The relationship between second-to-fourth digit ratio (2D:4D), muscle strength and body composition to bone mineral density in young women

Arazi, Hamid; Eghbali, Ehsan

doi:10.26582/k.51.2.8

Cited by 2 publications

(1 citation statement)

References 47 publications

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“…Muscular performance plays a decisive role when reaching the objective in sports competition (Aikawa et al, 2020). Muscle strength, a basic physical ability regularly developed in athletes regardless of level and sporting experience, is related to 2D:4D in both women and men (Arazi & Eghbali, 2019). It has been observed a negative relationship between muscle power output (e.g., jump tests or reaction times) and 2D:4D (Hsu et al, 2018;Tambe et al, 2017).…”

Section: Specificmentioning

confidence: 99%

Variation of Digit Ratio (2d:4d) in Athletes and Differences With Sports Groups

Ramos¹,

García²,

Zuluaga³

et al. 2023

J. Sport Health Res.

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El objetivo de este estudio fue determinar la variación y asociación del índice digital (2D: 4D) de los atletas de la mano derecha (2D: 4DR), mano izquierda (2D: 4DL), el valor medio (2D: 4DM) y la asimetría (2D: 4DA) en diferentes disciplinas deportivas. 1178 atletas de 25 disciplinas deportivas y 29 países se agruparon en cuatro categorías de deportes: Resistencia (n = 267, 22,7%), Potencia (n= 354, 30,1%), Balón (n= 344, 29,2%) y Combate (n= 213, 18,0%). La medición directa de la longitud de los dedos índice y anular de ambas manos se realizó utilizando calibradores digitales electrónicos de precisión. El índice digital se calculó para ambas manos. Los principales resultados fueron: Entre los grupos con la muestra agrupada por sexos, utilizando el ANOVA bidireccional, se encontraron diferencias significativas entre el grupo Balón en comparación a los tres grupos para 2D:4DL y 2D:4DM. En la submuestra de mujeres, el grupo Balón fue significativamente diferente del grupo Resistencia en 2D: 4DR y 2D: 4DM, p= .028, y p= .019, respectivamente; y de los grupos Fuerza y Combate en 2D:4DL y 2D:4DM (p< .01). Dentro de la submuestra de hombres, el grupo Balón fue significativamente diferente de los otros tres grupos en 2D:4DL (p< .01), de los grupos de Resistencia y Fuerza en 2D:4DM (p< .05) y del grupo Combate en 2D:4DA (p= .015). Estos hallazgos sugieren que los deportes de pelota se diferencian de otros deportes en relación con 2D:4D; principalmente en 2D:4DL y 2D:4DM. La no diferencia en 2D:4D entre los grupos de Resistencia, Potencia y Combate apoya la hipótesis de que, además de la carrera de resistencia, otras habilidades están relacionadas con las proporciones de dígitos 2D:4D, estas habilidades pueden involucrar capacidades fisiológicas o características psicológicas. Estos resultados tienen varias implicaciones importantes en la detección y selección de talentos y ayudarán a tomar decisiones sobre los programas de formación.

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Section: Specificmentioning

confidence: 99%

Variation of Digit Ratio (2d:4d) in Athletes and Differences With Sports Groups

Ramos¹,

García²,

Zuluaga³

et al. 2023

J. Sport Health Res.

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Index finger and ring finger ratio (2D:4D) and it\'s correlation with Hypertension and it\'s affects for possibility factors in cardiovascular diseases in North Indian female population

Kumar,

Ali

2024

IJCAP

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Hypertension is a major risk factor for cardiovascular diseases (CVDs) and is a growing concern globally. The 2nd to 4th digit ratio (2D:4D), determined by the relative length of the index and ring fingers, has been linked to prenatal testosterone exposure and potentially cardiovascular health. This study investigates the correlation between 2D:4D ratio and hypertension in a North Indian female population, exploring its potential role as a risk factor for CVDs. A cross-sectional study will be conducted among North Indian females. Participants will be recruited through community outreach and healthcare facilities. Data collection will involve: 1. Demographic information; 2. Blood pressure measurement to identify hypertensive and normotensive individuals; 3. Measurement of the 2nd and 4th finger lengths on both hands to calculate the 2D:4D ratio. The study is expected to reveal a correlation between 2D:4D ratio and hypertension prevalence in the North Indian female population. We hypothesize that females with a lower 2D:4D ratio (indicating higher prenatal testosterone exposure) might exhibit a higher prevalence of hypertension. This finding could suggest a potential association between prenatal hormonal influences and increased risk of CVDs in later life. This study design is cross-sectional, and causality cannot be established. Further longitudinal studies would be needed to explore the cause-and-effect relationship between 2D:4D ratio, hypertension, and CVD development.

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The relationship between second-to-fourth digit ratio (2D:4D), muscle strength and body composition to bone mineral density in young women

Cited by 2 publications

References 47 publications

Variation of Digit Ratio (2d:4d) in Athletes and Differences With Sports Groups

Variation of Digit Ratio (2d:4d) in Athletes and Differences With Sports Groups

Index finger and ring finger ratio (2D:4D) and it\'s correlation with Hypertension and it\'s affects for possibility factors in cardiovascular diseases in North Indian female population

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