The Left Hand Second to Fourth Digit Ratio (2D:4D) Does Not Discriminate World-Class Female Gymnasts from Age Matched Sedentary Girls
Open Access
- 29 June 2012
- journal article
- research article
- Published by Public Library of Science (PLoS) in PLOS ONE
- Vol. 7 (6), e40270
- https://doi.org/10.1371/journal.pone.0040270
Abstract
The second to fourth-digit-ratio (2D:4D), a putative marker of prenatal androgen action and a sexually dimorphic trait, has been suggested to be related with sports performance, although results are not univocal. If this relation exists, it is most likely to be detected by comparing extreme groups on the continuum of sports performance. In this study the 2D:4D ratio of world-class elite female artistic gymnasts (n = 129), competing at the 1987 Rotterdam World-Championships was compared to the 2D:4D ratio of sedentary age-matched sedentary girls (n = 129), alongside with other anthropometric characteristics including other sexually dimorphic traits such as an androgyny index (Bayer & Bayley) and Heath-Carter somatotype components (endomorphy, mesomorphy, ectomorphy) using AN(C)OVA. 2D:4D was measured on X-rays of the left hand. Left hand 2D:4D digit ratio in world class elite female gymnasts (0.921±0.020) did not differ significantly from 2D:4D in age-matched sedentary girls (0.924±0.018), either with or without inclusion of potentially confounding covariates such as skeletal age, height, weight, somatotype components or androgyny index. Height (161.9±6.4 cm vs 155.4±6.6 cm p0.01), somatotype components (4.0/3.0/2.9 vs 1.7/3.7/3.2 for endomorphy (p<0.01), mesomorphy (p<0.01) and ectomorphy (p<0.05) respectively) all differed significantly between sedentary girls and elite gymnasts. As expressed by the androgyny index, gymnasts have, on average, broader shoulders relative to their hips, compared to the reference sample. Correlations between the 2D:4D ratio and chronological age, skeletal age, and the anthropometric characteristics are low and not significant. Although other anthropometric characteristics of sexual dimorphism were significantly different between the two samples, the present study cannot discriminate sedentary girls from world-class female gymnasts by means of the left hand 2D:4D ratio.Keywords
This publication has 35 references indexed in Scilit:
- Varsity athletes have lower 2D:4D ratios than other university studentsJournal of Sports Sciences, 2012
- Right–left digit ratio (2D:4D) and maximal oxygen uptakeJournal of Sports Sciences, 2012
- Digit ratio (2D:4D) and performance in elite rugby playersJournal of Sports Sciences, 2010
- The 2D:4D digit ratio is not a useful marker for prenatal famine exposure: Evidence from the Dutch hunger winter families studyAmerican Journal of Human Biology, 2010
- Prenatal programming of sporting success: Associations of digit ratio (2D:4D), a putative marker for prenatal androgen action, with world rankings in female fencersJournal of Sports Sciences, 2009
- Digit ratios (2D:4D) determined by computer‐assisted analysis are more reliable than those using physical measurements, photocopies, and printed scansAmerican Journal of Human Biology, 2009
- Second-to-fourth digit ratio predicts success among high-frequency financial tradersProceedings of the National Academy of Sciences, 2009
- The Big Finger: the second to fourth digit ratio is a predictor of sporting ability in women * CommentaryBritish Journal of Sports Medicine, 2006
- Heritability of the Second to Fourth Digit Ratio (2d:4d): A Twin StudyTwin Research and Human Genetics, 2006
- Anthropometric characteristics of outstanding male and female gymnastsJournal of Sports Sciences, 1991