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2015 | 49 | 1 | 195-200

Article title

Knee Muscles Isokinetic Evaluation after a Six-Month Regular Combined Swim and Dry-Land Strength Training Period in Adolescent Competitive Swimmers


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Previous studies demonstrated significant increases in the shoulder internal rotators’ peak torque values and unilateral muscular imbalances of the shoulder rotators after a competitive swim period. However, there are no similar data concerning the knee muscles. The purpose of the current study was to examine the effects of a six-month training period on knee flexor and extensor peak torque values, examine a possible bilateral strength deficit and evaluate the unilateral strength balance in competitive swimmers. Eleven male adolescent swimmers (age: 14.82 ± 0.45 years) were tested for concentric knee extension and flexion peak torque (60°/s) with an isokinetic dynamometer, before and after a regular combined swim and dry-land strength training period. A trend towards greater improvements in the knee extensor compared to flexor muscles peak torque was observed. Furthermore, the bilateral strength deficit remained almost unchanged, whereas unilateral strength imbalance was increased for both limbs. However, all results were nonsignificant (p > 0.05). According to the data presented, a six-month regular combined swim and dry-land strength training period caused non-significant alterations for all the parameters evaluated during isokinetic testing. This study highlights the fact that competitive adolescent swimmers demonstrated unilateral knee strength imbalances throughout a long period of their yearly training macrocycle.









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1 - 12 - 2015
1 - 12 - 2015
30 - 12 - 2015


  • Aristotle University of Thessaloniki School of Physical Education and Sport Sciences, Thermi Thessalonikis, 57001, Thessaloniki, Greece
  • Laboratory of Coaching and Sports Performance, School of Physical Education and Sport Sciences, Aristotle University of Thessaloniki, Greece
  • Laboratory of Exercise Physiology – Ergometry, School of Physical Education and Sport Sciences, Aristotle University of Thessaloniki, Greece
  • Laboratory of Coaching and Sports Performance, School of Physical Education and Sport Sciences, Aristotle University of Thessaloniki, Greece


  • Bak K. The practical management of swimmer's painful shoulder: Etiology, diagnosis, and treatment. Clin J Sport Med, 2010; 20(5): 386-90[Crossref]
  • Baltzopoulos V, Brodie DA. Isokinetic dynamometry. Applications and limitations. Sports Med, 1989; 8(2): 101-116[Crossref]
  • Batalha N, Raimundo A, Carus P, Fernandes O, Marinho D, Silva A. Shoulder rotator isokinetic strength profile in young swimmers. Braz J Kin Human Perf, 2012; 14: 545-553
  • Batalha N, Marmeleira J, Garrido G, Silva AJ. Does a water-training macrocycle really create imbalances in swimmers' shoulder rotator muscles? Eur J Sport Sci, 2014a; doi:10.1080/17461391.2014.908957[WoS][Crossref]
  • Batalha NM, Raimundo AM, Tomas-Carus P, Marques MAC, Silva AJ. Does an in-season detraining period affect the shoulder rotator cuff strength and balance of young swimmers? J Strength Cond Res, 2014b; 28(7): 2054-2062[Crossref]
  • Beach ML, Whitney SL, Dickoff-Hoffman SA. Relationship of shoulder flexibility, strength and endurance to shoulder pain in competitive swimmers. J Orthop Sport Phys Ther, 1992; 16: 262-267[Crossref]
  • Bradic A, Bradic J, Pasalic E, Markovic G. Isokinetic leg strength profile of elite male basketball players. J Strength Cond Res, 2009; 23(4): 1332-1337[WoS]
  • Cardone CP, Ferreira RE, Moura R, Bernhoeft MF. Isokinetic evaluation in the shoulder of the swimming athlete. In: 8th International Symposium on Biomechanics and Medicine in Swimming, Jyvaskyla- Finland, pp. 213-219; 1999
  • Ciullo JV, Stevens GG. The prevention and treatment of injuries to the shoulder in swimming. Sports Med, 1989; 7(3): 182-204[Crossref]
  • Coombs R, Garbutt G. Developments in the use of the hamstring/quadriceps ratio for the assessment of the muscle balance. J Sport Sci Med, 2002; 1: 56-62
  • Dekerle J, King L. Fatigue of the shoulder’s internal rotators following a 200-m all-out swim. In: Mason B, editor. XIIth International Symposium on Biomechanics and Medicine in Swimming. Australian Institute of Sport, Canberra, Australia, pp. 399-404; 2014
  • Deschodt V. Relative contribution of arms and legs in human to propulsion in 25 m sprint front crawl swimming. Eur J Appl Physiol, 1999; 80: 192-199[Crossref]
  • Fousekis K, Τsepis E, Vagenas G. Lower limb strength in professional soccer players: profile, asymmetry, and training age. Sports Sci Med, 2010; 9: 364-373
  • Gerard ES, Caiozzo VJ, Rubin BD, Prietto CA, Davidson DM. Skeletal muscle profiles among elite long, middle, and short distance swimmers. Am J Sports Med, 1986; 14: 77-82[Crossref]
  • Gourgoulis V, Boli A, Aggeloussis N, Toubekis A, Antoniou P, Kasimatis P, Vezos N, Michalopoulou M, Kambas A, Mavromatis G. The effect of leg kick on sprint front crawl performance. J Sports Sci, 2013; doi: 10.1080/02640414.2013.823224[Crossref]
  • Hollander AP, De Groot G, Van Ingen Schenau GJ, Kahman R, Toussaint HM. Contribution of the legs to propulsion in swimming. In: Ungerechts BE, Wilkie K, Reischle K, editors. Swimming Science V. Champaign, Illinois: Human Kinetics Publishers, pp. 39-43; 1988
  • Knapik JJ, Bauman CL, Jones BH, Harris JM, Vaughan L. Preseason strength and flexibility imbalances associated with athletic injuries in female collegiate athletes. Am J Sports Med, 1991; 19: 76-81[Crossref]
  • Maglischo EW. Swimming Fastest. Human Kinetics Publishers; 2003
  • Mameletzi D, Siatras T. Sex differences in isokinetic strength and power of knee muscles in 10-12 year old swimmers. Isokinet Exerc Sci, 2003; 11: 231-237
  • Manou V, Saraslanidis P, Zafeiridis A, Kellis S. Sitting vs. prone position isokinetic strength in elite male and female sprinters: Relationship with sprinting performance. J Hum Movement Stud, 2003; 45(3): 273-290
  • Ozcaldiran Β. Knee Flexibility and Knee muscles isokinetic strength in swimmers and soccer players. Isokinet Exerc Sci, 2008; 16: 55-59
  • Rovere GD, Nichols AW. Frequency associated factors and treatment of breaststrokers’ knee in competitive swimmers. Am J Sports Med, 1985; 13: 99-104[Crossref]
  • Sanders R, Thow J, Fairweather M. Asymmetries in Swimming Where Do They Come from? J Swim Res, 2011; 18: 1-11
  • Secchi LLB, Muratt MD, Ciolac EG, Greve JMD. Knee muscles isokinetic evaluation in short distance elite swimmers: A comparison between symmetric and asymmetric swimming styles. Isokinet Exerc Sci, 2011; 19: 261-264[WoS]
  • Siatras Th, Mameletzi D, Kellis S. Knee flexor:extensor isokinetic ratios in young male gymnasts and swimmers. Pediatr Exerc Sci, 2004; 16(1): 37-43
  • Tol JL, Hamilton B, Eirale C, Muxart P, Jacobsen P, Whiteley R. At return to play following hamstring injury the majority of professional football players have residual isokinetic deficits. Br J Sports Med, 2014; 48(18): 1364-1369[Crossref][WoS]
  • Yoshioka S, Nagano A, Hay DC, Fukashiro S. The effect of bilateral asymmetry of muscle strength on jumping height of the countermovement jump: A computer simulation study. J Sports Sci, 2010; 28: 209-218 [Crossref][WoS]

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