Tıp fakültesi öğrencilerinde 2./4. el parmak uzunluk oranının vücut yağ dağılımı parametreleri ve el kavrama kuvveti ile olan ilişkisi

Year 2021, , 555 - 565, 30.06.2021

Gülay Açar , Betül Digilli , Abdulselam Sağlam , Aynur Çiçekcibaşı

https://doi.org/10.17826/cumj.855244

Cited By: 4

Abstract

Amaç: Cinsel dimorfik bir özellik olan el ikinci ve dördüncü parmak uzunluk oranının (2P/4P), el kavrama kuvveti (EKK) ve cinsiyete bağlı vücut yağ dağılımı ile ilişkili olan prenatal testosteron seviyesinin güçlü bir göstergesi olduğu bildirilmektedir. Bu çalışmada; tıp fakültesi öğrencilerinde el parmak uzunluk oranı, EKK ve vücut yağ dağılımı parametreleri arasındaki ilişkinin araştırılması amaçlanmıştır.
Gereç ve Yöntem: Bu kesitsel çalışmaya toplam 253 katılımcı (112 erkek, 141 kadın) dahil edildi. İkinci ve dördüncü parmak uzunluğu, boy ve vücut ağırlığı, kol, boyun, bel, kalça çevresi ve EKK gibi antropometrik parametreler ölçüldü. El parmak uzunluk oranına göre gönüllüler üç gruba ayrıldı (> 1, = 1, <1).
Bulgular: Her iki cinsiyette el parmak uzunluk oranı >1 olması, düşük EKK ile ilişkili bulunurken kol, boyun ve bel çevresi geniş olanlarda EKK’nin daha büyük olduğu görüldü. Korelasyon analizine göre her iki elin parmak uzunluk oranı ile boy, EKK, bel/kalça oranı (BKO), kol ve boyun çevresi arasında kuvvetli negatif korelasyon bulunurken, vücut kitle indeksi ile pozitif korelasyon gösterdiği tespit edildi. Sağ ve sol EKK ölçüm sonuçları ile BKO, ağırlık, boy, kol, boyun ve bel çevresi değerleri arasında pozitif korelasyon bulundu.
Sonuç: Erkeklerde testosteron hormonuna bağlı olarak el parmak uzunluk oranı <1’dir ve EKK, BKO, kol ve boyun çevresi daha büyüktür. El parmak uzunluk oranı ile bu parametreler arasındaki ilişki vücut yağ dağılımının tahmin edilmesine katkıda bulunacağını düşünmekteyiz.

Keywords

Vücut kitle indeksi, el parmak oranı, vücut yağ dağılımı, el kavrama kuvveti, tıp fakültesi öğrencisi

The relationship of the digit ratio (2D:4D) with body fat distribution and handgrip strength in medical students

Abstract

Purpose: Digit ratio (2D:4D) is a sexually dimorphic trait, that may be a sign for prenatal testosterone level, which is significantly associated with handgrip strength (HGS) and sex-related body fat distribution. The aim of this study was to explore the association between the 2D:4D, HGS, and body fat distribution parameters in medical students.
Materials and Methods: A total of 253 participants (112 males, 141 females) were involved in this cross-sectional study. Anthropometric parameters, including height and body weight, circumferences of arm, neck, waist, hip, HGS, the length of the second and fourth finger were measured. According to 2D:4D, the volunteers were divided into three groups (>1, =1, <1).
Results: For both genders, 2D:4D>1 was associated with lower HGS, while larger arm, neck, and waist circumferences were associated with higher HGS. Pearson correlation analysis showed that 2D:4D of both hands had a strong negative correlation with height, circumferences of arm and neck, waist-to-hip ratio (WHR), and HGS, whereas it was only positively correlated with body mass index. Right and left HGS were positively correlated with WHR, height, weight, circumferences of arm, neck, and waist.
Conclusion: 2D/4D makes a substantial contribution to our prediction of body fat distribution in terms of the relationship of 2D:4D <1 to an increased HGS, WHR, arm and neck circumference depending on testosterone hormone as in males.

Keywords

Body mass index, digit ratio, body fat distribution, handgrip strength, medical student

References

• 1. 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. Ann Hum Biol. 2003;30(6):728-738.
• 2. Manning JT, Fink B. Sexual dimorphism in the ontogeny of second (2D) and fourth (4D) digit lengths, and digit ratio (2D: 4D). Am J Hum Biol. 2018;30(4):e23138.
• 3. Jeevanandam S, Muthu PK. 2D: 4D ratio and its implications in medicine. Journal of clinical and diagnostic research: JCDR. 2016;10(12):CM01.
• 4. Gümüş M, Tutkun E. The Relationship Between Physical Fitness Levels and Digit Ratio (2D: 4D) of High School Students Engaged Actively in Sports. J Educ Train Stud. 2018;6(10):207-212.
• 5. Bakholdina VY, Movsesian AA, Negasheva MA. Association between the digit ratio (2D: 4D) and body fat distribution in Mordovian students. Ann Hum Biol. 2018;45(5):414-418.
• 6. Nanda B, Samanta PP. The second to fourth digit ratio: a measure of handgrip strength. International Journal of Advances in Medicine. 2017;4(5):1250-1254.
• 7. Chang-mo C. Relationships between the Digit Ratio (2D: 4D) and Exercise-Related Physical Fitness Components in Males and Females. Kinesiology. 2020;5:1-10.
• 8. Eler N. Relatıonshıp Between Hand Grip Strength and Finger Ratio (2D: 4D) in 10-12 Age Swimmers. International Journal of Fitness, Health, Physical Education & Iron Games. 2018;5(2):85-94.
• 9. Acar H, Eler N. The relationship of digit ratio (2D: 4D) with cerebral lateralization and grip strength in elite swimmers. J Educ Train Stud. 2018;6(4):84-89.
• 10. Tegin C, Canan F, El-Mallakh RS. The 2nd to 4th digit ratios (2D: 4D) in patients with bipolar disorder. J Affect Disord. 2019;259:27-30.
• 11. Akay FE, Duran B, Keyfoğlu MC, Yavuz S. The Relatıonshıp Between Dıgıt Ratıo (2D: 4D) and Cardıovascular Capacıty in Young Adults. Turkish Medical Student Journal. 4(2):25-28.
• 12. Jeevanandam S, Prathibha KM. Measurement Of 2D: 4D ratio and neck circumference in adolescents: Sexual dimorphism and its implications in obesity–A cross sectional study. Endocrine Society of India. 2018;22(6):724.
• 13. Ribeiro Jr E, Neave N, Morais RN, Kilduff L, Taylor S, Butovskaya M et al. Digit ratio (2D: 4D), testosterone, cortisol, aggression, personality and hand-grip strength: Evidence for prenatal effects on strength. Early Hum Dev. 2016;100:21-25.
• 14. Al-Asadi JN. Handgrip strength in medical students: Correlation with body mass index and hand dimensions. Asian J Med Sci. 2018;9(1):21-26.
• 15. Labott BK, Bucht H, Morat M, Morat T, Donath L. Effects of exercise training on handgrip strength in older adults: A meta-analytical review. Gerontology. 2019;65(6):686-698.
• 16. Hidese S, Matsuo J, Ishida I, Hiraishi M, Teraishi T, Ota M et al. Relationship of handgrip strength and body mass index with cognitive function in patients with schizophrenia. Front Psychiatry. 2018;9:156.
• 17. Halil M, Gurel EI, Kuyumcu ME, Karaismailoglu S, Yesil Y, Ozturk ZA et al. Digit (2D: 4D) ratio is associated with muscle mass (MM) and strength (MS) in older adults: Possible effect of in utero androgen exposure. Arch Gerontol Geriatr. 2013;56(2):358-363.
• 18. Pruszkowska-Przybylska P, Sitek A, Rosset I, Sobalska-Kwapis M, Słomka M, Strapagiel D et al. Association of the 2D: 4D digit ratio with body composition among the Polish children aged 6–13 years. Early Hum Dev. 2018;124:26-32.
• 19. Tomkinson JM, Tomkinson GR. Digit ratio (2D: 4D) and muscular strength in adolescent boys. Early Hum Dev. 2017;113:7-9.
• 20. Al-Qattan NM, Al-Kharashi SK, Al-Hindi GK, Dammas NM, Kattan AE, Al-Qattan MM. Hand Pattern Based on Second-to-Fourth Digit Ratio: Its Relationship to Sex, Body Mass Index, and Physical Activity. Plast Reconstr Surg Glob Open. 2019;7(5).
• 21. Garcia-Hermoso A, Correa-Bautista JE, Izquierdo M, Tordecılla-Sanders A, Prıeto-Benavıdes D, Sandoval-Cuellar C et al. Ideal cardiovascular health, handgrip strength, and muscle mass among college students: The fuprecol adults study. The Journal of Strength & Conditioning Research. 2019;33(3):747-754.
• 22. Bagepally BS, Majumder J, Kotadiya S. Association between the 2d: 4d and cardiovascular risk factors: Body mass index, blood pressure and body fat. Early Hum Dev. 2020;151:105193.
• 23. Holubiac IS, Grosu VT. Effect Of Resistance Exercises on Handgrip Strength in Postmenopausal Women With Osteopenia/Osteoporosis. Bulletin of the Transilvania University of Brasov Series IX, Sciences of Human Kinetics. 2020;13(1):213-220.