Comparison of six weeks eccentric overload training between bilateral and unilateral squat in basketball players
Basketball is a team sport in which strength and power in the lower limb are key variables. The use of eccentric overload devices has augmented in the past years, and several studies have shown the benefits of this methodology to improve physical parameters. The aim of the present study is to compare the effects of bilateral and unilateral squat during eccentric overload training. Ten players from a same team participated in a six weeks of two session per week eccentric overload training. Participants were divided in two groups according to their performance in pretest. Test measured in pre and postest situation were a power test in flywheel, CMJ, triple hop test and T-Test. Training consisted in 4 sets of 8 repetitions of bilateral or unilateral squat. After treatment both groups improve their performance in T-Test and power test in flywheel device. Trends of improve were observed for triple hop test, with a greater ES for unilateral group. Results shown as eccentric overload training of bilateral or unilateral squat can be a good choice to improve physical performance, with different benefits according to the type of execution.
Abdelkrim, N. B., Castagna, C., Jabri, I., Battikh, T., El Fazaa, S., & El Ati, J. (2010). Activity profile and physiological requirements of junior elite basketball players in relation to aerobic-anaerobic fitness. The Journal of Strength & Conditioning Research, 24(9), 2330-2342. doi: 10.1519/JSC.0b013e3181e381c1
Boone, J., & Bourgois, J. (2013). Morphological and physiological profile of elite basketball players in Belgium. International Journal of Sports Physiology and Performance, 8(6), 630-638. doi.org/10.1123/ijspp.8.6.630
Delextrat, A., & Cohen, D. (2009). Strength, power, speed, and agility of women basketball players according to playing position. The Journal of Strength & Conditioning Research, 23(7), 1974-1981. doi: 10.1519/JSC.0b013e3181b86a7e
De Hoyo M, Pozzo M, Sañudo B, Carrasco L, Gonzalo-Skok O, Domínguez-Cobo S, Moran-Camacho E. (2015) Effects of a 10-week in-season eccentric-overload training program on muscle-injury prevention and performance in junior elite soccer players. International Journal of Sports Physiology and Performance, 10 (1): 46–52. doi.org/10.1123/ijspp.2013-0547
Gonzalo-Skok, O., Tous-Fajardo, J., Suarez-Arrones, L., Arjol-Serrano, J. L., Casajús, J. A., & Mendez-Villanueva, A. (2017). Single-leg power output and between-limbs imbalances in team-sport players: Unilateral versus bilateral combined resistance training. International Journal of Sports Physiology and Performance, 12(1), 106-114. doi.org/10.1123/ijspp.2015-0743
Gual, G., Fort-Vanmeerhaeghe, A., Romero-Rodríguez, D., & Tesch, P. A. (2016). Effects of in-season inertial resistance training with eccentric overload in a sports population at risk for patellar tendinopathy. The Journal of Strength & Conditioning Research, 30(7), 1834-1842. doi: 10.1519/JSC.0000000000001286
Hoare, D. G. (2000). Predicting success in junior elite basketball players—the contribution of anthropometic and physiological attributes. Journal of Science and Medicine in Sport, 3(4), 391-405. doi: https://doi.org/10.1016/S1440-2440(00)80006-7
Köklü, Y., Alemdaroğlu, U., Koçak, F., Erol, A., & Fındıkoğlu, G. (2011). Comparison of chosen physical fitness characteristics of Turkish professional basketball players by division and playing position. Journal of Human Kinetics, 30, 99-106. doi: https://doi.org/10.2478/v10078-011-0077-y
McInnes, S. E., Carlson, J. S., Jones, C. J., & McKenna, M. J. (1995). The physiological load imposed on basketball players during competition. Journal of Sports Sciences, 13(5), 387-397. doi: https://doi.org/10.1080/02640419508732254
Ostojic, S. M., Mazic, S., & Dikic, N. (2006). Profiling in basketball: physical and physiological characteristics of elite players. The Journal of Strength & Conditioning Research, 20(4), 740-744. doi: 10.1519/R-15944.1
Pauole, K., Madole, K., Garhammer, J., Lacourse, M., & Rozenek, R. (2000). Reliability and validity of the T-test as a measure of agility, leg power, and leg speed in college-aged men and women. The Journal of Strength & Conditioning Research, 14(4), 443-450. doi: 10.1519/00124278-200011000-00012
Raya-González, J., Suárez-Arrones, L., Bretones, A. R., & de Villarreal, E. S. (2018). Efectos a corto plazo de un programa de entrenamiento de sobrecarga excéntrica sobre el rendimiento físico en jugadores de fútbol de élite U-16. Retos, 33, 106-111. doi:10.5232
Rhea, M. R. (2004). Determining the magnitude of treatment effects in strength training research through the use of the effect size. The Journal of Strength & Conditioning Research, 18(4), 918-920. doi: 10.1519/14403.1
Sabido, R., Hernández-Davó, J. L., Botella, J., Navarro, A., & Tous-Fajardo, J. (2017). Effects of adding a weekly eccentric-overload training session on strength and athletic performance in team-handball players. European Journal of Sport Science, 17(5), 530-538. doi: 10.1080/17461391.2017.1282046
Sallet, P., Perrier, D., Ferret, J. M., Vitelli, V., & Baverel, G. (2005). Physiological differences in professional basketball players as a function of playing position and level of play. Journal of Sports Medicine and Physical Fitness, 45(3), 291.
Tous-Fajardo, J., Gonzalo-Skok, O., Arjol-Serrano, J. L., & Tesch, P. (2016). Enhancing change-of-direction speed in soccer players by functional inertial eccentric overload and vibration training. International Journal of Sports Physiology and Performance, 11(1), 66-73. doi: 10.1123/ijspp.2015-0010
Ziv, G., & Lidor, R. (2009). Physical attributes, physiological characteristics, on-court performances and nutritional strategies of female and male basketball players. Sports Medicine, 39(7), 547. doi: 10.2165/00007256-200939070-00003.