CXCL8 and coronary artery disorder: The reductions in both circulating IL‐6 and IL‐8 concentrations are similar to the results of Munk et al. (2011) who measured a reduction in both cytokines in the plasma of patients with CAD following 6 months of HIIT with a similar protocol performed either on a treadmill or cycle ergometer (3 times per week with 4 × 4 min bouts interspersed with 3 min of active rest and some strength and stretching exercises).