The Acute Effects of Small-Sided Games on Hamstring Strength in Young Soccer Players
Abstract
The study purpose.The Small-side games (SSG) are high intensity drills very popular in soccer training. The knowledge of the acute effects of the exercises that make up the training session is very relevant especially to reduce youth soccer injury risk. This study aim to assessment the acute effects of SSG on hamstring eccentric strength and to know the lower limb strength asymmetries (LLSA) in young soccer players.
Materials and methods. The sample is composed of male young soccer players Under 17 (n = 24, 16.6 ± 0.5 years, 168.8 ± 4.6 cm, 58.2 ± 3.5 kg). Before and after SSG (4vs4, 3×4 min, 3min recovery, no goalkeepers) the hamstring eccentric strength and the lower limb eccentric strength asymmetry were evaluated used a specific dynamometer (N3 Easytech, Italy) and relative software. Every young soccer player performed a single repetition of the Nordic hamstring exercise with dynamometer; after about 2 minutes, instead, they performed 5 repetitions of the same exercise, without interruption. For both assessments, were detected the eccentric strength and the LLSA.
Results. The hamstring eccentric strength assessment show substantial and statistically significant differences in the assessment in comparison pre-post values. A significant reduction was observed for eccentric strength peak (p < 0.018 and p < 0.014 for right/left limb), for eccentric average strength (p < 0.017 and p < 0.006 for right/left limb). The eccentric peak strength asymmetry value and the average strength asymmetry value revealed a significant increase (p < 0.0001).
Conclusions. The reduction of strength after SSG requires careful consideration of the exercises order in the training session. The practitioners can plan training sessions and apply SSGs more effectively, with more attention to the effects on hamstrings.
Downloads
References
Raiola, G., & Altavilla, G. (2020). Testing motor skills, general and special coordinative, in young soccer. Journal of Human Sport & Exercise, 15, Supplementary Issue, 1Proc Winter event Costa Blanca: 206-212.
Ceruso, R., Esposito, G., & D’Elia, F. (2019). Coordination attached to the qualitative aspects of football. Journal of Physical Education and Sport, 19, 260, 1773-1776.
Fischetti, F., Cataldi, S., & Greco, G. (2019). A combined plyometric and resistance training program improves fitness performance in 12 to 14-years-old boys. Sport Sciences for Health, 15(3), 615-621. https://doi.org//s11332-019-00560-2
Barbalho, M., Gentil, P., Raiol, R., Del Vecchio, F. B., Ramirez-Campillo, R., & Coswig, V. S. (2018). Non-Linear Resistance Training Program Induced Power and Strength but Not Linear Sprint Velocity and Agility Gains in Young Soccer Players. Sports (Basel, Switzerland), 6(2), 43. https://doi.org/10.3390/sports6020043
D’Isanto, T., D’Elia, F., Raiola, G., & Altavilla, G. (2019). Assessment of sport performance: Theoretical aspects and practical indications. Sport Mont, 17, 79-82.
Köklü, Y., Sert, Ö., Alemdaroğlu, U., & Arslan, Y. (2015). Comparison of the physiological responses and time-motion characteristics of young soccer players in small-sided games: the effect of goalkeeper. Journal of strength and conditioning research, 29(4), 964-971. https://doi.org/10.1519/JSC.0b013e3182a744a1
Sanchez-Sanchez, J., Sánchez García, M., Asián-Clemente, J.A., Nakamura, F.Y, & Ramírez-Campillo, R. (2019). Effects of the Directionality and the Order of Presentation Within the Session on the Physical Demands of Small-Sided Games in Youth Soccer. Asian J Sports Med, 10:1-8.
Sannicandro, I, Traficante, P, & Cofano, G. (2019a). Hamstring injury prevention: the strength assessment in young soccer players. MOJ Sports Med., 3(2), 28-32. https://doi.org/mojsm.2019.03.00075
Halouani, J., Chtourou, H., Dellal, A., Chaouachi, A., & Chamari, K. (2017). Soccer small-sided games in young players: rule modification to induce higher physiological responses. Biology of sport, 34(2), 163-168. https://doi.org/10.5114/biolsport.2017.64590
Castillo, D., Raya-González, J., Sarmento, H., Clemente, F. M., & Yanci, J. (2021). Effects of including endurance and speed sessions within small-sided soccer games periodization on physical fitness. Biology of sport, 38(2), 291-299. https://doi.org/10.5114/biolsport.2021.99325
Kunz, P., Engel, F. A., Holmberg, H. C., & Sperlich, B. (2019). A Meta-Comparison of the Effects of High-Intensity Interval Training to Those of Small-Sided Games and Other Training Protocols on Parameters Related to the Physiology and Performance of Youth Soccer Players. Sports medicine - open, 5(1), 7. https://doi.org/10.1186/s40798-019-0180-5
Selmi, O., Marzouki, H., Ouergui, I., BenKhalifa, W., & Bouassida, A. (2018). Influence of intense training cycle and psychometric status on technical and physiological aspects performed during the small-sided games in soccer players. Research in Sports Medicine, 26(4):401-412.
Zurutuza, U., Castellano, J., Echeazarra, I., Guridi, I., & Casamichana, D. (2020). Selecting Training-Load Measures to Explain Variability in Football Training Games. Front. Psychol. 10:2897. https://doi.org/fpsyg.2019.02897
Miranda, G., Aliberti, S., & Invernizzi, P.L. (2021). Effects of an 8-week intermittent aerobic training program on aerobic power in a professional soccer team. Journal of Human Sport and Exercise, 16(3proc), S1031-S1038. https://doi.org/10.14198/jhse.2021.16.Proc3.20
Sannicandro, I., Piccinno, A., Rosa, A.R., Raiola, G., Cofano, G. (2020). Analysis of external load during SSG 5vs5 with and without external wildcard (jolly) soccer players. Sport Science, 14, 65-71.
Sannicandro, I. (2021b). Small-sided games and size pitch in elite female soccer players: A short narrative review. Journal of Human Sport and Exercise, 16(2proc), S361-S369.
Köklü, Y., Cihan, H., Alemdaroğlu, U., Dellal, A., & Wong, D. P. (2020). Acute effects of small-sided games combined with running drills on internal and external loads in young soccer players. Biology of sport, 37(4), 375–381. https://doi.org/10.5114/biolsport.2020.96943
Coutinho, D., Gonçalves, B., Santos, S., Travassos, B., Wong Del, P., & Sampaio, J. (2018). Effects of the pitch configuration design on players’ physical performance and movement behaviour during soccer SSG. Research in Sports Medicine. https://doi.org/10.1080/15438627.2018.1544133
Clemente, F.M., Sarmento, H., Rabbani, A., Van Der Linden, C.M.I.N., Kargarfard, M., & Costa, I.T. (2019). Variations of external load variables between medium- and large-sided soccer games in professional players. Res Sports Med, 27(1):50-59.
Goto, H., & King, J.A. (2019). High-intensity demands of 6-a-side small-sided games and 11-a-side matches in youth soccer players, Pediatr Exerc Sci, 31(1):85-90.
Sannicandro, I. (2019). Small-Sided Games configuration pitch and external motor load relationship in young soccer players: narrative literature review, Journal of Physical Education and Sport, 19 (Supplement issue 5), 1989-1993.
Sannicandro, I., Belli, E., & La Torre, A. (2021b). Warm up and postactivaction potentiation: a very topical debate. J Sports Med Phys Fitness, 61, 331-332.
Castillo, D., Rodríguez-Fernández, A., Nakamura, F. Y., Sanchez-Sanchez, J., Ramirez-Campillo, R., Yanci, J., Zubillaga, A., & Raya-González, J. (2019). Influence of Different Small-Sided Game Formats on Physical and Physiological Demands and Physical Performance in Young Soccer Players. Journal of strength and conditioning research. Advance online publication. https://doi.org/10.1519/JSC.0000000000003114
Diemer, W. M., Winters, M., Tol, J. L., Pas, H., & Moen, M. H. (2021). Incidence of Acute Hamstring Injuries in Soccer: A Systematic Review of 13 Studies Involving More Than 3800 Athletes With 2 Million Sport Exposure Hours. The Journal of orthopaedic and sports physical therapy, 51(1), 27-36. https://doi.org/10.2519/jospt.2021.9305
Ribeiro-Alvares, J. B., Dornelles, M. P., Fritsch, C. G., de Lima-E-Silva, F. X., Medeiros, T. M., Severo-Silveira, L., Marques, V. B., & Baroni, B. M. (2020). Prevalence of Hamstring Strain Injury Risk Factors in Professional and Under-20 Male Football (Soccer) Players. Journal of sport rehabilitation, 29(3), 339-345. https://doi.org/10.1123/jsr.2018-0084
Vicens-Bordas, J., Esteve, E., Fort-Vanmeerhaeghe, A., Clausen, M. B., Bandholm, T., Opar, D., Shield, A., & Thorborg, K. (2020). Eccentric hamstring strength is associated with age and duratiom of previous season hamstring injury in male soccer players. International journal of sports physical therapy, 15(2), 246-253.
Larruskain, J., Lekue, J. A., Diaz, N., Odriozola, A., & Gil, S. M. (2018). A comparison of injuries in elite male and female football players: A five-season prospective study. Scandinavian journal of medicine & science in sports, 28(1), 237-245. https://doi.org/10.1111/sms.12860
Madison, G., Patterson, S. D., Read, P., Howe, L., & Waldron, M. (2019). Effects of Small-Sided Game Variation on Changes in Hamstring Strength. Journal of strength and conditioning research, 33(3), 839-845. https://doi.org/10.1519/JSC.0000000000002955
Wilmes, E., de Ruiter, C. J., Bastiaansen, B., Goedhart, E. A., Brink, M. S., van der Helm, F., & Savelsbergh, G. (2021). Associations between Hamstring Fatigue and Sprint Kinematics during a Simulated Football (Soccer) Match. Medicine and science in sports and exercise. Advance online publication. https://doi.org/10.1249/MSS.0000000000002753
Ekstrand, J., Waldén, M., & Hägglund, M. (2016). Hamstring injuries have increased by 4% annually in men’s professional football, since 2001: a 13-year longitudinal analysis of the UEFA Elite Club injury study. British journal of sports medicine, 50(12), 731-737. https://doi.org/10.1136/bjsports-2015-095359
Greig, M. (2019). Concurrent changes in eccentric hamstring strength and knee joint kinematics induced by soccer-specific fatigue. Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine, 37, 21–26. https://doi.org/10.1016/j.ptsp.2019.02.003
Rhodes, D., McNaughton, L., & Greig, M. (2019). The temporal pattern of recovery in eccentric hamstring strength post-soccer specific fatigue. Res Sports Med. 27(3):339-350. https://doi.org/15438627.2018.1523168
Greig, M., & Siegler, J. C. (2009). Soccer-specific fatigue and eccentric hamstrings muscle strength. Journal of athletic training, 44(2), 180-184. https://doi.org/10.4085/1062-6050-44.2.180
Small, K., McNaughton, L., Greig, M., & Lovell, R. (2010). The effects of multidirectional soccer-specific fatigue on markers of hamstring injury risk. Journal of science and medicine in sport, 13(1), 120-125. https://doi.org/10.1016/j.jsams.2008.08.005
Lovell, R., Siegler, J. C., Knox, M., Brennan, S., & Marshall, P. W. (2016). Acute neuromuscular and performance responses to Nordic hamstring exercises completed before or after football training. Journal of sports sciences, 34(24), 2286-2294. https://doi.org/10.1080/02640414.2016.1191661
Matthews, M. J., Heron, K., Todd, S., Tomlinson, A., Jones, P., Delextrat, A., & Cohen, D. D. (2017). Strength and endurance training reduces the loss of eccentric hamstring torque observed after soccer specific fatigue. Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine, 25, 39-46. https://doi.org/10.1016/j.ptsp.2017.01.006
Marshall, P. W., Lovell, R., Jeppesen, G. K., Andersen, K., & Siegler, J. C. (2014). Hamstring muscle fatigue and central motor output during a simulated soccer match. PloS one, 9(7), e102753. https://doi.org/10.1371/journal.pone.0102753
Perroni, F., Pintus, A., Frandino, M., Guidetti, L., & Baldari, C. (2018). Relationship Among Repeated Sprint Ability, Chronological Age, and Puberty in Young Soccer Players, Journal of Strength and Conditioning Research, 32(2), 364-371.
Lee, J., Mok, K. M., Chan, H., Yung, P., & Chan, K. M. (2018). Eccentric hamstring strength deficit and poor hamstring-to-quadriceps ratio are risk factors for hamstring strain injury in football: A prospective study of 146 professional players. Journal of science and medicine in sport, 21(8), 789-793. https://doi.org/10.1016/j.jsams.2017.11.017
Beato, M., Young, D., Stiff, A., & Coratella, G. (2021). Lower-Limb Muscle Strength, Anterior-Posterior and Inter-Limb Asymmetry in Professional, Elite Academy and Amateur Soccer Players. Journal of human kinetics, 77, 135-146. https://doi.org/10.2478/hukin-2020-0058
Opar, D. A., Timmins, R. G., Behan, F. P., Hickey, J. T., van Dyk, N., Price, K., & Maniar, N. (2021). Is Pre-season Eccentric Strength Testing During the Nordic Hamstring Exercise Associated with Future Hamstring Strain Injury? A Systematic Review and Meta-analysis. Sports medicine (Auckland, N.Z.). Advance online publication. https://doi.org/10.1007/s40279-021-01474-1
Opar, D. A., Williams, M. D., Timmins, R. G., Hickey, J., Duhig, S. J., & Shield, A. J. (2015). Eccentric hamstring strength and hamstring injury risk in Australian footballers. Medicine and science in sports and exercise, 47(4), 857-865. https://doi.org/10.1249/MSS.0000000000000465
White, A. K., Klemetson, C. J., Farmer, B., Katsavelis, D., Bagwell, J. J., & Grindstaff, T. L. (2018). Comparison of clinical fatigue protocols to decrease single-leg forward hop performance in healty individuals. International journal of sports physical therapy, 13(2), 143–151.
Leister, I., Mattiassich, G., Kindermann, H., Ortmaier, R., Barthofer, J., Vasvary, I., Katzensteiner, K., Stelzhammer, C., & Kulnik, S. T. (2018). Reference values for fatigued versus non-fatigued limb symmetry index measured by a newly designed single-leg hop test battery in healthy subjects: a pilot study. Sport sciences for health, 14(1), 105-113. https://doi.org/10.1007/s11332-017-0410-5
Valle, X., Malliaropoulos, N., Párraga Botero, J. D., Bikos, G., Pruna, R., Mónaco, M., & Maffulli, N. (2018). Hamstring and other thigh injuries in children and young athletes. Scandinavian journal of medicine & science in sports, 28(12), 2630-2637. https://doi.org/10.1111/sms.13282
Buckthorpe, M., Wright, S., Bruce-Low, S., Nanni, G., Sturdy, T., Gross, A. S., Bowen, L., Styles, B., Della Villa, S., Davison, M., & Gimpel, M. (2019). Recommendations for hamstring injury prevention in elite football: translating research into practice. British journal of sports medicine, 53(7), 449-456. https://doi.org/10.1136/bjsports-2018-099616
Crossley, K. M., Patterson, B. E., Culvenor, A. G., Bruder, A. M., Mosler, A. B., & Mentiplay, B. F. (2020). Making football safer for women: a systematic review and meta-analysis of injury prevention programmes in 11 773 female football (soccer) players. British journal of sports medicine, 54(18), 1089-1098. https://doi.org/10.1136/bjsports-2019-101587
Lu, D., McCall, A., Jones, M., Kovalchik, S., Steinweg, J., Gelis, L., & Duffield, R. (2020). Injury epidemiology in Australian male professional soccer. Journal of science and medicine in sport, 23(6), 574-579. https://doi.org/10.1016/j.jsams.2020.01.006
Daneshjoo, A., Mokhtar, A. H., Rahnama, N., & Yusof, A. (2012). The effects of injury preventive warm-up programs on knee strength ratio in young male professional soccer players. PloS one, 7(12), e50979. https://doi.org/10.1371/journal.pone.0050979
Daneshjoo, A., Rahnama, N., Mokhtar, A. H., & Yusof, A. (2013). Bilateral and unilateral asymmetries of isokinetic strength and flexibility in male young professional soccer players. Journal of human kinetics, 36, 45-53. https://doi.org/10.2478/hukin-2013-0005
Śliwowski, R., Jadczak, Ł., Hejna, R., & Wieczorek, A. (2015). The Effects of Individualized Resistance Strength Programs on Knee Muscular Imbalances in Junior Elite Soccer Players. PloS one, 10(12), e0144021. https://doi.org/10.1371/journal.pone.0144021
Lehnert, M., Croix, M. S., Xaverova, Z., Botek, M., Varekova, R., Zaatar, A., Lastovicka, O., & Stastny, P. (2018). Changes in Injury Risk Mechanisms after Soccer-Specific Fatigue in Male Youth Soccer Players. Journal of human kinetics, 62, 33-42. https://doi.org/10.1515/hukin-2017-0157
Ceroni, D., Martin, X. E., Delhumeau, C., & Farpour-Lambert, N. J. (2012). Bilateral and gender differences during single-legged vertical jump performance in healthy teenagers. Journal of strength and conditioning research, 26(2), 452-457. https://doi.org/10.1519/JSC.0b013e31822600c9
Ros, A. G., Holm, S. E., Fridén, C., & Heijne, A. I. (2013). Responsiveness of the one-leg hop test and the square hop test to fatiguing intermittent aerobic work and subsequent recovery. Journal of strength and conditioning research, 27(4), 988-994.
Edouard, P., Branco, P., & Alonso, J. M. (2016). Muscle injury is the principal injury type and hamstring muscle injury is the first injury diagnosis during top-level international athletics championships between 2007 and 2015. British journal of sports medicine, 50(10), 619-630. https://doi.org/10.1136/bjsports-2015-095559
Jones, A., Jones, G., Greig, N., Bower, P., Brown, J., Hind, K., & Francis, P. (2019). Epidemiology of injury in English Professional Football players: A cohort study. Physical therapy in sport: official journal of the Association of Chartered Physiotherapists in Sports Medicine, 35, 18-22. https://doi.org/10.1016/j.ptsp.2018.10.011
Smpokos, E., Mourikis, C., Theos, C., & Linardakis, M. (2019). Injury prevalence and risk factors in a Greek team’s professional football (soccer) players: a three consecutive seasons survey. Research in sports medicine (Print), 27(4), 439-451. https://doi.org/10.1080/15438627.2018.1553779
Kalata, M., Maly, T., Hank, M., Michalek, J., Bujnovsky, D., Kunzmann, E., & Zahalka, F. (2020). Unilateral and Bilateral Strength Asymmetry among Young Elite Athletes of Various Sports. Medicina (Kaunas, Lithuania), 56(12), 683. https://doi.org/10.3390/medicina56120683
Maly, T., Zahalka, F., & Mala, L. (2016). Unilateral and ipsilateral strength asymmetries in elite youth soccer players with respect to muscle group and limb dominance. Int. J. Morphol., 34, 1339-1344. https://doi.org/S0717-95022016000400027
Hewitt, J., Cronin, J., & Hume, P. (2012). Multidirectional leg asymmetry assessment in sport. Strength & Cond Journal, 34, 82-86.
Fort-Vanmeerhaeghe, A., Bishop, C., Buscà, B., Aguilera-Castells, J., Vicens-Bordas, J., & Gonzalo-Skok, O. (2020). Inter-limb asymmetries are associated with decrements in physical performance in youth elite team sports athletes. PloS one, 15(3), e0229440. https://doi.org/10.1371/journal.pone.0229440
Marques, V. B., Medeiros, T. M., de Souza Stigger, F., Nakamura, F. Y., & Baroni, B. M. (2017). The Functional Movement Screen (FMS™) in elite young soccer players between 14 and 20 years: composite score, individual-test scores and asymmetries. International journal of sports physical therapy, 12(6), 977-985.
Atkins, S. J., Bentley, I., Hurst, H. T., Sinclair, J. K., & Hesketh, C. (2016). The Presence of Bilateral Imbalance of the Lower Limbs in Elite Youth Soccer Players of Different Ages. Journal of strength and conditioning research, 30(4), 1007-1013. https://doi.org/10.1519/JSC.0b013e3182987044
Maloney, S. J. (2019). The Relationship Between Asymmetry and Athletic Performance: A Critical Review. Journal of strength and conditioning research, 33(9), 2579-2593. https://doi.org/10.1519/JSC.0000000000002608
Rush, J. L., Norte, G. E., & Lepley, A. S. (2020). Limb differences in hamstring muscle function and morphology after anterior cruciate ligament reconstruction. Physical therapy in sport : official journal of the Association of Chartered Physiotherapists in Sports Medicine, 45, 168-175. https://doi.org/10.1016/j.ptsp.2020.06.012
Sherman, D. A., Rush, J. L., Glaviano, N. R., & Norte, G. E. (2021). Hamstrings Muscle Morphology After Anterior Cruciate Ligament Reconstruction: A Systematic Review and Meta-Analysis. Sports medicine (Auckland, N.Z.). https://doi.org/10.1007/s40279-021-01431-y
Loturco, I., Nakamura, F. Y., Kobal, R., Gil, S., Pivetti, B., Pereira, L. A., & Roschel, H. (2016). Traditional Periodization versus Optimum Training Load Applied to Soccer Players: Effects on Neuromuscular Abilities. International journal of sports medicine, 37(13), 1051-1059. https://doi.org/10.1055/s-0042-107249
Owen A.L., Dunlop G., Rouissi M., Haddad M., Mendes B., & Chamari K. (2016). Analysis of positional training loads (ratings of perceived exertion) during various-sided games in European professional soccer players. International Journal of Sports Science & Coaching, 11(3), 374-381.
Mendiguchia, J., Alentorn-Geli, E., & Brughelli, M. (2012). Hamstring strain injuries: are we heading in the right direction? British journal of sports medicine, 46(2), 81-85. https://doi.org/10.1136/bjsm.2010.081695

This work is licensed under a Creative Commons Attribution 4.0 International License.
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).