Also to our knowledge, there have been no study to date which has investigated the comparison of the effects of different RI
between circuit training exercises on post exercise BP. RI length influences the removal of metabolites produced during music contraction. the use of a shorter RI may lead to increased accumulation of metabolites and ions with vasodilator effects ( e.g.
nitric oxide, prostaglandins, adenosine, hydrogen and potassiium ) and this can influence the reduction in periheral vascular
resistance. therfore one might hypothesize that if PEH is mediated by some peripheral factors, resistance exercise with lower RI would be expected to result in a greater decline in BP.