INS and cardiovascular disorder: The main exclusion criteria were: smoking [21, 23, 24, 55, 56, 59–61, 63–65], exogenous insulin [21, 22, 25, 55, 56, 59, 63], beta blockers or arrythmia [19, 21, 23, 25, 52, 55, 56, 59–61, 63, 64], and cardiovascular disease [21, 23–25, 52, 53, 55, 56, 58, 60, 61, 63–66].