Functional dimorphism and relationship between different lower extremity strength tests in young elite judokas

Kursat Acar, Ali Kerim Yilmaz


The present study investigated the limb symmetry index (LSI) and the relationship between different functional strength tests in young elite judokas. Seventeen males (age= 16.88±1.40 years, height= 179.00±7.00 cm, weight= 78.76±15.22 kg and BMI 24.40±3.36 kg/m2) participated in the study voluntarily. Participants were tested with single leg (SL), and triple leg (THD) hop for distance, crossover hop for distance (CHD), 6 m Timed Hop Test (6mTHT), and single-leg vertical jump (SLVJ) tests, and countermovement jump (CMJ). All SL hop tests (SLHT) were applied to both right (Rs) and left sides (Ls), while CMJ was applied as without (CMJWAS) and with arm swing (CMJAS). Paired sample t-test and Pearson correlation tests were used in statistical analyses. In all SLHTs, no statistical significance was found between Rs and Ls. However, significance was found between CMJWAS and CMJAS. There was also no significance in LSIs between all SLHTs. Correlations were found between SL, THD, CHD, VJ tests, while negative and significant correlations were found between SL, THD, CHD, VJ tests, and 6 m THT. No significance was found between SLHTs and CMJWAS and CMJAS. As a result, it was found that Rs and Ls of young judokas produced similar strength in SLHTs, while they caused differences in CMJWAS and CMJAS values; when evaluated in terms of LSI, judokas showed similar rates in all SLHTs, and these rates were within reliable ranges; SLHTs had correlations with each other, but they did not show any correlation with CMJ.


Martial arts; combat sports; judo; limb symmetry; limb symmetry index; hop tests

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Augustsson, J., Thomeé. R., & Karlsson, J. (2004). Ability of a new hop test to determine functional deficits after anterior cruciate ligament reconstruction. Knee Surgery, Sports Traumatology, Arthroscopy, 12, 350-356. doi:

Bosco, C., Viitasalo, J. T., Komi, P. V., & Luhtanen, P. (1982). Combined effect of elastic energy and myoelectrical potentiation during stretch-shortening cycle. Acta Physiologica Scandinavica, 114(4), 557-65. doi:

Detanico, D., Dal Pupo, J., Franchini, E., & Santos, S. G. (2012). Relationship of aerobic and neuromuscular indexes with specific actions in judo. Science & Sports, 27(1), 16-22. doi:

Dopico, X., Soler, E. I., Carballeira, E., Mayo, X., Arda., A., & González-Freire, M. (2014). The relationship between motoric dominance and functional dominance while executing judo techniques: A study on laterality. Archives of Budo, 10, 287–294.

Drid, P., Casals, C., Mekic, A., Radjo, I., Stojanovic, M., & Ostojic, SM. (2015). Fitness and anthropometric profiles of international vs. national judo medalists in half-heavyweight category. Journal of Strength & Conditioning Research, 29(8), 2115-2121. doi:

Drid, P., Drapsin, M., Trivic, T., Bratic, M., & Obadov, S. (2009). Thigh muscles flexion/extension ratio in elite judo players. Journal of Combat Sports and Martial Arts, 1(1), 21-25.

Ermiş, E., Yilmaz, A. K., Kabadayi, M., Bostanci, Ö., & Mayda, M. H. (2019). Bilateral and ipsilateral peak torque of quadriceps and hamstring muscles in elite judokas. Journal of Musculoskeletal & Neuronal Interactions, 19(3), 286.

Franchini, E., & Del Vecchio, F. B. (2008). Preparação física para atletas de judô. São Paulo: Phorte.

Franchini, E., Del Vecchio, F. B., Matsushigue, K. A., & Artioli, G. G. (2011). Physiological profiles of elite judo athletes. Sports Medicine, 41(2), 147-166. doi:

Franchini, E., Takito, M. Y., & Bertuzzi, R. C. M. (2005). Morphological, physiological and technical variables in high-level college judoists. Archives of Budo, 1(1), 1-7.

Gokeler, A., Welling, W., Benjaminse, A., Lemmink, K., Seil, R., & Zaffagnini, S. (2017). A critical analysis of limb symmetry indices of hop tests in athletes after anterior cruciate ligament reconstruction: a case control study. Orthopaedics & Traumatology: Surgery & Research, 103(6), 947-951. doi:

Grindem, H., Logerstedt, D., Eitzen, I., Moksnes, H., Axe, M. J., Snyder-Mackler, L., & Risberg, M. A. (2011). Single-legged hop tests as predictors of self-reported knee function in nonoperatively treated individuals with anterior cruciate ligament injury. The American Journal of Sports Medicine, 39(11), 2347-2354. doi:

Harris, G. R., Stone, M. H., O'bryant, H. S., Proulx, C. M., & Johnson, R. L. (2000). Short-term performance effects of high power, high force, or combined weight-training methods. The Journal of Strength & Conditioning Research, 14(1), 14-20.

Hegedus, E. J., McDonough, S., Bleakley, C., Cook, C. E., & Baxter, G. D. (2015). Clinician-friendly lower extremity physical performance measures in athletes: a systematic review of measurement properties and correlation with injury, part 1. The tests for knee function including the hop tests. British Journal of Sports Medicine, 49(10), 642-648.

Imamura, R., Iteya, M., Hreljac, A., & Escamilla, R. (2007). A kinematic comparison of the judo throw Harai-goshi during competitive and non-competitive conditions. Journal of Sports Science & Medicine, 6(CSSI-2), 15-22.

Kons, R. L., Orssatto, L. B. D. R., Sakugawa, R. L., da Silva Junior, J. N., Diefenthaeler, F., & Detanico, D. (2020). Effects of stretch-shortening cycle fatigue protocol on lower limb asymmetry and muscle soreness in judo athletes. Sports Biomechanics, 1-16. doi:

Koral, J., & Dosseville, F. (2009). Combination of gradual and rapid weight loss: Effects on physical performance and psychological state of elite judo athletes. Journal of Sports Sciences, 27(2), 115-120. doi:

Kubo, K. (2006). Yata H, Kanehisa H, Fukunaga T. Effects of isometric squat training on the tendon stiffness and jump performance. European Journal Applied Physiology, 96, 305-314. doi:

Lambert, C., Pfeiffer, T., Lambert, M., Brozat, B., Lachmann, D., Shafizadeh, S., & Akoto, R. (2020). Side Differences Regarding the Limb Symmetry Index in Healthy Professional Athletes. International Journal of Sports Medicine, 41(11), 729-735. doi:

Logerstedt, D., Grindem, H., Lynch., A, Eitzen., I, Engebretsen., L, Risberg., M. A, & Snyder-Mackler, L. (2012). Single-legged hop tests as predictors of self-reported knee function after anterior cruciate ligament reconstruction: the Delaware-Oslo ACL cohort study. The American Journal of Sports Medicine, 40(10), 2348-2356. doi:

Millikan, N., Grooms, D. R., Hoffman, B., & Simon, J. E. (2019). The development and reliability of 4 clinical neurocognitive single-leg hop tests: implications for return to activity decision-making. Journal of Sport Rehabilitation, 28(5), 536-544. doi:

Monteiro, L. F., Massuça, L. M., García, J. G., Carratala, V., & Proença, J. (2011). Plyometric muscular action tests in judo-and non-judo athletes. Isokinetics and Exercise Science, 19(4), 287-293. doi:

Munro AG, Herrington LC. (2011). Between-session reliability of four hop tests and the agility T-test. The Journal of Strength & Conditioning Research, 25(5), 1470-1477. doi:

Negrete, R., & Brophy, J. (2000). The relationship between isokinetic open and closed chain lower extremity strength and functional performance. Journal of Sport Rehabilitation, 9(1), 46-61. doi:

Noyes, F. R., Barber, S. D., & Mangine, R. E. (1991). Abnormal lower limb symmetry determined by function hop tests after anterior cruciate ligament rupture. The American Journal of Sports Medicine, 19(5), 513-518. doi:

Peebles AT, Renner KE, Miller TK, Moskal JT, Queen RM. (2019). Associations between Distance and Loading Symmetry during Return to Sport Hop Testing. Medicine and Science in Sports and Exercise, 51(4), 624-629. doi:

Perrin, P., Deviterne, D., Hugel, F., & Perrot, C. (2002). Judo, better than dance, develops sensorimotor adaptabilities involved in balance control. Gait & Posture, 15(2), 187-194. doi:

Prill, R., Michel, S., Schulz, R., & Coriolano, H. J. A. (2019). Body composition and strength parameters in elite judo athletes 5 years after anterior cruciate ligament reconstruction. International Journal Sports Medicine, 40(1), 38-42. doi:

Reid, A., Birmingham, TB., Stratford, P. W., Alcock, G.K., & Giffin, J. R. (2007). Hop testing provides a reliable and valid outcome measure during rehabilitation after anterior cruciate ligament reconstruction. Physical Therapy, 87(3), 337-349. doi:

Ross, M. D., Langford, B., & Whelan, P. J. (2002). Test-retest reliability of 4 single-leg horizontal hop tests. Journal of Strength and Conditioning Research, 16(4), 617-622.

Simenko, J., Rauter, S., & Hadzic, V. (2016, June). Under 73 kg category isokinetic quadriceps and hamstring strength profile of youth judokas. In 3rd European Science of Judo Research Symposium & 2nd Scientific and professional conference on Judo: Applicable research in judo: Proceedings book. Poreč. 20th–21st of (pp. 65-69).

Stradijot, F., Pittorru, G. M., & Pinna, M. (2012). The functional evaluation of lower limb symmetry in a group of young elite judo and wrestling athletes. Isokinetics and Exercise Science, 20(1), 13-16. doi:

Takahashi, S., & Okuwaki, T. (2017). Epidemiological survey of anterior cruciate ligament injury in Japanese junior high school and high school athletes: cross-sectional study. Research in Sports Medicine, 25(3), 266–276. doi:

Thomas, S. G., Cox, M. H., LeGal, Y. M., Verde, T. J., & Smith, H. K. (1989). Physiological profiles of the Canadian National Judo Team. Canadian journal of sport sciences= Journal Canadien des sciences du sport, 14(3), 142.

Thomeé, R., Kaplan, Y., Kvist, J., Myklebust, G., Risberg, M. A., Theisen, D., & Witvrouw, E. (2011). Muscle strength and hop performance criteria prior to return to sports after ACL reconstruction. Knee Surgery, Sports Traumatology, Arthroscopy, 19(11), 1798. doi:

Torres-Luque, G., Hernandez-Garcia, R., Garatachea, N., & Nikolaidis, P. T. (2015). Anthropometric characteristics and neuromuscular function in young judo athletes by sex, age and weight category. Sport Science for Health, 11, 117–124. doi:

Yılmaz, A. K., Ermiş, E., Kabadayı, M., & Bostancı, Ö. (2020). Correlation of Upper and Lower Extremities Isokinetic Strength in Elite Male Judokas. Journal of Men's Health, 16(4), e141-e152. doi:

Yılmaz, A. K., & Kabadayı, M. (2020). Electromyographic responses of knee isokinetic and single-leg hop tests in athletes: dominant vs. non-dominant sides. Research in Sports Medicine, 1-15. doi:

Yoshitomi, S. K., Tanaka, C., Duarte, M., Lima, F., Morya, E., & Hazime, F. (2006). Respostas posturais à perturbação externa inesperada em judocas de diferentes níveis de habilidade. Revista Brasileira de Medicina do Esporte, 12(3), 159-163. doi:

Zaggelidis, G., Lazaridis, S. N., Malkogiorgos, A., & Mavrovouniotis, F. (2012). Differences in vertical jumping performance between untrained males and advanced Greek judokas. Archives of Budo, 8, 87–90.



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