Reliability of Concentric, Eccentric and Isometric Knee Extension and Flexion when using the REV9000 Isokinetic Dynamometer

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The aim of this study was to assess the reliability of isokinetic and ISO knee extensor and flexor muscle strength when using the REV9000 (Technogym) isokinetic dynamometer. Moreover, the reliability of several strength imbalance indices and bilateral ratios were also examined. Twenty-four physically active healthy subjects (age 23±3 years) underwent three testing sessions, two on the same day and a third, 7 days later. All sessions proceeded in the same order: five concentric contractions at 60ºs-1 followed by an isometric contraction (5 seconds) and five eccentric contractions (60ºs-1). The results of this study showed a high reproducibility in eccentric (0.95-0.97), concentric (0.95- 0.96) and isometric (0.93-0.96), isokinetic strength for knee extensor and flexor muscles, thus indicating that the REV9000 isokinetic dynamometer can be used in future sports performance studies. A low-to-moderate reliability was found in the isokinetic strength bilateral ratios while the Hamstring:Quadricep concentric ratio showed moderate reliability. The highest reliability (>0.90) was observed in the dynamic control ratio (Hamstring eccentric:Quadricep concentric) which consequently confirms that it is a more valid indicator for imbalanced reciprocal parameters and can be used in rehabilitation and sports medicine.

Aagaard P, Simonsen EB, Trolle M, Bangsbo J, Klausen K. Isokinetic Hamstring Quadriceps Strength Ratio - Influence from Joint Angular Velocity, Gravity Correction and Contraction Mode. Acta PhysiologicaScandinavica, 1995; 154(4): 421-427

Anthony D. Understanding Advanced Statistics, a Guide for Nurses and Health Care Researchers: Churchill Livingstone; 1999

Atkinson G, Nevill AM. Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine. Sports Med, 1998; 26(4): 217-238

Bandy WD, Mclaughlin S. Intramachine and Intermachine Reliability for Selected Dynamic Muscle Performance Tests. J Orthop Sport Phys, 1993; 18(5): 609-613

Bardis C, Kalamara E, Loucaides G, Michaelides M, Tsaklis P. Intramachine and intermachine reproducibility of concentric performance: A study of the Con-Trex MJ and the Cybex Norm dynamometers. Isokinet Exerc Sci, 2004; 12(2): 91-97

Beckerman H, Roebroeck ME, Lankhorst GJ, Becher JG, Bezemer PD, Verbeek ALM. Smallest real difference, a link between reproducibility and responsiveness. Qual Life Res, 2001; 10(7): 571-578

Beckerman H, Vogelaar TW, Lankhorst GJ, Verbeek ALM. A criterion for stability of the motor function of the lower extremity in stroke patients using the Fugl-Meyer assessment scale. Scand J Rehabil Med, 1996; 28(1): 3-7

Blacker SD, Fallowfield JL, Bilzon JLJ, Willems MET. Within-day and between-days reproducibility of isokinetic parameters of knee, trunk and shoulder movements. Isokinet Exerc Sci, 2010; 18(1): 45-55

Brown LE, Weir JP. Accurate assessment of muscular strength and power. Journal of Exercise Physiology, 2001; 4(3): 1-21

Capranica L, Battenti M, Demarie S, Figura F. Reliability of isokinetic knee extension and flexion strength testing in elderly women. J Sport Med Phys Fit, 1998; 38(2): 169-176

Cotte T, Ferret JM. Comparative study of two isokinetics dynamometers: CYBEX NORM vs CON-TREX MJ. Isokinet Exerc Sci, 2003; 11(1): 37-43

Croisier JL. Factors associated with recurrent hamstring injuries. Sports Med, 2004; 34(10):681-695

Dauty M, Potiron-Josse M, Rochcongar P. Identification of previous hamstring muscle injury by isokinetic concentric and eccentric torque measurement in elite soccer player. Isokinet Exerc Sci, 2003; 11(3): 139-144

Dauty M, Rochcongar P. Reproducibility of concentric and eccentric isokinetic strength of the knee flexors in elite volleyball players. Isokinet Exerc Sci, 2001; 9(2-3): 129-132

Feiring D, Ellenbecker T, Dercheid G. Test-Retest reliability of the Biodex isokinetic dynamometer. J OrthopSport Phys, 1990; 11(7): 298-300

Germanou E, Beneka A, Malliou P, Tsiganos G, Papalexandris S, Bikos C, Godolias G. Reproducibility of concentric isokinetic strength of the knee extensors and flexors in individuals with mild and moderate osteoarthritis of the knee. Isokinet Exerc Sci, 2007; 15(3): 151-164

Gleeson NP, Mercer TH. Reproducibility of Isokinetic Leg Strength and Endurance Characteristics of Adult Men and Women. Eur J Appl Physiol O, 1992; 65(3): 221-228

Hsu A, Tang P, Jan M. Test-retest reliability of isokinetic muscle strength of the lower extremities in patients with stroke. Arch Phys Med Rehab, 2002; 83(8): 1130-1137

Iga J, George K, Lees A, Reilly T. Reliability of assessing indices of isokinetic leg strength in pubertal soccer players. Pediatr Exerc Sci, 2006; 18(4): 436-445

Impellizzeri FM, Bizzini M, Rampinini E, Cereda F, Maffiuletti NA. Reliability of isokinetic strength imbalance ratios measured using the Cybex NORM dynamometer. Clin Physiol Funct I, 2008; 28(2): 113-119

Kannus P. Isokinetic Evaluation of Muscular Performance - Implications for Muscle Testing and Rehabilitation. Int J Sports Med, 1994; 15: S11-S18

Keays SL, Bullock-Saxton JE, Newcombe P, Keays AC. The relationship between knee strength and functional stability before and after anterior cruciate ligament reconstruction. J Orthopaed Res, 2003; 21(2): 231-237

Kellis E, Baltzopoulos V. Isokinetic Eccentric Exercise. Sports Med, 1995; 19(3): 202-222

Kuruganti U, Seaman K. The bilateral leg strength deficit is present in old, young and adolescent females during isokinetic knee extension and flexion. European journal of applied physiology, 2006; 97(3): 322-326

Li RCT, Wu Y, Maffulli N, Chan KM, Chan JLC. Eccentric and concentric isokinetic knee flexion and extension: A reliability study using the Cybex 6000 dynamometer. Brit J Sport Med, 1996; 30(2): 156-160

Lund H, Sondergaard K, Zachariassen T, Christensen R, Bulow P, Henriksen M, Bliddal H. Learning effect of isokinetic measurements in healthy subjects, and reliability and comparability of Biodex and Lido dynamometers. Clin Physiol Funct I, 2005; 25(2): 75-82

Maffiuletti NA, Bizzini M, Desbrosses K, Babault N, Munzinger U. Reliability of knee extension and flexion measurements using the Con-Trex isokinetic dynamometer. Clin Physiol Funct I, 2007; 27(6): 346-353

Ordway NR, Hand N, Briggs G, Ploutz-Snyder LL. Reliability of knee and ankle strength measures in an older adult population. J Strength Cond Res, 2006; 20(1): 82-87

Orri JC, Darden GF. Technical report: Reliability and validity of the iSAM 9000 isokinetic dynamometer. JStrength Cond Res, 2008; 22(1): 310-317

Sleivert GG, Wenger HA. Reliability of Measuring Isometric and Isokinetic Peak Torque, Rate of Torque Development, Integrated Electromyography, and Tibial Nerve-Conduction Velocity. Arch Phys MedRehab, 1994; 75(12): 1315-1321

Sole G, Hamren J, Milosavljevic S, Nicholson H, Sullivan SJ. Test-retest reliability of isokinetic knee extension and flexion. Arch Phys Med Rehab, 2007; 88(5): 626-631

Stuchlikova I. Statistics in kinesiology - Vincent,WJ. Cesk Psychol, 1995; 39(6): 568-569

Tredinnick TJ, Duncan PW. Reliability of Measurements of Concentric and Eccentric Isokinetic Loading. PhysTher, 1988; 68(5): 656-659

Weir JP. Quantifying test-retest reliability using the intraclass correlation coefficient and the SEM. J StrengthCond Res, 2005; 19(1):231-240

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