomechanics of patellofemoral pain in female athletes. Clinical Biomechanics. 2010;25:700-7.##
20. Zifchock R, Davis I. A comparison of semi-custom and custom foot orthotic devices in high- and low-arched individuals during walking. Clinical Biomechanics. 2008;23:1287-93.##
21. C. Boling M, A. Padua D, W. Marshall S, Guskiewicz K, Pyne S, Beutler A. A Prospective Investigation of Biomechanical Risk Factors for Patellofemoral Pain Syndrome. Am J Sports Med. 2009;37(11):2108-16.##
22. Tiberio D. The effect of excessive subtalar joint pronation on patellofemoral mechanics: a theoretical model. J Orthop Sports Phys Ther. 1987;9:160-5.##
23. Murley G, Bird A. The effect of three levels of orthotic wedging on the surface electromyographic activity of selected lower limb muscles during gait. Clinical Biomechanics. 2006;21:1074-80.##
24. Murley G, Landorf K, Menz H. Do foot orthoses change lower limb muscle activity in flat-arched feet towards a pattern observed in normal-arched feet? Clinical Biomechanics. 2010;25:728-36.##
25. Chen Y, SZ L, Huang C, Su F. Effects of foot orthoses on gait patterns of flat feet patients. Clinical Biomechanics. 2010;25:265-70.##
26. Nigg BM, Stefanyshyn D, Cole G, Stergiou P, Miller J. The effect of material characteristics of shoe soles on muscle activation and energy aspects during running. Journal of Biomechanics. 2003;36:569-75.##
27. Schmid S, Moffat M, M. Gutierrez G. Effect of knee joint cooling on the electromyographic activity of lower extremity muscles during a plyometric exercise. Journal of Electromyography and Kinesiology. 2010;20:1075-81.##
28. Winter DA, Yack HJ. EMG profiles during normal human walking: stride – to – stride and inter – subject variability. Electroencephalography and clinical neurophysiology. 1987:67.##
29. Hermens HJ, Freriks B, Disselhorst C, Rau G. Development of recommendations for sEMG sensor placement procedures. Journal of Electromyography and Kinesiology. 2000;10:361-74.##
30. Felson D, Gross K, Nevitt M, Yang M, Lane N, Torner J, et al. The effects of impaired joint position sense on the development and progression of pain and structural damage in knee osteoarthritis. Arthritis Rheum. 2009;61(8):1070-6.##
31. Hargrave M, Carcia C, Gansneder B, Shultz S. Subtalar pronation does not influence impact forces or rate of loading during a single-leg landing. Journal of Athletic Training. 2003;38(1):18.##
32. Viitasalo JT, Salo A, Lahtinen J. Neuromuscular functioning of athletes and nonathletes in the drop jump. Eur J Appl Physiol. 1998;78(5):432-40.##
33. Mahaki M, Shojaeddin S, Memar R, K. Nazji M. The Comparsion of the Electromyography of Leg Muscles and Peak Vertical Ground Reaction Forces during Single Leg Drop Landing between Men with Genu Varum Deformity and Normal Knee. Sport Medicine. 2012(9):87-106.##
34. Murley G, Landorf K, Menz H, Bird A. Effect of foot posture, foot orthoses and footwear on lower limb muscle activity during walking and running: a systematic review. Gait Posture. 2009;29(2):172-87.##
35. Esmaeili H. Longitudinal effects of foot orthotics on changes in muscular activity pattern in patients with pes planus during walking. hamedan: Bu-Ali SinaUniversity; 2011.##
36. Nicolopoulos C, Scott B, Giannoudis P. Biomechanical basis of foot orthotic prescription. Journal of Foot and Ankle. 2000;14:464-9.##