What has already been reported is that balance function is worse in ADHD children than in their normal peers. The studied reviewed here (https://www.ncbi.nlm.nih.gov/pubmed/28238393) was designed to asses the effects of balance exercises on the cognitive performance of children with both ADHD and vestibular impairment.
33 children suffering from severe vestibular impairment were randomly assigned to two groups that were matched for age. Some of the children concerned performed balance, gait and eye movement exercises. The other group of children did not. It was twice a week, for 12 weeks that the chosen children performed the selected exercises.
Specific cognitive tests such as choice reaction time (CRT) and spatial working memory (SWM) were utilized to test for cognitive abilities for both groups.
As far as the CRT test goes, the children who performed the exercises performed significantly better than the children that did not.
Generally speaking, this study illustrates that vestibular rehabilitation can improve cognition.
When looking at the brain pathways involved, it can make sense to think that when the body is lacking balance, it can be harder to recruit brain areas specialized in tasks that relate to cognition. In essence, the body’s number one concern is survival. To secure body stability is primary.