Int J Sports Med 2014; 35(12): 994-998
DOI: 10.1055/s-0034-1371833
Training & Testing
© Georg Thieme Verlag KG Stuttgart · New York

Seasonal Changes in Multiple Indices of Body Composition in Professional Football Players

J. Iga
1   Formerly, Medical and Exercise Science Department, Wolverhampton Wanderers Football Club, Wolverhampton,United Kingdom
,
M. Scott
2   Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
,
K. George
2   Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
,
B. Drust
2   Sport and Exercise Science, Liverpool John Moores University, Liverpool, United Kingdom
› Author Affiliations
Further Information

Publication History



accepted after revision 03 February 2014

Publication Date:
09 May 2014 (online)

Abstract

We examined the seasonal variability of indicators of adiposity and generic and population-specific equations of estimating body fat in professional football players. Anthropometric data of 35 outfield players (age, 20±4 years; stature, 1.82±0.06 m; body mass 77.1±7.3 kg) were collected over a playing season. There were a significant main effects for time for all indicators (p<0.001). Post hoc analysis revealed significant changes in body composition between July and mid-August (∑4SF-DW: 1.6 mm, p<0.001; ∑4SF-R: 2.4 mm, p=0.002; ∑5SF: 2.0 mm, p<0.002; ∑8SF: 3.8 mm, p=0.001; Reilly et al.: 0.4%, p=0.001; Durnin and Wormsley: 0.7%, p<0.001). Although all indicators were sensitive to detect small changes in body composition between training mesocycles, we advocate the use of the sum of 4 skinfolds by Reilly et al. to monitor changes in body composition in professional football players; if an estimate of percent body fat is required, the population-specific equation by Reilly et al. may be utilised.

 
  • References

  • 1 Ackland TR, Lohman TG, Sundgot-Borgen J, Maughan RJ, Mayer NL, Stewart AD, Müllert W. Current status of body composition assessment in sport: Review and position statement on behalf of the ad-hoc research working group on body composition health and performance, under the auspices of the I.O.C. Medical Commission. Sports Med 2012; 42: 227-249
  • 2 Atkinson G. Analysis of repeated measurements in physical therapy research. Phys Ther Sport 2001; 2: 194-208
  • 3 Atkinson G, Nevill A. Statistical methods for assessing measurement error (reliability) in variables relevant to sports medicine. Sports Med 1998; 26: 217-238
  • 4 Carling C, le Gall F, Reilly T, Williams AM. Do anthropometric and fitness characteristics vary according to birth date distribution in elite youth academy football players?. Scand J Med Sci Sports 2009; 19: 3-9
  • 5 Carling C, Orhant E. Variation in body composition in professional football players: Inter-seasonal and intra-seasonal changes and the effects of exposure time and playing position. J Strength Cond Res 2010; 24: 1332-1339
  • 6 Durnin JVGA, Womersley J. Body fat assessed from total body density and its estimation from skinfold thickness: measurements of 481 men and women aged from 16–72 years. Br J Nutr 1974; 32: 77-97
  • 7 Durnin JVGA. Skinfold thickness measurement. Br J Nutr 1997; 78: 1042-1043
  • 8 Egan E, Wallace J, Reilly T, Chantler P, Lawlor J. Body composition and bone mineral density during a Premier League season as measured by dual-energy x-ray absorptiometry. Int J Body Compos Res 2006; 4: 61-66
  • 9 Eston RG. Prediction of body fat from skinfolds: the importance of including sites from the lower limb. J Sports Sci 2003; 21: 369-370
  • 10 Eston RG, Rowlands AV, Charlesworth S, Davies A, Hoppitt T. Prediction of DXA-determined whole body fat from skinfolds: importance of including skinfolds from the thigh and calf in young, healthy men and women. Eur J Clin Nut 2005; 59: 695-702
  • 11 Jeong T-S, Reilly T, Morton T, Bae S-W, Drust B. Quantification of the physiological loading of one week of “pre-season” and one week of “in-season” training in professional football players. J Sports Sci 2011; 29: 1161-1166
  • 12 Harriss DJ, Atkinson G. Ethical standards in sports and exercise science research: 2014 update .. Int J Sports Med 2013; 34: 1025-1028
  • 13 Hopkins WG. Measure of reliability in sports medicine and science. Sports Med 2000; 30: 1-15
  • 14 Marfell-Jones M, Olds T, Stewart A, Carter JEL. International Standards for Anthropometric Assessment. Potchesfstroom: International Society for the Advancement of Kinanthropometry 2006; 1-137
  • 15 Reilly T, Maughan RJ, Hardy L. Body fat consensus statement of the steering groups of the British Olympic Association. Sports Exerc Injury 1996; 2: 46-49
  • 16 Reilly T, Williams AM, Nevill A, Franks A. A multidisciplinary approach to talent identification in Football. J Sports Sci 2000; 18: 695-702
  • 17 Reilly T, George K, Marfell-Jones M, Scott M, Sutton L, Wallace JA. How well do skinfold equations predict percent body Fat in elite football players?. Int J Sports Med 2009; 30: 607-613
  • 18 Siri WE. The gross composition of the body. Adv Biol Med Phys 1956; 4: 239-280
  • 19 Winter EM, Maughan RJ. Requirements for ethics approvals. J Sports Sci 2009; 27: 985