I saw a paper awhile ago that compared two cohorts of players, those who practiced head balls and those who did not. Their average IQ differed by nearly 15 points, a whole standard deviation. Causality comes up, Do only smarties avoid unnecessary head balls. Here is a different paper showing an Association w Neuro damage. https://neurosciencenews.com/neurology-brain-abnormality-soccer-concussion-195/
Ok_Analysis_4955 t1_jcsg91m wrote
Reply to A Swedish study found elite male soccer players are 1.5 times more likely to develop neurodegenerative disease compared to population controls. A previous study from Scotland suggested that soccer players were 3.5 times more likely to develop neurodegenerative disease. by Wagamaga
I saw a paper awhile ago that compared two cohorts of players, those who practiced head balls and those who did not. Their average IQ differed by nearly 15 points, a whole standard deviation. Causality comes up, Do only smarties avoid unnecessary head balls. Here is a different paper showing an Association w Neuro damage. https://neurosciencenews.com/neurology-brain-abnormality-soccer-concussion-195/