Relationship between Facial Musculinity and Digit Ratio (2D:4D) Among Hausa Taxi and Tricycle Drivers in Kano Metropolis, Niger

Authors

  • Isyaku Ibrahim Human Anatomy Department, Faculty of Basic Medical Sciences, Yusuf Maitama Sule University Kano, Nigeria.
  • Anas Ibrahim Yahaya Anatomy Department, Faculty of Basic Medical Sciences, Bayero University Kano, Nigeria.
  • Mikail Isyaku Umar Department of Human Anatomy, Federal University, Dutse, Jigawa State, Nigeria.
  • Muhammad Alhaji Buba Human Anatomy Department, Faculty of Basic Medical Sciences, Yusuf Maitama Sule University Kano, Nigeria
  • Emmanuel Ifeanyi Obeagu Department of Medical Laboratory Science, Kampala International University, Uganda. https://orcid.org/0000-0002-4538-0161

DOI:

https://doi.org/10.22270/ajdhs.v3i3.49

Keywords:

Facial masculinity, 2D:4D (Digit ratio), Photographic methods, Correlation

Abstract

Studies have recognized an association between 2D: 4D ratios and testosterone-dependent traits. The aim of the present study is to determine the relationship of 2D: 4D and facial masculinity.  Four hundred and two (402) subjects were selected from the two association in Kano state (Tsaya da Kafarka Taxi Drivers Association and Tricycle Operators Association Kano (TOAKAN), using random sampling methods, the age range of the participants between 18-50 years. The lengths of the 2nd and 4th digits were determined by a direct method of measurement. Photographic approaches were used to capture the face, facial masculinity was derived from facial distances (captured image face). We use several approaches of measuring facial masculinity to study the association with digit ratio. The data were expressed as mean ± SD, Pearson correlation was used to quantify the relationships between the 2D: 4D and facial masculinity. None of the facial masculine- measures correlated with both right and left 2D:4D ratios.

Keywords: Facial masculinity, 2D:4D (Digit ratio), Photographic methods, Correlation

Author Biographies

Isyaku Ibrahim, Human Anatomy Department, Faculty of Basic Medical Sciences, Yusuf Maitama Sule University Kano, Nigeria.

Human Anatomy Department, Faculty of Basic Medical Sciences, Yusuf Maitama Sule University Kano, Nigeria.

Anas Ibrahim Yahaya, Anatomy Department, Faculty of Basic Medical Sciences, Bayero University Kano, Nigeria.

Anatomy Department, Faculty of Basic Medical Sciences, Bayero University Kano, Nigeria.

Mikail Isyaku Umar, Department of Human Anatomy, Federal University, Dutse, Jigawa State, Nigeria.

Department of Human Anatomy, Kampala International University, Uganda

Muhammad Alhaji Buba, Human Anatomy Department, Faculty of Basic Medical Sciences, Yusuf Maitama Sule University Kano, Nigeria

Human Anatomy Department, Faculty of Basic Medical Sciences, Yusuf Maitama Sule University Kano, Nigeria

Emmanuel Ifeanyi Obeagu, Department of Medical Laboratory Science, Kampala International University, Uganda.

Department of Medical Laboratory Science, Kampala International University, Uganda.

References

Manning JT. Digit ratio: a pointer to fertility, behaviour and health. New Brunswick, NJ: Rutgers University Press. 2002.

Burriss RP, Little AC, Nelson EC. 2D:4D and sexually dimorphic facial characteristics. Archives of Sexual Behavior, 2007; 36(3):377–384. https://doi.org/10.1007/s10508-006-9136-1

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; 13:3000–3004. https://doi.org/10.1093/humrep/13.11.3000

McIntyre MH, Ellison PT, Lieberman DE, Demerath E, Towne B. The development of sex differences in digital formula from infancy in the Fels Longitudinal Study. Proceedings of the Royal Society B: Biological Sciences, 2005; 272:1473- 1479. https://doi.org/10.1098/rspb.2005.3100

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: 22–28. https://doi.org/10.1016/j.earlhumdev.2003.12.002

Mazur A, Booth A. Testosterone and dominance in men. In Behavioral and Brain Sciences, 1998; 21:353-363. https://doi.org/10.1017/S0140525X98001228

Angulu R, Tapamo JR, Adewumi AO. Age estimation via face images: a survey. In Eurasip Journal on Image and Video Processing, 2018; 42:3-35 https://doi.org/10.1186/s13640-018-0278-6

Anas IY. The influence of Age, Sex and Facial size on Facial Asymmetry in Hausa Population of Kano and Kaduna States, Nigeria. Journal of Anatomy and Physiological Studies, 2019; 3:001-005.

Enlow DH. Essential of facial growth. Saunders Company; Philadelphia, 1996; 281-293.

Sisk CL, Zehr JL.Pubertal hormones organize the adolescent brain and behavior. In Frontiers in Neuroendocrinology, 2005; 26:163–174. https://doi.org/10.1016/j.yfrne.2005.10.003

Schulz KM, Zehr JL, Sales-ramirez KY, Sisk CL. Testosterone programs adult social behavior before and during, but not after adolescent. Endocrinology, 2009; 150: 3690-3698.

Zitzmann M, Nieschlag E. Testosterone levels in healthy men and the relation to behavioural and physical characteristics: Facts and constructs. In European Journal of Endocrinology, 2001; 144:183–197. https://doi.org/10.1530/eje.0.1440183

Weston EM, Friday AE, Liò P. Biometric evidence that sexual selection has shaped the hominin face. PLoS ONE, 2007; 2:1–8. https://doi.org/10.1371/journal.pone.0000710

Danel D, Pawlowski B. Eye-mouth-eye angle as a good indicator of face masculinization, asymmetry, and attractiveness (Homo sapiens). Journal of Comparative Psychology, 2007; 121:221–225. https://doi.org/10.1037/0735-7036.121.2.221

Van S, Sprengers E. Hand Grip Strength in Relation to Morphological Measures of Masculinity, Fluctuating Asymmetry and Sexual Behaviour in Males and Females. In Sex Hormones, 2012; 293–306. https://doi.org/10.5772/25880

Hennessy RJ, McLearie S, Kinsella A, Waddington JL. Facial surface analysis by 3D laser scanning and geometric morphometrics in relation to sexual dimorphism in cerebral-craniofacial morphogenesis and cognitive function. In Journal of Anatomy, 2005; 207:285- 93. https://doi.org/10.1111/j.1469-7580.2005.00444.x

Penton-Voak IS, Jones BC, Little AC, Baker S, Tiddeman B, Burt DM, Perrett DI. Symmetry, sexual dimorphism in facial proportions and male facial attractiveness. Proceedings of the Royal Society B: Biological Sciences, 2001; 268(1476):1617–1623. https://doi.org/10.1098/rspb.2001.1703

Nute SJ, Orth M, Moss JP, Orth D. Three-dimensional facial growth studied by optical surface scanning. Journal of Orthodontics, 2000; 27:31–38.

Scheib JE, Gangestad SW, Thornhill R. Facial attractiveness, symmetry and cues of good genes. Proceedings of the Royal Society B: Biological Sciences, 1999; 266(1431):1913–1917. https://doi.org/10.1098/rspb.1999.0866

Pound N, Penton-Voak IS, Surridge AK. Testosterone responses to competition in men are related to facial masculinity. Proceedings of the Royal Society B: Biological Sciences, 2009; 276:153–159. https://doi.org/10.1098/rspb.2008.0990

Koehler N, Simmons LW, Rhodes G. How well does second-to-fourth-digit ratio in hands correlate with other indications of masculinity in males? Proceedings of the Royal Society of London, Series B, 2004; 271:S296–S298. https://doi.org/10.1098/rsbl.2004.0163

Meindl K, Windhager S, Wallner B, Schaefer K. Second-to-fourth digit ratio and facial shape in boys: The lower the digit ratio, the more robust the face. Proceedings of the Royal Society B: Biological Sciences, 2012; 279(1737):2457-2463. https://doi.org/10.1098/rspb.2011.2351

Snodell F, Nanda RS, Currier GF. A longitudinal cephalometric study of transverse and vertical craniofacial growth. American Journal of Orthodontics and Dentofacial Orthopedics, 1993; 104:471–483.

Iloeje NP. A new geography of Nigeria. New Revised Edition. Longman Nigeria PLC.2001; 200.

Barau AS. The Great Attractions of Kano. Research and Documentation publications. Research and Documentation Directorate. Government House Kano, 2007; 33-0.

Moorrees CFA. Natural head position-a revival. American Journal of Orthodontics and Dentofacial Orthopedics, 1994; 105(5):512-513. https://doi.org/10.1016/S0889-5406(94)70014-1

Ferrario VF, Sforza C, Miani A, Tartaglia G. Craniofacial morphometry by photographic evaluations. American Journal of Orthodontics and Dentofacial Orthopedics, 1993; 103(4): 327-37. https://doi.org/10.1016/0889-5406 (93)70013-E

Meiyappan N, Tamizharasi S, Sen-thilkumar KP, Janardhanan K. Natural Head Position: An overview. Dental Science, 2015; 7(6):424:427.

Morosini I, De A, C, Peron A, P, L, M., Correia K, R, Moresca R. Study of face pleasantness using facial analysis in standardized frontal photographs. Dental Press Journal of Orthodontics, 2012; 17(5): 24-34. https://doi.org/10.1590/S2176-94512012000500005

Reddy M, Ahuja N, Raghav P, Kundu V, Mishra VA. Computer-assisted Angular Photogrammetric Analysis of the Soft Tissue Facial Profile of North Indian Adults. The Journal of Indian Orthodontic Society, 2011; 45(3):119-123. https://doi.org/10.5005/jp-journals-10021-1021

Farkas LG. Anthropotry of the Head and Face (L. G. Farkas (ed.); 2nd ed.). Raven press,1994. New York: Raven Press, 1994; 3–56.

Porter JP, Olson KL.Anthropometric facial analysis of the African American woman. Archives of Facial Plastic Surgery : Official Publication for the American Academy of Facial Plastic and Reconstructive Surgery, Inc. and the International Federation of Facial Plastic Surgery Societies, 2001; 3:191–7. https://doi.org/10.1001/archfaci.3.3.191

Gibelli D, Mapelli A, Obertovà Z, Poppa P, Gabriel P, Ratnayake M et al. Age changes of facial measurements in European young adult males: Implications for the identification of the living. HOMO- Journal of Comparative Human Biology, 2012; 63(6):451–458. https://doi.org/10.1016/j.jchb.2012.08.002

Adamu LH, Ojo SA, Danborno B, Adebisi SS, Taura MG. Sex determination using facial linear dimensions and angles among Hausa population of Kano State, Nigeria. Egyptian Journal of Forensic Sciences, 2016; 6(4):459–467.

Carré JM, McCormick CM. In your face: Facial metrics predict aggressive behaviour in the laboratory and in varsity and professional hockey players. Proceedings of the Royal Society B: Biological Sciences, 2008; 275(1651):2651–2656. https://doi.org/10.1098/rspb.2008.0873

Sanchez-Pages S, Rodriguez-Ruiz C, Turiegano E. Facial masculinity: How the choice of measurement method enables to detect its influence on behaviour. PLoS ONE, 2014; 9(11). https://doi.org/10.1371/journal.pone.0112157

Aldridge K, Boyadjiev SA, Capone GT, DeLeon VB, Richtsmeier JT. Precision and error of three-dimensional phenotypic measures acquired from 3dMD photogrammetric images. American Journal of Medical Genetics, 2005; 138:247-53. https://doi.org/10.1002/ajmg.a.30959

Perini TA, Oliveira GL, dos Santos OJ, Palha de OF.Technical error of measurement in anthropometry. Revista Brasileira de Medicina Do Esporte, 2005; 11:86–90. https://doi.org/10.1590/s1517-86922005000100009

Weinberg SM, Scott NM, Neiswanger K, Brandon CA, Marazita ML. Digital three-dimensional photogrammetryevaluation of anthropometric precision and accuracy using a Genex 3D camera system. Cleft Palate Craniofacial Journal 2004; 41(5):507–18.

Landers R. Computing (ICC) as Intraclass Estimates Correlations of Interrater Reliability in SPSS. The Winnower, 2015; https://doi.org/10.15200/winn.143518.81744

Oliveira FD, Lima RT, Daruge J, Andrea S, Silveira D. Sexual Dimorphism in Brazilian Human Skulls: Discriminant Function Analysis.” Journal of forensic odontostomatology, 2012; 30(2):26–33.

Manning JT, Fink B, Neave N, Caswell N. Photocopies yield lower digit ratios (2D:4D) than direct finger measurements. Archives of Sexual Behavior, 2005; 34:329-333. https://doi.org/10.1007/s10508-005-3121-y

Neave N, Laing S, Fink B, Manning JT. Second to fourth digit ratio, testosterone and perceived male dominance. Proceedings of the Royal Society B: Biological Sciences, 2003; 270:2167–2172. https://doi.org/10.1098/rspb.2003.2502

Hennessy RJ, Baldwin PA, Browne DJ, Kinsella A, Waddington JL. Frontonasal dysmorphology in bipolar disorder by 3D laser surface imaging and geometric morphometrics: Comparisons with schizophrenia. Schizophrenia Research, 2010; 122:63-71 https://doi.org/10.1016/j.schres.2010.05.001

Published

15.09.2023

How to Cite

Ibrahim, I. ., Yahaya, A. I. ., Umar, M. I. ., Buba, M. A. ., & Obeagu, E. I. . (2023). Relationship between Facial Musculinity and Digit Ratio (2D:4D) Among Hausa Taxi and Tricycle Drivers in Kano Metropolis, Niger. Asian Journal of Dental and Health Sciences, 3(3), 19–29. https://doi.org/10.22270/ajdhs.v3i3.49

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