Journal of Exercise Science & Fitness
Volume 9, Issue 1 , Pages 40-45, 2011

Peak Torque and IEMG Activity of Quadriceps Femoris Muscle at Three Different Knee Angles in a Collegiate Population

Department of Sports Medicine and Physiotherapy, Guru Nanak Dev University, Amritsar, Punjab, INDIA

Article Outline

The coordinated activities of the four heads of the quadriceps femoris muscle results in knee extension. It is still a matter of debate as to whether the different heads of the quadriceps can be activated differentially by the central nervous system at different joint angles. This study aimed to investigate the influence of different angles of knee joint on the activation level of the vastus medialis oblique (VMO), vastus lateralis (VL) and rectus femoris (RF) using electromyographic activity during maximal voluntary isometric contraction (MVIC) and occurrence of peak torque measurement. Forty healthy subjects (20 males, 20 females) participated in the study. The peak torque for the dominant leg was measured using HUR5340 leg extension/curl with simultaneous recording of MVIC of the VMO, VL and RF using surface electromyography (SEMG). Test angles were presented randomly in 30° increments from 30° to 90° of knee flexion. To get peak torque, each subject performed maximal contraction of 10 seconds at each test angle and the myoelectrical activity was recorded simultaneously. The results illustrated that peak torque occurred at 60° for the entire group, including males (F = 39.654, p < 0.001) and females (F = 32, p < 0.001). Significant difference was found in integrated electromyographic (IEMG) activity of the VMO at all the angles in males (F = 14.665, p < 0.001) and females (F = 22.40, p < 0.001), with maximum activity at 60° of knee flexion followed by 90° and then 30° of knee flexion. It was thus concluded that the myoelectrical activity of the VMO changes with change in peak torque at the different joint angles during MVIC in both sexes.

Keywords:  HUR , knee joint angle , MVIC , peak torque , SEMG

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References 

  1. Basmajian JU , Harden TP , Regenos EM . Integrated action of the four heads of the quadriceps femoris-an electromyographic study . Anat Rec . 1972;172:15–20
  2. Blazevich AJ , Gill ND , Zhou S . Intra- and intermuscular variation in human quadriceps femoris architecture assessed in vivo . J Anat . 2006;209:210–289
  3. Brownstein BA , Lamb RL , Mangine RE . Quadriceps torque and integrated electromyography . J Orthop Sports Phys Ther . 1985;6:309–314
  4. Clarke H , Elkins E , Martin G , Wakim K . Relationship between body position and the application of muscle power to movements of the joints . Arch Phys Med . 1950;31:81–89
  5. De Ruiter CJ , Hoddenbach JG , Huurnink A , De Haan A . Relative torque contribution of vastus medialis muscle at different knee angles . Acta Physiol . 2008;194:223–237
  6. Gordon AM , Huxley AF , Julian FJ . The variation in isometric tension with sarcomere length in vertebrate muscle fibres . J Physiol . 1966;184:170–192
  7. Hansen EA , Lee HD , Barrett K , Herzog W . The shape of the forceelbow angle relationship for maximal voluntary contraction and submaximal electrically induced contractions in human elbow flexor . J Biomech . 2003;36:1713–1718
  8. Henneman E , Somjen G , Carpenter DO . Functional significance of cell size in spinal motorneurons . J Neurophysiol . 1965;28:560–580
  9. Herzog W , Ter Keurs HEDJ . Determination of force-length relations of intact human gastrocnemius muscles . Clin Biomech . 1988;6:230–238
  10. Houtz S , Lebow M , Beyer F . Effect of posture on strength of the knee flexor and extensor muscles . J Appl Physiol . 1957;11:475–480
  11. Ismail HM , Ranatunga KW . Isometric contractions of normal and spastic human skeletal muscle . Muscle Nerve . 1978;62:595–604
  12. Knight KL , Martin JA , Londerdee BR . EMG comparison of quadriceps femoris activity during knee extensions and straight leg raises . Am J Phys Med . 1979;58:57–69
  13. Koo TK , Mak AF , Hung LK . In vivo determination of subject-specific musculotendon parameters: application to the prime elbow flexor in normal and hemiparetic subjects . Clin Biomec . 2002;17:390–399
  14. Leedham JS , Dowling JJ . Force-length, torque-angle and EMG-joint angle relationships of human in vivo biceps brachii . Eur J Appl Physiol Occup Physiol . 1995;70:421–426
  15. Lieb FJ , Perry J . Quadriceps function-an electromyographic study under isometric conditions . J Bone Joint Surg (Am) . 1971;53:749–758
  16. Lin HT , Hsu AT , Chang JH , Chien CS , Chang GL . Comparison of EMG activity between maximal manual muscle testing and cybex maximal isometric testing of the quadriceps femoris . J Formos Med Assoc . 2008;107:175–180
  17. Linnamo V , Strojink V , Komi PV . Maximal force during eccentric and isometric action at different elbow angles . Eur J Appl Physiol . 2006;96:672–678
  18. Matheson JW , Kernozek TW , Fater DC . Electromyographic activity and applied load during seated quadriceps exercises . Med Sci Sports Exerc . 2001;33:1713–1725
  19. Nakamura Y, Ohmichi H, Miyashita M (1983). Tension-EMG relationship during maximum voluntary contraction of the quadriceps. Presented at the IX Congress of the International Society of Biomechanics, Waterloo, Ontario: August 7, 1983.
  20. Ng AV , Agre JC , Hanson P , Harrington MS , Nagle FJ . Influence of muscle length and force on endurance and pressor responses to isometric exercise . J Appl Physiol . 1994;76:2561–2569
  21. Onishi H , Yagib R , Oyamac M , Akasakad K , Ihashie K , Handaf Y . EMG-angle relationship of the hamstring muscles during maximum knee flexion . J Electromyogr Kinesiol . 2002;12:306–399
  22. Pincivero DM , Coelho AJ , Campy RM . Knee extensor torque and quadriceps femoris EMG during perceptually guided isometric contractions . J Electromyogr Kinesiol . 2003;13:159–167
  23. Pincivero DM , Salfetnikov Y , Campy RM , Coelho AJ . Angle- and gender-specific quadriceps femoris muscle recruitment and knee extensor torque . J Biomech . 2004;37:1689–1697
  24. Rack PM , Westbury DR . The effects of length and stimulus rate on tension in the isometric cat soleus muscle . J Physiol . 1969;204:443–460
  25. Salzman A , Torburn L , Perry J . Contribution of rectus femoris and vasti to knee extension. An electromyographic study . Clin Orthop Rel Res . 1993;290:236–243
  26. Soderberg G , Cook T . An electromyographic analysis of quadriceps femoris muscle setting and straight leg raising . Phys Ther . 1983;63:1434–1438
  27. Suter E , Herzog W . Extent of muscle inhibition as a function of knee angle . J Electromyogr Kinesiol . 1997;7:123–130
  28. Ter Keurs HEDJ , Iwazumi T , Pollack GH . The sarcomere lengthtension relation in skeletal muscle . J Gen Physiol . 1978;72:565–592
  29. Welsch MA , Williams PA , Pollock ML . Quantification of full range-of-motion unilateral and bilateral knee flexion and extension torque ratios . Arch Phys Med Rehabil . 1998;79:971–978
  30. Williams H , Stutzman L . Strength variation through the range of joint motion . Phys Ther Rev . 1959;39:145–152
  31. Woods J , Bigland-Ritchie B . Linear and non-linear surface EMG/force relationship in human muscles . Am J Phys Med . 1983;62:299–387

PII: S1728-869X(11)60005-1

doi:10.1016/S1728-869X(11)60005-1

Journal of Exercise Science & Fitness
Volume 9, Issue 1 , Pages 40-45, 2011

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