New Research: Sex-related biological variation and mental toughness in soccer: a 2D:4D digit-ratio study of Type a, Type B and Type C classification across play...

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New Research: Sex-related biological variation and mental toughness in soccer: a 2D:4D digit-ratio study of Type a, Type B and Type C classification across playing positions www.​frontiersin.​org/articles/10.​3389/fnbeh.​2026.​1934922 #FrontiersIn #BehavioralNeuroscience

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