Influence of 2D:4D ratio on fitness parameters and accumulated training load in elite youth soccer players

Table 1 Absolute size characteristic and anthropometric of soccer player by playing positions. Mean ± standard deviation (SD)

Characteristic	Position												P
	GK (n = 3)		FB (n = 5)		CH (n = 4)		CM (n = 4)		WG (n = 5)		FW (n = 3)
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Anthropometric measurements
Age (years)	16.0	0.2	16.2	0.2	16.0	0.3	16.2	0.2	16.0	0.3	16.0	0.2	0.72
Height (cm)	183.0	4.6	174.9	5.4	180.9	4.6	179.8	4.5	173.6	6.2	176.0	5.6	0.13
Body mass (kg)	79.7	10.1	67.4	3.4	75.2^#	5.4	66.0*	3.0	63.1*	5.6	65.6	2.4	0.003^€
BMI (kg/m²)	23.8	3.3	22.0	1.2	22.9	0.6	20.4	0.7	21.0	1.7	21.2	0.6	0.06
Siting height (cm)	96.7	2.1	92.2	2.8	96.5	2.1	92.3	1.3	91.0	4.3	94.0	3.6	0.06
Fingers measurements (cm)
LF-2D	7.9	0.2	7.2	0.7	7.7	0.5	7.9	0.5	7.6	0.3	7.7	0.4	0.27
LF-4D	8.3	0.2	7.5	0.5	8.2	0.5	8.3	0.6	8.1	0.3	8.2	0.4	0.11
LF-2D:4D	0.96	0.01	0.96	0.03	0.94	0.03	0.95	0.02	0.95	0.02	0.95	0.00	0.87
RF-2D	8.0	0.2	7.2	0.7	7.7	0.5	7.9	0.5	7.6	0.2	7.7	0.4	0.25
RF-4D	8.4	0.0	7.5	0.5	8.3	0.5	8.4	0.6	8.1	0.3	8.1	0.5	0.07
RF-2D:4D	0.95	0.02	0.96	0.03	0.94	0.03	0.95	0.02	0.94	0.02	0.95	0.01	0.92
Dif-R-L-Ratio	− 0.011	0.012	− 0.001	0.006	− 0.001	0.002	− 0.002	0.003	− 0.002	0.008	0.002	0.011	0.42

GK Goalkeepers; FW forwards; CM centre-midfielder; CH centre-half; FB fullback; WG winger; BMI body mass index; RF-2D The length of the digit two-finger of the right hand; RF-4D The length of the digit four-finger of the right hand; LF-2D The length of the digit two-finger of the left hand.; LF-4D The length of the digit four-finger of the left hand; Dif-R-L-Ratio Difference right-fingers 2D:4D ratio minus left-fingers 2D:4D ratio
^€Represents a statistically significant difference between groups to one-way ANOVA (p < 0.05)
^*Represents a statistically significant difference compared with goalkeepers (p < 0.05)
^#Represents a statistically significant difference compared with wingers (p < 0.05)

ISSN: 2052-1847