FWIW these are the only two studies I have seen that "tests" ACV.
https://www.ncbi.nlm.nih.gov/pubmed/29379012
and
Strategies to improve performance and reduce preslaughter ...
	
		
			
		
		
	
				
			https://www.ncbi.nlm.nih.gov/pubmed/29379012
and
Strategies to improve performance and reduce preslaughter ...
	

