Discriminant analysis of finger length ratios in Muay Thai athletes

doi:10.16098/j.issn.0529-1356.2025.05.011

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Acta Anatomica Sinica ›› 2025, Vol. 56 ›› Issue (5) : 594-600. DOI: 10.16098/j.issn.0529-1356.2025.05.011

Anthropology

Discriminant analysis of finger length ratios in Muay Thai athletes

LIANG Zhi-dong^1* YE Yan² CHEN Hui-yu^1,2* WANG Ping¹ REN Yan-dan²

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Abstract

Objective To develop the application technology of finger length ratios in the selection of Muay Thai athletes, and to provide practical guidance for improving the competitive level of Muay Thai. Methods By using the method of snowball sampling and simple random sampling,413 subjects were selected in Bangkok, Thailand, including 84 male Muay Thai professional players, 62 female Muay Thai professional players, 137 ordinary male college students and 130 female college students. The finger length of the subjects was measured and their finger length ratios was calculated. SPSS 20.0 statistical software was used for discriminant analysis. Results The 2D∶3D, 2D∶4D, 2D∶5D,3D∶4D and 3D∶5D of male Muay Thai professional players were significantly lower than that in the general male Thai population, and the 2D∶4D, 3D∶4D and 3D∶5D of female Muay Thai players were significantly lower than that in the general female Thai population, and the above differences were statistically significant (P<0.05). Discriminant functions developed using both the full model and stepwise method were statistically significant, demonstrating high accuracy and stability. The correct discrimination rates were higher in the male population than that in the female population.When distinguishing between Muay Thai professional fighters and the general Thai population, the optimal 2D∶4D threshold for males is 0.951, and for females, it was 0.960. Conclusion The discriminant model of Muay Thai professional players and ordinary people based on the ratios of finger length can provide important reference for the selection of Muay Thai athletes.

Key words

Finger length ratio / Muay Thai / Athletes selection / Discriminant analysis / Anatomic measurement / Adult

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LIANG Zhi-dong YE Yan CHEN Hui-yu WANG Ping REN Yan-dan. Discriminant analysis of finger length ratios in Muay Thai athletes[J]. Acta Anatomica Sinica. 2025, 56(5): 594-600 https://doi.org/10.16098/j.issn.0529-1356.2025.05.011

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