Background Agility is a determinant component in soccer performance. This study aimed to evaluate the reliability and sensitivity of a “Modified Illinois change of direction test” (MICODT) in ninety-five U-14 soccer players. Methods A total of 95 U-14 soccer players (mean ± SD: age: 13.61±1.04 years; body mass: 30.52±4.54 kg; height: 1.57±0.1 m) from a professional and semi-professional soccer academy, participated to this study. Sixty of them took part in reliability analysis and thirty-two in sensitivity analysis. Results The intraclass correlation coefficient (ICC) that aims to assess relative reliability of the MICODT was of 0.99, and its standard error of measurement (SEM) for absolute reliability was <5% (1.24%). The MICODT’s capacity to detect change is “good”, it’s SEM (0.10 s) was ≤ SWC (0.33 s). The MICODT is significantly correlated to the Illinois change of direction speed test (ICODT) (r = 0.77; p<0.0001). The ICODT’s MDC95 (0.64 s) was twice about the MICODT’s MDC95 (0.28 s), indicating that MICODT presents better ability to detect true changes than ICODT. The MICODT provided good sensitivity since elite U-14 soccer players were better than non-elite one on MICODT (p = 0.005; dz = 1.01 [large]). This was supported by an area under the ROC curve of 0.77 (CI 95%, 0.59 to 0.89, p<0.0008). The difference observed in these two groups in ICODT was not statistically significant (p = 0.14; dz = 0.51 [small]), showing poor discriminant ability. Conclusion MICODT can be considered as more suitable protocol for assessing agility performance level than ICODT in U-14 soccer players.
References
[1]
Davids K, Lees A, Burwitz L (2000) Understanding and measuring coordination and control in kicking skills in soccer. Implications for talent identification and skill acquisition. J Sports Sci 18: 703–714. doi: 10.1080/02640410050120087
[2]
Harman E, Rosenstein M, Frykman P, Rosenstein R (1990) The effects of arm and counter-movement on vertical jumping. Med Sci Sports Exerc 22: 825–833. doi: 10.1249/00005768-199012000-00015
[3]
Reilly T, Bangsbo J, Franks A (2000) Anthropometric and physiological predispositions for elite soccer. J Sports Sci 18: 669–683. doi: 10.1080/02640410050120050
[4]
Sheppard JM, Young WB, Doylec TLA, Sheppard TA, Newton RU (2006a) An evaluation of a new test of reactive agility and its relationship to sprint speed and change of direction speed. J Sci Med Sports 9: 342–349. doi: 10.1016/j.jsams.2006.05.019
[5]
Bloomfield JTR, Polman R, O’Donoghue P (2007) Physical demands of different positions in FA premier league soccer. J Sports Sci Med 6: 63–70.
[6]
Haj-Sassi R, Dardouri W, Gharbi Z, Chaouachi A, Mansour H, et al. (2011) Reliability and validity of a new repeated agility test as a measure of anaerobic and explosive power. J Strength Cond Res 25: 472–480. doi: 10.1519/jsc.0b013e3182018186
[7]
Pauole KK, Madole J, Garhammer M, 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. J Strength Cond Res 14: 443–450. doi: 10.1519/1533-4287(2000)014<0443:ravott>2.0.co;2
[8]
Hachana Y, Chaabène H, Nabli MA, Attia A, Moualhi J (2013) et al. Test-retest reliability, criterion-related validity, and minimal detectable change of the Illinois agility test in male team sport athletes. J Strength Cond Res. 27(10): 2752–9. doi: 10.1519/jsc.0b013e3182890ac3
[9]
Draper JA, Lancaster MG (1985) The 505 test: A test for agility in the horizontal plane. Aust J Sci Med Sports 17(1): 15–18.
[10]
Meir R, Newton R, Curtis E, Fardell M, Butler B (2001) Physical fitness qualities of professional rugby league football players: Determination of positional differences. J Strength Cond Res 15: 450–458. doi: 10.1519/1533-4287(2001)015<0450:pfqopr>2.0.co;2
[11]
Little T, Williams AG (2005) Specificity of acceleration, maximum speed, and agility in professional soccer players. J Strength Cond Res 19: 76–78. doi: 10.1519/14253.1
[12]
Brughelli M, Cronin J, Levin G, Chaouachi A (2008) Understanding change of direction ability in sport. Sports Med 38: 1045–1063. doi: 10.2165/00007256-200838120-00007
[13]
Caldwell BP, Peters DM (2009) Seasonal variation in physiological fitness of a semiprofessional soccer team. J Strength Cond Res 23: 1370–1377. doi: 10.1519/jsc.0b013e3181a4e82f
[14]
Hastad DN, Lacy AC (1994) Measurement and evaluation in physical education and exercise science (2nd edn.). Scottsdale, AZ: GorsuchScarisbric.
[15]
Jarvis S, Sullivan LO, Davies B, Wiltshire H, Baker JS (2009) Interrelationships between measured running intensities and agility performance in subelite rugby union players. Res Sports Med 17: 217–30. doi: 10.1080/15438620903323892
[16]
Stewart PF, Turner AN, Miller SC (2012) Reliability, factorial validity, and interrelationships of five commonly used change of direction speed tests. Scand J Med Sci Sports, [Epub ahead of print].
[17]
Vescovi JD, McGuigan MR (2008) Relationships between sprinting, agility, and jump ability in female athletes. J Sports Sci 26: 97–107. doi: 10.1080/02640410701348644
[18]
Castagna C, D’Ottavio S, Abt G (2003) Activity profile of young soccer players during actual match play. J Strength Cond Res 17: 775–780. doi: 10.1519/1533-4287(2003)017<0775:apoysp>2.0.co;2
[19]
Mirwald RL, Baxter-Jones AD, Bailey DA, Beunen GP (2002) An assessment of maturity from anthropometric measurements. Med Sci Sports Exerc 34: 689–694. doi: 10.1097/00005768-200204000-00020
[20]
Hopkins WG (2000) Measures of reliability in sports medicine and science. Sports Med 30: 1–15. doi: 10.2165/00007256-200030010-00001
[21]
Coppieters M, Stappaerts K, Janssens K, Jull G (2002) Reliability of detecting onset of pain and sub-maximal pain during neural provocation testing of the upper quadrant. Physiother Res Int 7: 146–156. doi: 10.1002/pri.251
[22]
Liow DK, Hopkins WG (2003) Velocity specificity of weight training for kayak sprint performance. Med Sci Sports Exerc 35: 1232–1237. doi: 10.1249/01.mss.0000074450.97188.cf
[23]
Faul F, Erdfelder E (2004) GPOWER. A Priori, Post-Hoc, and Compromise Power Analyses for MS-DOS (Computer Program). Bonn, FRG: Bonn University, Department of Psychology.
[24]
Scanlan AT, Dascombe BJ, Reaburn PRJ (2012) The construct and longitudinal validity of the basketball exercise simulation test. J Strength Cond Res 26: 523–530. doi: 10.1519/jsc.0b013e318220dfc0
[25]
Vincent WJ (1999) Statistics in Kinesiology (2nd edition). Champaign, IL: Human Kinetics.
[26]
Impellizzeri FM, Marcora SM (2009) Test Validation in Sport Physiology: Lessons Learned From Clinimetrics. Inter J Sports Physiol Perf 4: 269–277.
[27]
Menespa P, Aldo S, Impellizzeri FM (2010) Aerobic Fitness Variables Do Not Predict the Professional Career of Young Cyclists. Med Sci Sports Exerc 42: 805–812. doi: 10.1249/mss.0b013e3181ba99bc
[28]
Lockie RG, Schultz AB, Callaghan SJ, Jeffriess MD, Berry SP (2013) Reliability and Validity of a New Test of Change-of-Direction Speed for Field- Based Sports: the Change-of-Direction and Acceleration Test (CODAT). J Sports Sci Med 12: 88–96.
[29]
Sheppard JM, Young WB (2006b) Agility literature review: Classifications, training and testing. J Sports Sci 24: 919–932. doi: 10.1080/02640410500457109
[30]
Haj Sassi R, Dardouri W, Haj Yahmed M, Gmada N, Mahfoudi MH, et al. (2009) Relative and absolute reliability of a modified agility T-test and its relationship with vertical jump and straight sprint. J Strength Cond Res 23: 1644–1651. doi: 10.1519/jsc.0b013e3181b425d2
[31]
Lexell JE, Downham DY (2005) How to assess the reliability of measurements in rehabilitation. Am J Physical Med Rehabil 84: 719–23. doi: 10.1097/01.phm.0000176452.17771.20
[32]
Castagna C, Impellizzeri FM, Bizzi M, Weston M, Manzi V (2011) Applicability of a change of direction ability field test in soccer assistant referees. J Strength Cond Res 25: 860–866. doi: 10.1519/jsc.0b013e318208ae8e
[33]
Green BS, Blake C, Caulfield BM (2011) A valid field test protocol of linear speed and agility in rugby union. J Strength Cond Res 25(5): 1256–62. doi: 10.1519/jsc.0b013e3181d8598b
[34]
Farrow D, Young W, Bruce L (2005) The development of a test of reactive agility for netball: A new methodology. J Sci Med Sport 8: 52–60. doi: 10.1016/s1440-2440(05)80024-6
