The effect of Physical fatigue on balance in teenage soccer players with knee dynamic valgus defect
Subject Areas : Sports Injuries and Corrective TrainingAbouzar Kojori geshniani 1 , Mahdieh Gholamnia 2
1 - Ministry of Education
2 - B.Sc., Department of Exercise Physiology, University of Mazandaran, Iran.
Keywords: Physical Fatigue, Soccer, Static Balance, Dynamic Balance, Dynamic Knee Valgus,
Abstract :
The present study was conducted with the aim of investigating the effect of fatigue on balance, proprioception and jump-landing performance in teenage soccer players with dynamic knee valgus defect. In order to carry out this study, 30 male soccer players were selected and divided into two control groups (Age: 15.46 ± 0.51 years, Height: 1.70 ± 0.05 m, Weight: 63.20 ± 4.84 kg, Body Mass Index: 21.79 ± 0.91 kg/m2, sports history: 6.00 ± 1.41 years) and experimental (Age: 15.26 ± 0.45 years, Height: 1.71 ± 0.04) m, Weight: 65.33 ± 4.71 kg, Body Mass Index: 22.22 ± 1.63 kg/m2, sports history: 6.66 ± 2.52 years). In this study, after selecting the subjects with valgus defect, knee dynamics were evaluated with the tuck jump test. Then, Stork and Y tests were used to evaluate static balance and dynamic balance, respectively. After evaluating the variables, the subjects were divided into two control and experimental groups, and the special soccer fatigue protocol (SOFT90) was applied to the experimental group. After applying fatigue, the groups were re-evaluated. The results of this study showed that fatigue has a significant effect on reducing static balance (P=0.001), different directions of dynamic balance and its total score (P≤0.01). Also, the results related to the comparison between groups showed that fatigue led to the difference in the investigated variable between the two groups (P≤0.01). The results of this study showed that fatigue was an important factor in reducing balance. Therefore, it seems that reducing knee dynamic valgus defect, improving motor performance pattern and improving fit in muscle strength and balance can lead to reducing the risk of injury in fatigue conditions.
[1] Agel, J., Arendt, E.A. Bershadsky, B. (2005). Anterior cruciate ligament injury in national collegiate athletic association basketball and soccer: a 13-year review. Am J Sports Med 33(4): 524-530.
[2] Bradley, P.S. Portas, M.D. (2007). The relationship between preseason range of motion and muscle strain injury in elite soccer players. Journal of Strength and Conditioning Research, 21, 115-1159.
[3] Bruno, M., Matheus, J.W., Generosi, A.R., Marco, A.V., Junior, C.P. (2011). Effect of muscle fatigue on posture control in soccer Players during the short-pass movement. Revista Brasiliera Cineantropometria and Desempenho Humano, 13(5): 348-353.
[4] Cooper, C. N., Dabbs, N. C., Davis, J., Sauls, N. M. (2020). Effects of lower-body muscular fatigue on vertical jump and balance performance. The Journal of Strength & Conditioning Research, 34(10), 2903-2910.
[5] Gribble, P. A., Hertel, J., Plisky, P. (2012). Using the Star Excursion Balance Test to assess dynamic postural-control deficits and outcomes in lower extremity injury: a literature and systematic review. Journal of athletic training, 47(3), 339-357.
[6] Hanzlíková, I., Hébert-Losier, K. (2020). Is the Landing Error Scoring System reliable and valid? A systematic review. Sports Health, 12(2), 181-188.
[7] Hewett, T.E., Ford, K.R., Hoogenboom, B.J., Myer, G.D. (2010). Understanding and preventing acl injuries: current biomechanical and epidemiologic considerations - update 2010. N Am J Sports Phys Ther. 2010 Dec;5(4):234-51. PMID: 21655382; PMCID: PMC3096145.
[8] Johnston, W., Dolan, K., Reid, N., Coughlan, G. F., Caulfield, B. (2018). Investigating the effects of maximal anaerobic fatigue on dynamic postural control using the Y-Balance Test. Journal of science and medicine in sport, 21(1), 103-108.
[9] Lovell, R., Knapper, B., Small, K. (2008). Physiological responses to SAFT90: a new soccer-specific match simulation. In Verona-Ghirada Team Sports Conference Proceedings.
[10] Mather, R.C. 3rd, Koenig, L., Kocher, M.S., Dall, T.M., Gallo, P., Scott, D.J., Bach, B.R. Jr, Spindler, K.P.; MOON Knee Group. (2013). Societal and economic impact of anterior cruciate ligament tears. J Bone Joint Surg Am. 2013 Oct 2;95(19):1751-9. doi: 10.2106/JBJS.L.01705. PMID: 24088967; PMCID: PMC3779900.
[11] Mohammad Ashour, Z., Daneshmandi, H. (2018). the effect of the functional fatigue protocol on the dynamic balance of young gymnasts. the third national congress of sports science and health achievements, Rasht, Iran. https://civilica.com/doc/979539.
[12] Mohammadi, H. (2019). The prevalence of neuromuscular deficiencies associated with non-contact anterior cruciate ligament injury in healthy collegiate student-athletes. Physical Treatments-Specific Physical Therapy Journal, 9(4), 3-3.
[13] Niknam, H., Sarmadi, A., Salavati, M., Madadi, F. (2011). The effect of knee kinesiotaping on proprioception and weight bearing in ACL reconstructed patients. Daneshvar Medicine, 19(2), 33-42.
[14] Olsen, O.E., Myklebust, G., Engebretsen, L., Bahr, R. (2004). Injury mechanisms for anterior cruciate ligament injuries in team handball: a systematic video analysis. Am J Sports Med. 2004 Jun; 32(4):1002-12. doi: 10.1177/0363546503261724. PMID: 15150050.
[15] Pau, M., Ibba, J., Attene, G. (2014). Fatigue-Induced Balance Impairment in Young Soccer Players. J Athl Train. 2014 Jul-Aug; 49(4): 454–461. doi: 10.4085/1062-6050-49.2.12.
[16] Plisky, P. J., Rauh, M. J., Kaminski, T. W., Underwood, F. B. (2006). Star Excursion Balance Test as a predictor of lower extremity injury in high school basketball players. Journal of orthopaedic & sports physical therapy, 36(12), 911-919.
[17] Powers, C. M. (2010). The Influence of Abnormal Hip Mechanics on Knee Injury: A Biomechanical Perspective. Journal of Orthopaedic and Sports Physical Therapy, 40(2), 42-51.
[18] Rahnama, N., Bambaeichi, E., Daneshjoo, A. (2009). The epidemiology of knee injuries in Iranian male professional soccer Players. Sport Sci Health; (5):9–14.
[19] Rahnama, N., Reilly, T. Lees, A. (2003). Muscle fatigue during simulated soccer. Journal of Sports Sciences, 21, 4, 248-249.