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2016 | 4 | 154-162
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The relationship between digit ratio (2D:4D) and phy sical fitness in boys 7 to 13 years

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The relative lengths of the index finger to the ring finger (2D:4D) is sexually dimorphic. It is believed that the 2D:4D negatively correlates with prenatal testosterone and positively with prenatal estrogen. Low 2D:4D is related to masculine traits such as aggression, physical fitness and performance in different sports. The aim of this study is to investigate the relation ship between the 2D:4D and physical fitness among 7 to 13 year - old boys. 316 boys were selected, all participants were in pre - pubertal stage. After completing the consent by their parents; height, weight, lengths of the index and ring fingers and physical fitness such as: strength, muscle endurance, power, speed, agility, flexibility and aerobic fitness were measured. The partial correlation coefficients was used to determine association between variables. Data analysis was done by SPSS software, version 20 , and the level of significance was considered as P≤0.05. The results showed that the digit (2D:4D) ratio has no significant correlation with handgrip strength and aerobic fitness (P ˃ 0.05). Also, according to the results, no correlation has been observed between the 2D:4D and muscle endurance, power, speed, agility and flexibility (P ˃ 0.05). It seems that 2D:4D is associated with level of testosterone and prenatal estrogen; this index has no significant correlation with physical fitness in children and ca nnot be used to identify and discover talented individuals for various sporting fields. However, more researches are still needed in this area.
  • Department of Exercise Physiology, Faculty of Sport Sciences, Unive rsity of Guilan, Rasht, Iran.
  • 1. Bompa T, Carrera M: Conditioning Young Athletes. Human Kinetics, 2015.
  • 2. Vaeyens R, Lenoir M, Williams AM, Philippaerts RM: Talent identification and development programmes in sport. Sports medicine, 2008; 38(9): 703-714.
  • 3. Mehdizadeh R, Noori Sarhozaki N, Abbasi S: Relationship between second to fourth digit ratio (2D: 4D) and dynamic muscular endurance in trained girl students. International Journal of Sport Studies, 2013; 3(1): 99-104.
  • 4. Abbott A, Button C, Pepping GJ, Collins D: Unnatural selection: Talent identification and development in sport. Nonlinear dynamics, psychology, and life sciences, 2005; 9(1): 61-88.
  • 5. Mohamed H, Vaeyens R, Matthys S, Multael M, Lefevre J, Lenoir M, Philippaerts R: Anthropometric and performance measures for the development of a talent detection and identification model in youth handball. Journal of Sports Sciences, 2009; 27(3): 257-266.
  • 6. Hönekopp J, Manning JT, Müller C: Digit ratio (2D: 4D) and physical fitness in males and females: Evidence for effects of prenatal androgens on sexually selected traits. Hormones and Behavior, 2006; 49(4): 545-549.
  • 7. Peeters MW, Van Aken K, Claessens AL: The left hand second to fourth digit ratio (2D: 4D) is not related to any physical fitness component in adolescent girls. PloS one, 2013; 8(4): e59766.
  • 8. Hönekopp J: Anthropometric Digit Ratio 2D: 4D and Athletic Performance. In Handbook of Anthropometry, Springer New York, 2012; 1857-1864.
  • 9. Giffin NA, Kennedy RM, Jones ME, Barber CA: Varsity athletes have lower 2D: 4D ratios than other university students. Journal of sports sciences, 2012; 30(2): 135-138.
  • 10. Fink B, Neave N, Manning JT: Second to fourth digit ratio, body mass index, waist-to-hip ratio, and waist-to-chest ratio: their relationships in heterosexual men and women. Annals of human biology, 2003; 30(6): 728-738.
  • 11. Arazi H, Eghbali E, Saeedi T, Moghadam R: The Relationship of Physical Activity and Anthropometric and Physiological Characteristics to Bone Mineral Density in Postmenopausal Women. Journal of Clinical Densitometry, 2016.
  • 12. Manning JT, Taylor RP: Second to fourth digit ratio and male ability in sport: implications for sexual selection in humans. Evolution and Human Behavior, 2001; 22(1): 61-69.
  • 13. Pokrywka L, Rachoń D, Suchecka‐Rachoń K, Bitel L: The second to fourth digit ratio in elite and non‐elite female athletes. American Journal of Human Biology, 2005; 17(6): 796-800.
  • 14. Hönekopp J, Schuster M: A meta-analysis on 2D: 4D and athletic prowess: Substantial relationships but neither hand out-predicts the other. Personality and Individual Differences, 2010; 48(1): 4-10.
  • 15. Bennett M, Manning JT, Cook CJ, Kilduff LP: Digit ratio (2D: 4D) and performance in elite rugby players. Journal of sports sciences, 2010; 28(13): 1415-1421.
  • 16. Manning JT, Morris L, Caswell N: Endurance running and digit ratio (2D: 4D): implications for fetal testosterone effects on running speed and vascular health. American Journal of Human Biology, 2007; 19(3): 416-421.
  • 17. Ranson R, Stratton G, Taylor SR: Digit ratio (2D: 4D) and physical fitness (Eurofit test battery) in school children. Early human development, 2015; 91(5): 327-331.
  • 18. Peeters MW, Claessens AL: The left hand second to fourth digit ratio (2D: 4D) does not discriminate world-class female gymnasts from age matched sedentary girls. PloS one, 2012; 7(6): e40270.
  • 19. Manning JT, Scutt D, Wilson J, et al: The ratio of 2nd to 4th digit length: a predictor of sperm numbers and concentrations of testosterone, luteinizing hormone and oestrogen. Human reproduction, 1998 ; 13(11): 3000-3004.
  • 20. Mirwald RL, Baxter-Jones AD, Bailey DA, et al: An assessment of maturity from anthropometric measurements. Medicine and science in sports and exercise, 2002; 34(4): 689-694.
  • 21. American College of Sports Medicine (Ed.): ACSM's health-related physical fitness assessment manual. Lippincott Williams & Wilkins, 2013.
  • 22. Wells KF, Dillon EK: The sit and reach. A test of back and leg flexibility. Research Quarterly, 1952; 23: 115-118.
  • 23. Baquet G, Berthoin S, Gerbeaux M, Van Praagh E: High-intensity aerobic training during a 10 week one-hour physical education cycle: effects on physical fitness of adolescents aged 11 to 16. International journal of sports medicine, 2001; 22(4): 295-300.
  • 24. Manning JT, Hill MR: Digit ratio (2D: 4D) and sprinting speed in boys. American journal of human biology, 2009; 21(2): 210-213.
  • 25. Mahar MT, Guerieri AM, Hanna MS, Kemble CD: Estimation of aerobic fitness from 20-m multistage shuttle run test performance. American journal of preventive medicine, 2011; 41(4): S117-S123.
  • 26. Sayers SP, Harackiewicz DV, Harman EA, Frykman PN, Rosenstein MT: Cross-validation of three jump power equations. Medicine and Science in Sports and Exercise, 1999; 31(4): 572-577.
  • 27. Fox EL, Mathews DK: Interval Training: Conditioning for Sports and General Fitness. Par Edward L. fox Et Donald K. Mathews. Illus. Par Nancy Allison Close. Saunders, 1974.
  • 28. Folland JP, Mc Cauley TM, Phypers C, Hanson B, Mastana SS: Relationship of 2D: 4D finger ratio with muscle strength, testosterone, and androgen receptor CAG repeat genotype. American journal of physical an thropology, 2012; 148(1): 81-87.
  • 29. Van Anders SM: Grip strength and digit ratios are not correlated in women. American Journal of Human Biology, 2007; 19(3): 437-439.
  • 30. Nicolay CW, Walker AL: Grip strength and endurance: Influences of anthropometric variation, hand dominance, and gender. International Journal of Industrial Ergonomics, 2005; 35(7): 605-618.
  • 31. Dragoo JL, Castillo TN, Braun HJ, Ridley BA, Kennedy AC, Golish SR: Prospective correlation between serum relaxin concentration and anterior cruciate ligament tears among elite collegiate female athletes. The American journal of sports medicine, 2011; 39(10): 2175-2180.
  • 32. Voracek M, Loibl LM: Scientometric analysis and bibliography of digit ratio (2D: 4D) research, 1998-2008 1, 2. Psychological reports, 2009; 104(3): 922-956.
  • 33. Manning JT, Scutt D, Wilson J, Lewis-Jones DI: The ratio of 2nd to 4th digit length: a predictor of sperm numbers and concentrations of testosterone, luteinizing hormone and oestrogen. Human reproduction, 1998; 13(11): 3000-3004.
  • 34. Boddy LM, Fairclough SJ, Atkinson G, Stratton G: Changes in cardio respiratory fitness in 9-to 10.9-year-old children: SportsLinx 1998-2010. Med Sci Sports Exerc, 2012;44:481–6.
  • 35.Zhao D, Li B, Yu K, Zheng L: Digit ratio (2D: 4D) and handgrip strength in subjects of Han ethnicity: impact of sex and age. American journal of physical anthropology, 2012; 149(2): 266-271.
  • 36. Fink B, Thanzami V, Seydel H, Manning JT: Original Research Article Digit Ratio and Hand-Grip Strength in German and Mizos Men: Cross-Cultural Evidence for an Organizing Effect of Prenatal Testosterone on Strength. American Journal of Human Biology, 2006; 18: 776-782.
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