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Izet Bajramovic1, Ensar Abazovic1, Denis Causevic1, Ivor Doder1, Haris Alic1, Erol Kovacevic1, Nedim Babic1, Slavenko Likic1

1University of Sarajevo, Faculty of Sport and Physical Education, Sarajevo, Bosnia and Herzegovina

Relationship between Muscle Strength of Knee Stabilizers and Quality of Vertical Jump Performance in Physically Active Female Population

Sport Mont 2022, 20(1), 93-96 | DOI: 10.26773/smj.220216


High relationships between muscle strength and various forms of jumps are usually based on the research samples of professional athletes or students of sports and physical education. However such studies are less known in the case of recreational women. This study aimed to determine the relationship between isokinetic parameters of knee joint muscle strength with the efficiency of performing vertical jumps. The sample represents a group of 16 healthy and physically active women (age=31.04±3.71; height 168.13±8.34; weight 59.80±9.80). Knee extensors and flexors were evaluated by using an isokinetic dynamometer, while the two-foot vertical jump performance was measured using the Opto Jump System. Pearson's correlation coefficient was used to determine correlation magnitude (p<.05). The obtained results indicated high correlations of the knee extension peak torque dominant leg (KEPT D), knee extension peak torque non-dominant leg (KEPT ND) and knee flexion peak torque non-dominant leg (KFPT ND) with counter movement jump free arms (CMJFA) (r=.525; r=.511; r=.594; p<.05). High correlations was also indicated between KFPT ND with counter movement jump (CMJ) (r=.514; p<.05). Given that these are recreational women, we can assume that the countermovement free arm jump type was the most natural form of expressing their explosive potential. It is certainly important that future studies further examine the relationships between muscle strength and performance of primary and specific motor tasks in recreational women.


knee joint, peak torque, jumps, recreational women

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Abazović, E., Kovačević, E., Kovač, S., & Bradić, J. (2015). The effect of training of the non-dominant knee muscles on ipsi-and contralateral strength gains. Isokinetics and Exercise Science, 23 (3), 177-182. https://doi.org/10.3233/IES-150579

Abernethy, B. (1993). Attention. In Handbook of research on sport psychology, Edited by: Singer, R. N., Murphey, M. and Tennant, L. K. 125–170. New York: Macmillan.

Almuzaini, K. S., & Fleck, S. J. (2008). Modification of the standing long jump test enhances ability to predict anaerobic performance. The Journal of Strength & Conditioning Research, 22 (4), 1265-1272.

Anderson, M. A., Gieck, J. H., Perrin, D., Weltman, A., Rutt, R., & Denegar, C. (1991). The relationships among isometric, isotonic, and isokinetic concentric and eccentric quadriceps and hamstring force and three components of athletic performance. Journal of Orthopedic & Sports Physical Therapy, 14 (3), 114-120.

Beilock, S. L., Carr, T. H., MacMahon, C. & Starkes, J. L. (2002). When paying attention becomes counterproductive: impact of divided versus skill-focused attention on novice and experienced performance of sensorimotor skills. Journal of Experimental Psychology: Applied, 8, 6–16.

Binet, J., Lehance, C., Vandenbroek, G., Bury, T., & Croisier, J. L. (2005). Isokinetic and functional muscle performances among football players: a transversal study. İsokinetics and Exercise Science, 13 (1), 25-26.

Biodex Advantage Software (V.4x): Operation Manual: Current Recorded Normative Goals.

Bjelica, D. (2013). Theory of sports training [Teorija sportskog treninga]. Podgorica: University of Montenegro.

Bjelica, D., & Fratric, F. (2011). Sports training - theory, methodology and diagnostics [Sportski trening – teorija, metodika i dijagnostika]. Podgorica: University of Montenegro.

Blackburn, J. R., & Morrissey, M. C. (1998). The relationship between open and closed kinetic chain strength of the lower limb and jumping performance. J Orthop Sports Phys Ther., 27 (6), 430-435. https://doi.org/10.2519/jospt.1998.27.6.430

Bosco, C., & Komi, P. V. (1980). Influence of aging on the mechanical behavior of leg extensor muscles. European journal of applied physiology and occupational physiology, 45 (2), 209-219.

Bosco, C., Luhtanen, P., & Komi, P. V. (1983). A simple method for measurement of mechanical power in jumping. European journal of applied physiology and occupational physiology, 50 (2), 273-282.

Gardasevic, J., Akpinar, S., Popovic, S., & Bjelica, D. (2019). Increased Perceptual and Motor Performance of the Arms of Elite Water Polo Players. Applied Bionics and Biomechanics, 19 (2), 1-10. https://doi.org/10.1155/2019/6763470

Genuario, S. E., & Dolgener, F. A. (1980). The relationship of isokinetic torque at two speeds to the vertical jump. Research quarterly for exercise and sport, 51 (4), 593–598. https://doi.org/10.1080/02701367.1980.10609319

Gray, R. (2004). Attending to the execution of a complex sensorimotor skill: expertise differences, choking, and slumps. Journal of experimental psychology. Applied, 10(1), 42–54. https://doi.org/10.1037/1076-898X.10.1.42

Hopkins, W. (2002). A Scale of Magnitudes for Effect Statistics. Available at: http://www.sportsci.org/resource/stats/effectmag.html

Huang, H. J., & Mercer, V. S. (2001). Dual-task methodology: applications in studies of cognitive and motor performance in adults and children. Pediatric Physical Therapy, 13 (3), 133-140.

Joseph, M., Tiberio, D., Baird, J. L., Trojian, T. H., Anderson, J. M., Kraemer, W. J., & Maresh, C. M. (2008). Knee valgus during drop jumps in National Collegiate Athletic Association Division I female athletes: the effect of a medial post. The American journal of sports medicine, 36 (2), 285-289.

Komi, P. V., & Bosco, C. (1978). Utilization of stored elastic energy in leg extensor muscles by men and women. Medicine and science in sports, 10 (4), 261-265.

Kovačević, E., Abazović, E., Bradić, J., & Vrcić, M. (2012). The predictive value of isokinetic assessment on the explosive strength of the lower extremities. Homosporticus, 14 (1), 49-55.

Markovic, G., Dizdar, D., Jukic, I., & Cardinale, M. (2004). Reliability and factorial validity of squat and countermovement jump tests. The Journal of Strength & Conditioning Research, 18 (3), 551-555.

Metikos, D., Hofman, E., Prot, F., Pintar, Z., & Oreb, G. (1989). Measurement of basic motor dimensions of athletes [Mjerenje bazičnih motoričkih dimenzija sportaša]. Zagreb, Croatia.

Semciw, A. I., Pizzari, T., Murley, G. S., & Green, R. A. (2013). Gluteus medius: an intramuscular EMG investigation of anterior, middle and posterior segments during gait. Journal of Electromyography and Kinesiology, 23 (4), 858-864.

Tsiokanos, A., Kellis, E., Jamurtas, A., & Kellis, S. (2002). The relationship between jumping performance and isokinetic strength of hip and knee extensors and ankle plantar flexors. Isokinetics and exercise science, 10 (2), 107-115.

Wilson, G., & Murphy, A. (1995). The efficacy of isokinetic, isometric and vertical jump tests in exercise science. Australian journal of science and medicine in sport, 27 (1), 20-24.