Strength Training and Blood Pressure: What 270 Trials Show
The largest analysis ever run on exercise and blood pressure put strength training in the middle of the pack. That’s still a bigger drop than most people expect — and the thing that beat it is not what you’d guess.
270 TRIALS — 15,827 people. Every mode of exercise tested against every other. Strength training dropped resting blood pressure by about 4.5 points over 3.
Blood pressure is the most common thing on the medication lists I see. It is also the one number in this newsletter that people can go and measure themselves this week. Three papers below. The first is the biggest of its kind. The third undercuts a claim I would rather have made, so I’m including it on purpose.
Everything, ranked against everything
British Journal of Sports Medicine, 2023
270 randomized trials. 15,827 people. Aerobic training, interval training, weights, combined programs and isometric holds, all pooled and ranked against each other in one network.
Strength training came out at −4.55 points systolic and −3.04 diastolic, and the result is rock solid statistically. For scale, that is roughly what walking programs deliver, and about what you’d expect from a low dose of some medications.
Here is the part I’d be tempted to leave out: weights did not win. Isometric exercise — holding a position under tension, like a wall sit — came first by a clear margin, at −8.24 systolic. Ranked by mode, dynamic weight training landed third for systolic and second for diastolic.
The authors are careful about their own headline, and so am I. The isometric arm rested on 19 trials against 57 for weights, with no head-to-head comparisons, and they found signs of publication bias in parts of the network. It is the best evidence we have. It is not settled.
Older adults did better than the average, not worse
Frontiers in Physiology, May 2025
14 trials, 704 adults aged 60 and up, all living in their own homes rather than in care. Circuit-style strength training — moving between exercises with short rests — produced −6.10 systolic and −2.88 diastolic. That systolic number is larger than the all-ages figure from study one, not smaller.
They also found something about dose that is worth acting on. Training more than three times a week beat two or fewer for systolic pressure. For diastolic, the difference wasn’t big enough to call real.
Two honest limits. The authors rate the quality of the underlying studies as low, and they couldn’t test for publication bias at all — too few studies. And eight of the fourteen studied only women, so this transfers to the men on this list less confidently than I’d like.
The claim I had to throw away
Frontiers in Cardiovascular Medicine, 2026
I was going to tell you that lifting makes your arteries less stiff. It is a common claim and it sounds right. This paper is the reason I’m not saying it.
20 trials in adults with high blood pressure or weight-related vascular risk. At first pass, arterial stiffness did improve — a small effect, but statistically significant. Then the authors ran the obvious test: strip out the gadget studies (handgrip devices, vibration plates, breathing trainers) and look only at people actually lifting. The benefit vanished. Twice, under two different levels of strictness.
What did survive was a real improvement in how the lining of the blood vessels responds — though even that weakened under the strictest test, and the authors say the effect may be overstated by publication bias.
So: the blood pressure number goes down. That much is solid across all three papers. The claim about artery stiffness does not hold up, and you should be suspicious of anyone who tells you otherwise.
Matt's take
Four and a half points sounds like nothing. It isn’t. Population-wide, a shift that size is the difference between a lot of strokes happening and not happening. And unlike a medication, it arrives attached to stronger legs, better balance and more muscle. You are not choosing between lifting and your prescription — nobody here should stop a medication because of a newsletter — but you are choosing whether the lifting is in there at all.
The honest bit about study one. Isometrics beat weights, and there is a version of this newsletter where I quietly skip that because I sell strength training. Two things are true at once: the isometric evidence is thinner than the weights evidence, and it still won. If your blood pressure is the thing you care about most, a wall sit is worth knowing about — which is exactly why the safety note below matters.
If you’re at a desk all day: the dose that showed up in study two is more than three sessions a week. Not longer sessions — more of them. This is the same argument I made back in Issue 14: frequency beats duration, and three thirty-minute sessions will do more for this number than one heroic ninety-minute one. Go and measure your blood pressure at home, sitting, twice, a few minutes apart, before you decide whether you have a problem. A single reading in a doctor’s office is a famously bad way to find out.
If you’re on blood pressure medication: this is the paragraph that changes what I do with you. The American Heart Association’s guidance is explicit that people on these medications need an extended cooldown — the risk isn’t pressure going too high during, it’s pressure dropping too far when you stop suddenly and stand up. So we finish slowly and you don’t bolt off the last set. Second: breathe. Holding your breath under load spikes pressure hard and it is the single most common thing I correct. Exhale on the effort, every rep, no exceptions.
The reassuring part, and it surprised me: in trials of people with existing coronary disease, across 23 studies, aerobic training and testing accounted for 63 cardiovascular complications. Resistance training accounted for one. Lifting, coached properly, is the gentler of the two on the heart. And it works at loads far lighter than people assume — even 20 percent of maximum improves strength after a cardiac event. Bands, light dumbbells and body weight all count.
On wall sits, before anyone tries one: isometric holds work by raising your pressure sharply during the hold. That is the mechanism, not a side effect. They are specifically cautioned against in uncontrolled high blood pressure, unstable heart disease, or after a recent cardiac event, and the research groups recommend the first sessions be supervised. If you want to add them, tell me and we’ll do it together — don’t start on your own off the back of an article.
If you have a cardiac history, a stent, a pacemaker, an aortic valve issue, or your physician has given you a heart rate ceiling or a lifting limit, tell me and we build around it. I’m a strength coach, not your physician. I’d rather have your doctor’s number in writing than guess well.
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This article first ran in the Forged Home Fitness weekly newsletter. It is general fitness education, not medical advice, and does not replace your physician.
