The relationship among the digit ratio (2D:4D), physical activity, aggression and sensation seeking in mature and immature boys

Afsharnezhad, Taher; Ayatizadeh Tafti, Farahnaz; Marzi, Ali Asghar; Maleksabet, Nazanin

doi:10.22059/sshr.2023.360016.1094

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	The relationship among the digit ratio (2D:4D), physical activity, aggression and sensation seeking in mature and immature boys
Sport Sciences and Health Research
دوره 14، شماره 2، مهر 2022، صفحه 245-264 اصل مقاله (979.23 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22059/sshr.2023.360016.1094
نویسندگان
Taher Afsharnezhad^* ¹؛ Farahnaz Ayatizadeh Tafti¹؛ Ali asghar Marzi²؛ Nazanin Maleksabet³
¹Assistant Professor of Sports Sciences, Department of Sports Sciences, Faculty of Psychology and Educational Sciences, Yazd University, Yazd, Iran
²M.Sc. in Sports Sciences, Faculty of Physical Education and Sport Sciences, Shomal University, Amol, Iran
³M.Sc. in Sports Sciences, Department of Sports Sciences, Faculty of Psychology and Educational Sciences, Yazd University, Yazd, Iran
چکیده
Background: Digit ratio (2D:4D) is a marker of prenatal androgen exposure that has been associated with behavioral parameters. Individuals with low 2D:4D are more aggressive and tend to engage in more physical activity. Aim: We examined the relationship between 2D:4D and physical activity, sensation seeking and aggression in mature and immature boys. Materials and Methods: The study population consisted of Mazandaran male students aged 9 to 17 years in 2019-2020. The sample was 218 healthy, cluster randomly selected boys (13.77±2.4 y/o) from three schools with no health issues. 2D:4D digit ratio, physical activity, aggression, sensation seeking were measured. Pearson correlation analyzed variable associations. Significance was considered at P≤0.05. Results: Low 2D:4D ratio was associated with higher physical activity (r≈-0.27), sensation seeking (r≈-0.3), and aggression (r≈-0.21), during childhood and adolescence (P<0.05). These relationships among right and left hand 2D:4D ratios with physical activity and sensation seeking remained consistent across maturity levels (P<0.05). Only immature boys had a significant association between 2D:4D ratios and aggression (r≈-0.29, P<0.05). Physical activity was positively associated with sensation seeking (r≈0.25, P<0.05), but not aggression in mature and immature boys. Conclusion: Prenatal testosterone organizes boys' physical activity and behavioral parameters, influencing the later development of sensation-seeking and aggression and greater participation in physical activity. The study has limitations such as a small sample size and a self-report method for assessing aggression. Future research should focus on behavioral observation methods with larger sample sizes.
کلیدواژه‌ها
aggression؛ physical activity؛ prenatal androgen؛ puberty؛ sensation seeking

مراجع
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The relationship among the digit ratio (2D:4D), physical activity, aggression and sensation seeking in mature and immature boys

[1] Mikac U, Buško V, Sommer W, Hildebrandt A. "Analysis of different sources of measurement error in determining second-to-fourth digit ratio, a potential indicator of perinatal sex hormones exposure". Review of Psychology. 2016; 23(1-2): 39-49. doi: 10.21465/rp0023.0004.

[2] Fink B, Neave N, Laughton K, Manning JT. "Second to fourth digit ratio and sensation seeking". Personality and Individual Differences. 2006; 41(7): 1253-62. doi:10.1016/j.paid.2006.05.002.

[3] Lutchmaya S, Baron-Cohen S, Raggatt P, Knickmeyer R, Manning JT. Lutchmaya S, Baron-Cohen S, Raggatt P, Knickmeyer R, Manning JT. "2nd to 4th digit ratios, fetal testosterone and estradiol". Early Human Development. 2004; 77(1-2): 23-8. doi:10.1016/j.earlhumdev.2003.12.002.

[4] Ventura T, Gomes MC, Pita A, Neto MT, Taylor A. "Digit ratio (2D: 4D) in newborns: influences of prenatal testosterone and maternal environment". Early Human Development. 2013; 89(2): 107-12. doi:10.1016/j.earlhumdev.2012.08.009.

[6] Richards G, Browne WV, Constantinescu M. "Digit ratio (2D: 4D) and amniotic testosterone and estradiol: An attempted replication of Lutchmaya et al. (2004)". Journal of Developmental Origins of Health and Disease. 2021; 12(6): 859-64. doi: 10.1017/S2040174420001294.

[7] Morris JA, Jordan CL, Breedlove SM. "Sexual differentiation of the vertebrate nervous system". Nature Neuroscience. 2004; 7(10): 1034-9. doi: 10.1038/nn1325.

[8] Fink B, Manning JT, Neave N. "Second to fourth digit ratio and the ‘big five’ personality factors". Personality and Individual Differences. 2004; 37(3): 495-503. doi: 10.1016/j.paid.2003.09.018.

[9] Perez KL, Boisvert DL, Cooke EM, Connolly EJ, Wells J, Lewis RH, Woeckener M, Armstrong TA. "The association between the 2D: 4D ratio and psychopathic characteristics". Heliyon. 2022; 8(12): e12171.

[10] Motlagh FZ, Jouybari TA, Jalilian F, Alavijeh MM, Aghaei A, Shirazi KK. "The prevalence and factors associated with aggression among adolescences of Yasuj, Iran". Health System Research. 2013; 9(3): 312-9. http://hsr.mui.ac.ir/article-1-606-en.html.

[11] Vigil P, Del Rio JP, Carrera B, Aranguiz FC, Rioseco H, Cortés ME. "Influence of sex steroid hormones on the adolescent brain and behavior: An update". The Linacre Quarterly. 2016; 83(3): 308-29. doi: 10.1080/00243639.2016.1211863.

[12] Bailey AA, Hurd PL. "Digit length ratio (2D: 4D) correlates with physical aggression in men but not in women". Biological Psychology. 2005; 68(3): 215-22. doi:10.1016/j.biopsycho.2004.05.001.

[13] Butovskaya M, Burkova V, Karelin D, Fink B. "Digit ratio (2D: 4D), aggression, and dominance in the Hadza and the Datoga of Tanzania". American Journal of Human Biology. 2015; 27(5): 620-7. doi: 10.1002/ajhb.22718.

[14] Butovskaya M, Burkova V, Karelin D, Filatova V. "The association between 2D: 4D ratio and aggression in children and adolescents: cross-cultural and gender differences". Early Human Development. 2019; 137: 104823. doi: 10.1016/j.earlhumdev.2019.07.006.

[16] Turanovic JJ, Pratt TC, Piquero AR. "Exposure to fetal testosterone, aggression, and violent behavior: A meta-analysis of the 2D: 4D digit ratio". Aggression and Violent Behavior. 2017; 33: 51-61. doi: 10.1016/j.avb.2017.01.008.

[17] Hilgard J, Engelhardt CR, Rouder JN, Segert IL, Bartholow BD. "Null effects of game violence, game difficulty, and 2D: 4D digit ratio on aggressive behavior". Psychological Science. 2019; 30(4): 606-16. doi: 10.1177/0956797619829688.

[18] Joyner B, Beaver KM. "Evaluating the potential association between prenatal exposure to testosterone and criminal involvement and criminogenic traits". American Journal of Criminal Justice. 2021; 46: 232-49. doi: 10.1007/s12103-020-09542-4.

[19] Voracek M, Tran US, Dressler SG. "Digit ratio (2D: 4D) and sensation seeking: New data and meta-analysis". Personality and Individual Differences. 2010; 48(1): 72-7. doi:10.1016/j.paid.2009.08.019.

[20] Campbell BC, Dreber A, Apicella CL, Eisenberg DT, Gray PB, Little AC, Garcia JR, Zamore RS, Lum JK. "Testosterone exposure, dopaminergic reward, and sensation-seeking in young men". Physiology & Behavior. 2010; 99(4): 451-6. doi:10.1016/j.physbeh.2009.12.011.

[21] Kerschbaum HH, Ruemer M, Weisshuhn S, Klimesch W. "Gender-dependent differences in sensation seeking and social interaction are correlated with saliva testosterone titre in adolescents". Neuroendocrinology Letters. 2006; 27(3): 315-20. PMID: 16807524 NEL270306A04.

[22] 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): 327-31. doi: 10.1016/j.earlhumdev.2015.03.005.

[23] 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): 545-9. doi: 10.1016/j.yhbeh.2005.11.006.

[25] 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. doi: 10.1371/journal.pone.0059766.

[26] Koziel S, Kociuba M, Chakraborty R, Ignasiak Z. "Physical fitness and digit ratio (2D: 4D) in male students from Wrocław, Poland". Collegium Antropologicum. 2017; 41(1): 31-7. https://hrcak.srce.hr/180637.

[27] Pasanen BE, Tomkinson JM, Dufner TJ, Park CW, Fitzgerald JS, Tomkinson GR. "The relationship between digit ratio (2D: 4D) and muscular fitness: A systematic review and meta‐analysis". American Journal of Human Biology. 2022; 34(3): e23657. doi: 10.1002/ajhb.23657.

[28] Tso MK, Rowland B, Toumbourou JW, Guadagno BL. "Overweight or obesity associations with physical aggression in children and adolescents: A meta-analysis". International Journal of Behavioral Development. 2018; 42(1): 116-31. doi: 10.1177/0165025417690265.

[29] Visnapuu M, Jürimäe T. "Handgrip strength and hand dimensions in young handball and basketball players". The Journal of Strength & Conditioning Research. 2007; 21(3): 923-9. doi: 10.1519/15334287(2007)21[923:HSAHDI]2.0.CO;2.

[30] Rabbani A, Noorian S, Fallah JS, Setoudeh A, Sayarifard F, Abbasi F. "Reliability of pubertal self assessment method: an Iranian study". Iranian Journal of Pediatrics. 2013; 23(3): 327. PMID: 23795257; PMCID: PMC3684479.

[31] Amirkhanloo A, Dousti Y, Donyavi R. "Comparing the effectiveness of cognitive-behavioral therapy with emotional intelligence training on reducing aggression among adolescents with conduct disorder". 2022; 9(1): 25-35. doi: 10.22037/ch.v9i1.31323.

[33] http://ijem.sbmu.ac.ir/article-1-1404-en.html.

[35] 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. doi :10.1016/j.paid.2009.08.009.

[36] Stoyanov Z, Marinov M, Pashalieva I. "Digit length ratio (2D: 4D) in left-and right-handed males". International Journal of Neuroscience. 2009; 119(7): 1006-13. doi:10.1080/03008200802323883.

[37] Tomkinson JM, Tomkinson GR. "Digit ratio (2D: 4D) and muscular strength in adolescent boys". Early Human Development. 2017; 113:7-9. doi: 10.1016/j.earlhumdev.2017.07.013.

[38] Kociuba M, Kozieł S, Chakraborty R, Ignasiak Z. "Sports preference and digit ratio (2D: 4D) among female students in Wrocław, Poland". Journal of Biosocial Science. 2017; 49(5): 623-33. doi: 10.1017/S0021932016000523.

[39] Ramos S, García A, Ayala F, Álzate D, Aguirre-Loaiza H. "Variation of digit ratio (2D: 4D) in athletes and differences with sports groups. Journal of Sport & Health Research. 2022; 14(3): 453-464. doi: 10.58727/jshr.87631.

[40] de Dios Benítez-Sillero J, Corredor-Corredor D, Portela-Pino I, Raya-González J. "Relationships between birth weight, breastfeeding and digit ratio with physical activity and physical fitness in school adolescents". Kinesiology. 2022; 54(2): 316-24. doi: 10.26582/k.54.2.13.

[41] Austin EJ, Manning JT, McInroy K, Mathews E. "A preliminary investigation of the associations between personality, cognitive ability and digit ratio". Personality and Individual Differences. 2002; 33(7): 1115-24. doi: 10.1016/S0191-8869(02)00002-8.

[43] Lynne-Landsman SD, Graber JA, Nichols TR, Botvin GJ. "Is sensation seeking a stable trait or does it change over time?". Journal of Youth and Adolescence. 2011; 40: 48-58. doi: 10.1007/s10964-010-9529-2.

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