Effects of Energy System Contribution on Isokinetic Muscle Strength in Various Sport Events Athletes

무산소, 유산소 운동종목별 엘리트선수의 등속성 근기능에 미치는 영향

  • Kwon, Hyeong-Tae (Center For Sports Science in Incheon, Incheon Sports Council) ;
  • Kim, Ki-Hoon (Department of sports training, Ulsan College)
  • 권형태 (인천광역시체육회 인천스포츠과학센터) ;
  • 김기훈 (울산과학대학교 스포츠지도학과)
  • Received : 2018.07.09
  • Accepted : 2018.10.05
  • Published : 2018.10.31


This study was conducted to compare the muscle strength, muscle power, and H/Q ratio according to energy system contribution in athletes participating in various sports. Subjects of the study were assigned into an Anaerobic Exercise Group (AEG, n=60; Short-Distance, Weight Lifting, Jumping, Throwing, Bowling, Golf) and an Endurance Exercise Group (EEG, n=60; Modern Pentathlon, Field Hockey, Handball, Cycle, Boxing, Rowing) groups. Isokinetic peak torque/body weight% and flexor/extensor ratio at 60, 180 deg/sec of knee extension and flexion were measured using an cybex 770. Data analysis was conducted using an independent t-test and one-way ANOVA. Based on the results of this study, there was higher extension, flexion strength and flexion power in the AEG than the EEG (p<0.05). We also confirmed higher muscle strength and muscle power in short distance and jumping athletes than other athletes participating in other events (p<0.05). However, there was no significant difference within the endurance exercise group. The HS ratio was within a stable range of 50% to 60% in all events. Collectively, the outcomes of this study indicate that routine physiological and performance testing can provide measurable benefits for elite athletes and their coaches.


Energy System Contribution;Isokinetic;Muscle Strength;Muscle power;H/Q ratio


  1. P. Schons, G. Fischer, R. G. da Rosa, G. P. Berriel, L. A. Peyre-Tartaruga, "CORRELATIONS BETWEEN THE STRENGTH OF KNEE EXTENSOR AND FLEXOR MUSCLES AND JUMP PERFORMANCE IN VOLLEYBALL PLAYERS: A REVIEW", Journal of Physical Education, Vol.29, Article ID e2926, 2018 DOI:
  2. B. Requena, J. J. Gonzalez-Badillo, E. S. S. de Villareal, J. Ereline, I. Garcia, H. Gapeyeva, M. Paasuke, "Functional Performance, Maximal Strength, and Power Characteristics in Isometric and Dynamic Actions of Lower Extremities in Soccer Players", Journal of Strength and Conditioning Research, Vol.23, No.5, pp.1391-1401, 2009. DOI:
  3. H. J. Hislop, J. Perrine, "The Isokinetic Concept of Exercise", Physical Therapy, Vol.47, No.1, pp.114-117, 1967. DOI:
  4. H. G. Thistle, H. J. Hislop, M. Moffroid, E. W. Lowman, "Isokinetic contraction: a new concept of resistive exercise", Arch. of Physical Med. & Rehabilitation, Vol.48, No.6, pp.279-281, 1967.
  5. J. M. Rosene, T. D. Fogarty, B. L. Mahaffey, "Isokinetic Hamstrings:Quadriceps Ratios in Intercollegiate Athletes", Journal of Athletic Training, Vol.36, No.4, pp.378-383, 2001.
  6. M. Fillyaw, T. Bevins, L. Fernandez, "Importance of Correcting Isokinetic Peak Torque for the Effect of Gravity when Calculating Knee Flexor to Extensor Muscle Ratios", Physical Therapy, Vol.66, No.1, pp.23-29, 1986. DOI:
  7. K. Perrine, "Differential aspects of conceptual processing in the category test and wisconsin card sorting test", Journal of Clinical and Experimental Neuropsychology, Vol.15, No.4, pp.461-473, 1993. DOI:
  8. P. Aagaard, E. B. Simonsen, M. Trolle, J. Bangsbo, K. Klausen, "Isokinetic hamstring/quadriceps strength ratio: influence from joint angular velocity, gravity correction and contraction mode", Acta Physiologica Scandinavica, Vol.154, No.4, pp.421-427, 1995. DOI:
  9. R. C. Li, N. Maffulli, Y. C. Hsu, K. M. Chan, "Isokinetic strength of the quadriceps and hamstrings and functional ability of anterior cruciate deficient knees in recreational athletes", British Journal of Sports Medicine, Vol.30, No.2, pp.161-164, 1996. DOI:
  10. P. Aagaard, E. B. Simonsen, N. Beyer, B. Larsson, P. Magnusson, M. Kjaer, "Isokinetic Muscle Strength and Capacity for Muscular Knee Joint Stabilization in Elite Sailors", International Journal of Sports Medicine, Vol.18, No.7, pp.521-525, 1997. DOI:
  11. H. Gur, B. Akova, Z. Punduk, S. Kucukoglu, "Effects of age on the reciprocal peak torque ratios during knee muscle contractions in elite soccer players", Scandinavian Journal of Medicine & Science in Sports, Vol.9, No.2, pp.81-87, 1999. DOI:
  12. Y. K. Kim, "The study on ratios of conventional and functional for isokinetic Hamstring : Quadriceps muscle strength in soccer player", Korean Journal of Sport Studies, Vol.42, No.6, pp.713-719, 2003.
  13. S. L. Jung, "A comparative study on isokinetic knee strength between competition athletes and demonstration team players in taekwondo", Master's thesis of Kyunghee university graduate school, 2006.
  14. P. B. Gastin, "Energy System Interaction and Relative Contribution During Maximal Exercise", Sports Medicine, Vol.31, No.10, pp.725-741, 2001. DOI:
  15. S. A. Sharp, B. J. Brouwer, "Isokinetic strength training of the hemiparetic knee: effects on function and spasticity", Archives of Physical Medicine and Rehabilitation, Vol.78, No.11, pp.1231-1236, 1997. DOI:
  16. T. W. Nesser, W. L. Lee, "THE RELATIONSHIP BETWEEN CORE STRENGTH AND PERFORMANCE IN DIVISION I FEMALE SOCCER PLAYERS", Journal of Exercise Physiology Online, Vol.12, No.2, pp.21-28, 2009.
  17. I. Garthe, T. Raastad, P. E. Refsnes, A. Koivisto, J. Sundgot-Borgen, "Effect of Two Different Weight-Loss Rates on Body Composition and Strength and Power-Related Performance in Elite Athletes", International Journal of Sport Nutrition and Exercise Metabolism, Vol.21, No.2, pp.97-104, 2011. DOI:
  18. D. Y. Kim, S. W. Yoon, "Comparison the Isokinetic Exercise Test of Various Sport Events Athletes", Korean Journal of Sport Science, Vol.16, No.3, pp.1-14, 2005.
  19. F. M. Iaia, J. Bangsbo, "Speed endurance training is a powerful stimulus for physiological adaptations and performance improvements of athletes", Scandinavian Journal of Medicine & Science in Sports, Vol.20, No.s2, pp.11-23, 2010. DOI:
  20. A. Thorstensson, B. Sjodin, P. Tesch, J. Karlsson, "Actomyosin ATPase, Myokinase, CPK and LDH in Human Fast and Slow Twitch Muscle Fibres", Acta Physiologica Scandinavica, Vol.99, No.2, pp.225-229, 1977. DOI:
  21. P. Kannus, "Ratio of Hamstring to Quadriceps Femoris Muscles' Strength in the Anterior Cruciate Ligament Insufficient Knee: Relationship to Long-term Recovery", Physical Therapy, Vol.68, No.6, pp.961-965, 1988. DOI:
  22. T. O. Clanton, K. J. Coupe, "Hamstring Strains in Athletes: Diagnosis and Treatment", Journal of the American Academy of Orthopaedic Surgeons, Vol.6, No.4, pp.237-248, 1998. DOI:
  23. L. O. Dunnam, G. R. Hunter, B. P. Williams, C. J. Dremsa, "BRIDGING THE GAP-RESEARCH: Comprehensive evaluation of the University of Alabama at Birmingham women's volleyball training program", Strength & Conditioning Journal, Vol.10, No.1, pp.43-53, 1988.