Pool workouts beat every other exercise for lowering systolic blood pressure

Exercise is one of the first things prescribed for raised blood pressure, but the advice usually stops at 'be more active'. Which type of exercise lowers blood pressure most, and how much of it per week delivers the biggest effect, has remained surprisingly unsettled. With many modalities now studied, from cycling to yoga-style mind-body practice to isometric holds, the question is no longer whether exercise helps but which prescription helps most. This review set out to rank the options and model the dose that gets the largest benefit, to support more precise exercise prescription for people with prehypertension and hypertension.

The authors searched PubMed, Web of Science, Embase and the Cochrane Library from inception to December 28, 2025 for randomised controlled trials in adults with prehypertension or stage 1 or stage 2 hypertension. Eligible trials tested structured exercise interventions and reported resting systolic or diastolic blood pressure. In total, 284 trials with 18,750 participants, mean age 56.8 years, were included, covering ten exercise modalities. A Bayesian network meta-analysis compared the modalities against each other, and dose-response modelling estimated the weekly exercise dose linked to the largest blood pressure benefit.

Aquatic exercise achieved the greatest systolic reduction, a mean difference of 10.28 mmHg, and ranked top of the modalities with a cumulative ranking score of 93.26%. Whole-body vibration and cycling also showed favourable systolic estimates. For diastolic pressure, mind-body exercise led with an estimated 4.69 mmHg reduction, with aquatic and isometric exercise also performing well. Dose modelling suggested isometric training delivered its maximal systolic benefit, a modelled 13.52 mmHg reduction, at 750 metabolic equivalent task minutes per week, while aerobic exercise showed its largest modelled diastolic benefit, 7.11 mmHg, at 3600 metabolic equivalent task minutes per week.

This is one of the largest attempts yet to rank exercise types for blood pressure, and it extends earlier evidence that was heavily weighted towards aerobic training. The strong showing for aquatic, mind-body and isometric exercise challenges the default assumption that brisk walking or jogging is automatically the best prescription. The caveats are real, though: many comparisons between modalities are indirect, drawn from modelling rather than head-to-head trials, and the credible intervals around the dose estimates are wide. Direct comparisons and longer trials measuring hard outcomes rather than blood pressure alone remain open needs.

If your blood pressure is creeping up, this is a reason to think broadly about what counts as useful exercise. Water-based workouts, isometric training and mind-body practice all produced meaningful reductions here, in some cases rivalling what medication achieves. It also suggests that the best choice may depend on which number you are trying to move, since different modalities led on systolic versus diastolic pressure. None of this replaces a conversation with a doctor about treatment, but it widens the menu of evidence-backed options considerably.