The Summary
This Bayesian network meta-analysis of 105 randomized controlled trials evaluated how different exercise types and doses impact blood pressure in adults with prehypertension and hypertension. Researchers discovered that combined training (aerobic plus strength) and high-intensity interval training (HIIT) yielded the most dramatic benefits. Combined training reduced systolic blood pressure by 12.05 mm Hg, while HIIT reduced it by 10.97 mm Hg. Yoga and tai chi had moderate benefits, while aerobic exercise alone was less effective. The optimal exercise dose followed a U-shaped curve, peaking at 830 MET-minutes per week.
Why this is interesting
For years, basic cardio was the default recommendation for hypertension. This study shifts the paradigm, proving that combined training and HIIT are far more powerful for heart health. Crucially, it identifies a 'sweet spot' of around 830 MET-minutes per week—roughly two hours of moderate exercise. Doing too little reduces benefits, but doing too much also decreases effectiveness. For readers, this means optimizing blood pressure does not require endless daily cardio; a structured, time-efficient routine combining strength and high-intensity intervals is the ultimate prescription.