In September 2018 researchers from Brazil and Canada published their review of the medical scientific literature to assess the effectiveness of high-intensity interval training and moderate-intensity continuous training to reduce blood pressure in adults with either pre- or established hypertension. Changes in maximal oxygen uptake between high-intensity interval training and moderate-intensity continuous training were also analyzed. Ambulatory blood pressure was excluded from the analysis due to the limited number of studies. Results showed that high-intensity interval training and moderate-intensity continuous training produced comparable reductions in resting blood pressure in adults with pre- or established hypertension. However, high-intensity interval training improved maximal oxygen uptake to a greater magnitude than moderate-intensity continuous training.
Costa EC et al. Effects of High-Intensity Interval Training Versus Moderate-Intensity Continuous Training On Blood Pressure in Adults with Pre- to Established Hypertension: A Systematic Review and Meta-Analysis of Randomized Trials. Sports Med. 2018 Sep;48(9):2127-2142