Left-hand and Left-foot use apply the same way when it comes to brain function. The right side of the brain is more often used naturally when you are naturally left sided with a limb.
If we take a look at left-footed players, we have Messi, Maradona, Robben, Bale, Ozil, Sturridge, van Persie. What do these player's have in common (especially the first couple of names)? They have good first touch, ball control, and dribbling. They easily go through channels and through opponents. Why is this? Because their sense of spatial awareness as well as risk taking, creativity, and imagination is more developed. If Messi were left-footed he wouldn't be the same player he is and you could argue that Cristiano Ronaldo and Ribery had to train harder than Bale and Robben to get to where they were because the latter two have a more naturally sense of spatial awareness which has to do with several technical aspects as well as mental.
Then look at the top goalkeepers right now. We have Casillas, Cech, Courtois, and Lloris. They are left-footed, and they also happen to be top shot stoppers because they are good at reading the ball trajectory and positioning themselves accordingly. This has to do with spatial awareness.
Look at Jan Vertonghen and Mamadou Sakho for instance. The happen to be CB's who are good on the ball and can get out of tight situations with ball control. They are both left-footed.
In a way this can explain why there is a strong lack of good leftbacks in football. Right now the top leftbacks at the moment are Alaba and Alba. Alaba started his career as a left midfielder and then van Gaal moved him back to leftback due to injuries in the squad. Alba was originally a left winger in Valencia. As young left-footed players develop, it is more efficient to have them as midfielders than leftbacks because they possess qualities that are more useful for midfielders (spatial awareness, creativity, imagination, risk-taking). This is probably why Bale and Nagatomo were eventually moved up to the midfielder and why Zanetti eventually started to be used as a CDM (alongside Cambiasso who is also a left-footed player).
So I believe to take FM to another more realistic level this physiological aspect of human behavior should be taken into account. Perhaps left footed player's should have a hidden boost in things like ball control, technique, creativity, and dribbling. Perhaps in other stuff as well.
Opinions?
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