Exercise to lower blood pressure: isometrics, weights and cardio
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An analysis of 270 trials ranked isometric exercise, and specifically the wall squat, as the type that lowers systolic blood pressure the most. How much each type of exercise lowers it, the 4 × 2-minute protocol, whether weights are dangerous with high blood pressure and what precautions to take.
In 2023, Jamie Edwards and Jamie O'Driscoll of Canterbury Christ Church University published the largest analysis to date on exercise and blood pressure: 270 randomised trials with 15,827 participants. Every type of exercise lowered resting blood pressure, but the one that came out on top was not running or swimming. It was isometric exercise, that is, holding a position under tension without moving, with an average drop of 8.24 mmHg in systolic and 4.00 in diastolic pressure.
Within isometrics, the most effective for systolic pressure was one you can do in your hallway: the wall squat, also called the wall sit. Here is how much each type of exercise lowers blood pressure, how to do the isometric protocol and what precautions to take with weights if you already have high blood pressure.
Which type of exercise lowers blood pressure the most
| Type of exercise | Systolic (mmHg) | Diastolic (mmHg) | Rank for systolic |
|---|---|---|---|
| Isometric | -8.24 | -4.00 | 1st |
| Combined (cardio and strength) | -6.04 | -2.54 | 2nd |
| Dynamic resistance (weights) | -4.55 | -3.04 | 3rd |
| Aerobic | -4.49 | -2.53 | 4th |
| High-intensity intervals | -4.08 | -2.50 | 5th |
For diastolic pressure, the most effective specific mode was running. The practical reading is simple: everything counts, and you do not have to choose. Combining cardio and strength came second, and an isometric block of a few minutes fits into any routine without taking extra time.
It was not the first time this result appeared. Ten years earlier, the meta-analysis by Cornelissen and Smart (2013), with 93 trials and 5,223 participants, already pointed to isometrics as having the greatest potential, with a 10.9 mmHg drop in systolic pressure, although at the time only 5 groups had been studied with that method.
What the studied isometric protocol looks like
In the trial by Wiles, Goldring and Coleman (2017), 28 healthy men did wall squats at home 3 times a week for 4 weeks, with 48 hours between sessions. Each session was 4 bouts of 2 minutes with 2 minutes of rest, at a knee angle set so that the heart rate approached its maximum by the end. Systolic pressure fell by 4 mmHg and diastolic by 3, and resting heart rate dropped by 5 beats per minute, which explained most of the improvement.
| Variable | In the study | At home |
|---|---|---|
| Frequency | 3 sessions a week, 48 hours apart | Monday, Wednesday and Friday, for example |
| Bouts | 4 of 2 minutes | The same |
| Rest | 2 minutes | The same, standing and walking |
| Intensity | Knee angle set in the lab using heart rate | An angle at which the last 30 seconds of each bout are very hard |
| Total time | About 14 minutes | The same |
Keep breathing throughout the bout. The isometric works through sustained tension, not by holding your breath. If you find yourself holding your breath to last, slide a little higher up the wall and reduce the angle.
Are weights dangerous if you have high blood pressure?
The concern has a real basis. In 1985, MacDougall and his team measured, with a catheter in the artery, the blood pressure of five experienced bodybuilders while they lifted. In the double-leg press, mean peaks reached 320/250 mmHg, and in one participant they exceeded 480/350. Even in the single-arm biceps curl taken to failure, they reached 255/190. Part of that rise was due to the Valsalva manoeuvre, holding your breath while straining.
These are peaks lasting seconds and they do not describe what happens in the long run. In the long run, weight training lowers resting blood pressure. The meta-analysis by MacDonald and Pescatello (2016), with 64 studies and 2,344 participants, found an average drop of 3.0 mmHg in systolic and 2.1 in diastolic pressure with moderate-intensity strength training, about 3 times a week for about 14 weeks. And the higher the starting blood pressure, the bigger the drop.
| Starting blood pressure | Approximate drop (systolic / diastolic) |
|---|---|
| Hypertension | ≈6 / 5 mmHg |
| Prehypertension | ≈3 / 3 mmHg |
| Normal | ≈0 / 1 mmHg |
How to lift with high blood pressure
- Breathe on every rep: breathe out on the way up and in on the way down, without holding it for the whole set.
- Leave reps in reserve: MacDougall's peaks were higher as lifters approached failure. Ending each set 2-3 reps short of failure reduces that risk; we explain it in training to failure.
- Prefer moderate loads and more reps to one-rep max attempts.
- Get up slowly after lying or seated exercises.
Cardio still works
The position stand of the American College of Sports Medicine (ACSM), signed by Linda Pescatello in 2004, states that endurance exercise lowers blood pressure by about 5-7 mmHg in people with hypertension, both after a single session and after weeks of training, and that the drop can last up to 22 hours after the session. Brisk walking is the easiest way to start: if you want a version with intervals, Japanese interval walking has good data, and if you prefer a steady pace, see zone 2 cardio.
A sample week to lower blood pressure
| Day | Session |
|---|---|
| Monday | Full-body strength + 4 × 2 minutes of wall squat |
| Tuesday | Brisk walking for 30-45 minutes |
| Wednesday | 4 × 2 minutes of wall squat |
| Thursday | Full-body strength |
| Friday | Cardio + 4 × 2 minutes of wall squat |
| Weekend | One long walk and one rest day |
Precautions before you start
- Do not stop your medication on your own: exercise complements it, it does not replace it, and any change is your doctor's decision.
- Get assessed if you plan to train hard: according to the ACSM, people with controlled hypertension and no cardiovascular or kidney disease can train, but with evaluation and monitoring. In men over 45 and women over 55 planning a vigorous programme, a prior exercise test may be warranted.
- In the meantime, start moderately: the same position stand considers moderate-intensity walking reasonable while that assessment is completed.
You can create your strength routine with the Progrevia generator, which sets the reps in reserve for each exercise: with high blood pressure, stay at the upper end of that range, avoid sets to failure and add the isometric block at the end of the session. If you are also over 40, you may find the gym routine for over-40s useful, and if you live with type 2 diabetes, see type 2 diabetes and strength training.
- Edwards JJ, Deenmamode AHP, Griffiths M, et al. Exercise training and resting blood pressure: a large-scale pairwise and network meta-analysis of randomised controlled trials. British Journal of Sports Medicine. 2023;57(20):1317-1326.
- Cornelissen VA, Smart NA. Exercise training for blood pressure: a systematic review and meta-analysis. Journal of the American Heart Association. 2013;2(1):e004473.
- MacDonald HV, Johnson BT, Huedo-Medina TB, et al. Dynamic resistance training as stand-alone antihypertensive lifestyle therapy: a meta-analysis. Journal of the American Heart Association. 2016;5(10):e003231.
- Wiles JD, Goldring N, Coleman D. Home-based isometric exercise training induced reductions resting blood pressure. European Journal of Applied Physiology. 2017;117(1):83-93.
- MacDougall JD, Tuxen D, Sale DG, Moroz JR, Sutton JR. Arterial blood pressure response to heavy resistance exercise. Journal of Applied Physiology. 1985;58(3):785-790.
- Pescatello LS, Franklin BA, Fagard R, et al. American College of Sports Medicine position stand. Exercise and hypertension. Medicine & Science in Sports & Exercise. 2004;36(3):533-553.
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Frequently asked questions
What is the best exercise to lower blood pressure?
In the analysis by Edwards (2023), with 270 trials, isometric exercise lowered systolic pressure the most: 8.24 mmHg on average. It was followed by combined cardio and strength, weights, aerobic exercise and intervals. They all worked.
How do you do the wall squat for blood pressure?
In the study by Wiles (2017): 4 bouts of 2 minutes with 2 minutes of rest, 3 times a week and 48 hours between sessions. At home, pick a knee angle at which the last 30 seconds are very hard and keep breathing throughout.
Can I lift weights if I have hypertension?
Yes, with controlled hypertension and no cardiovascular or kidney disease, according to the ACSM, and with medical follow-up. In the long run weights lower blood pressure; during the set, breathe, avoid failure and prefer moderate loads.
How long does exercise take to lower blood pressure?
A single cardio session can lower it for up to 22 hours, according to the ACSM. In the wall squat study, the drop at rest appeared within 4 weeks, and in weight-training studies the programmes lasted about 14 weeks on average.
Does exercise replace blood pressure medication?
No. Exercise complements it and can help control blood pressure, but any change to your medication is your doctor's decision.
Informational content based on the available scientific evidence: it does not replace advice from a healthcare professional. If you have an injury or a medical condition, or are pregnant, check with one before changing your training or diet.
