발목관절의각도가무릎관절폄근의근활성도에미치는영향
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1 1) 발목관절의각도가무릎관절폄근의근활성도에미치는영향 1 The Effects of Ankle Joint Angle on Knee Extensor Electromyographic Activity Sang-seok Yeo PT Jung-won Kwon PT Chung-sun Kim PT PhD 1 Department of Physical Therapy Graduate School of Rehabilitation Science Daegu University 1 Department of Physical Therapy Collage of Rehabilitation Science Daegu University <Abstract> Purpose The purpose of this study was to find the effect of ankle joint angle on knee extensor electromyographic activity following knee extension exercise Methods Ten male university students participated in the study The subjects performed isometric maximal voluntary knee extensor contractions (MVC) and knee extensor EMG activity measured in with three different ankle joint angle The EMG activity of rectus femoris(rf) vastus medialis(vm) vastus lateralis(vl) were measured using surface electromyography Results EMG activity of vastus lateralis following the change of ankle joint angle was shown statistically significant difference Conclusion Ankle plantar flexion position insrease EMG activity of vastus lateralis during knee extension exercise Key Words Ankle joint angle Knee extensor EMG (talocrural joint) (talus) (tibia) (talus) (fibula) 1 (hinge joint) 20 (dorsiflexion) 30 ~50 (plantar flexion) (Milner 1973) / (abduction/adduction) / (inversion/eversion) eangbul@hanmailnet / /
2 (external rotation) (Williams 1995) (flextion) (Stiehl 1991) (internal rotation) (extension) 130 ~140 (Nokin 1985) 5 ~10 ( 2001) (Sacroiliac joint) - (Eng 1993) femoris) (vastus medialis) (vastus lateralis) 4 (rectus femoris) (quadriceps (vastus intermedius) (femur) 7 ~10 3 ~5 (Lieb 1968) / 1984) (Olerud Berg (Signorile 1995) (Joseph 1995) (Blake 1981; Greenfield 1990) 1 D
3 18 10 (Hazel 2004) 2 EMG 90 0 RMS(root mean square) (MVC) %MVC (Mademli 2004; Morse 2005ab) (Electromyography EMG) ProComp InfinitiTM(Thought Technology Ltd Canada) 3 (Positive- Ground-Negative) (Triode surface electrode Thought Technology Ltd Canada) 20~500Hz 1024Hz 10 3 SPSS 140 (one-way ANOVA) (Tukey's Honestly Significant Difference) (long axis of the femur) 50 (Superior medial border of the patella) 5cm 12~ 15 (Superior lateral border of the patella) 15cm (Superior pole of the patella) (Anterior superior iliac spine) (Maximum Voluntary Isometric Contraction MVC) ± ± ±615 (Table 1) Table 1 General characteristics of subjects Subjects (n=10) Age(year) Height(cm) Weight(kg) 2519± ± ±615 10
4 Table 2 Comparison of EMG activity of each muscle following ankle joint angle SS df MS F-value P RF VM VL * *P<005 RF : Rectus Femoris VM : Vastus Medialis VL : Vastus Lateralis 2 90 (Table 3) 4 (p<05)(table 2) 3 (Table 4) Table 3 Comparison of EMG activity on rectus femoris ME SE P DF ~ DF ~ PF ~ PF P<005 ME : Mean Difference SE : Standard Error Table 4 Comparison of EMG activity on vastus medialis ME SE P DF ~ DF ~ PF ~ PF P<005 ME : Mean Difference SE : Standard Error
5 Table 5 Comparison of EMG activity on vastus lateralis ME SE P DF ~ DF ~ PF ~ PF * *P<005 ME : Mean Difference SE : Standard Error % (Table 5) ( 1986) 0 Arampatzis(2006) (subtalar joint) / (David 2003) (David 2003) Soderberg(1997) (gastrocnemius) (2004) ( ) (Hollinshead 1969) Joseph (1997)
6 0 90 Joseph (1997) Ninons (1997) 30 15% 60 25% (2006) ;10: ;8(2): ;12(1): ;16(3): Arampatzis A Karamanidis K Stafilidis S et al Effect of different ankle- and knee-joint positions on gastrocnemius medialis fascicle length and EMG activity during isometric plantar flexion J Biomech 2006;39(10): Blake RL Burns DP Colson JP Etiology of atraumatic medial knee pain J Am Podiatry Assoc 1971;71(10):580-3 David BJ Hollinshead's functional anatomy of the limbs and back 8th ed Seoul Hyun moon all rights reserved 2003:441-2 Eng JJ Pierrynowski MR Evaluation of soft foot orthotics in the treatment of patellofemoral pain syndrome Phys Ther 1993;73(2):62-9 Greenfield B Evaluation of overuse syndromes In: Dnatelli RThe Biomechanics of the foot and
7 ankle FA Davis Co 1990:162 Hazel MC Musculoskeletal assesment Joint range of motion and manual muscle strength 2nd ed Seoul Korea Yeong Mun Publishing Company 2004:328-9 Hollinshead WH The back & Limbs 2nd ed New York USA Hoeber Medical Division Harper& Row Publishers 1969: Joseph FS Denise K Arlette P et al The effect of knee and foot position on the electromyographical activity of the superficial quadriceps J Orthop Sports Phys Ther 1995;22(1):2-9 Joseph PM Daniel S Ronald VC Leg rotation and vastus medialis obilique/vastus lateralis electromyogram activity ratio during closed chain kinetic exercise prescribed for patellofemoral pain J Athl Train 1997;32(3): Lieb FJ Perry J Quadriceps function: An anatomical and mechanical study using amputated limbs J Bone Joint Surg Am 1968;50(8): Mademli L Arampatzis A Morey-Klapsing G et al Effect of ankle joint position and electrode placement on the estimation of the antagonistic moment during maximal plantarflexion J Electromyogr Kinesiol 2004;14(5):591-7 Milner M Dall D McConnell VA et al Angle diagrams in the assessment of locomotor function Studies on normal subjects for various speeds and some preliminary work on patients requiring total hip reconstruction (Charnley low-friction arthroplasty) S Afr Med J 1973;47(22):951-7 Morse CI Thom JM Mian OS et al Muscle strength volume and activation following 12-month resistance training in 70-year-old males Eur J Appl Physiol 2005;95(2-3): Morse CI Thom JM Reeves ND et al In vivo physiological cross-sectional area and specific force are reduced in the gastrocnemius of elderly men J Appl Physiol 2005;99(3): Nions JC Irrgang JJ Burdett R et al Electromyographic analysis of the squat performed in selfselected lower extremity neutral rotation and 30 degrees of lower extremity turn-out from the selfselected neutral position J Orthop Sports Phys Ther 1997;25(5): Nokin CC White DW Measurement of Joint Motion: A Guide to Goniometry Philadelphia FA DAvis 1985: Olerud C Berg P The variation of the Q angle with different positions of the foot Clin Orthop Relat Res 1984;(191):162-5 Signorile JF Kacsik D Perry A et al The effect of knee and foot position on the electromygraphical activity of the superficial quadriceps Phys Ther 1995;22(1):2-9 Soderberg GL Kinesiology 1st ed Baltimore USA Williams & Wilkins 1997:243-6 Stiehl J Biomechanics of the ankle In: Stiehl J(ed): Inman's Joints of the Ankle Williams & Wilkins Baltimore 1991: Williams PL Warwick R Gray's Anatomy 38th ed WB Saunders Philadelphia 1995:366-89
Int J Physiother. Vol 1(3), , August (2014) ISSN:
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