Isometric Exercise and Blood Pressure: The Complete Evidence-Based Guide

Isometric exercise holds a position under tension (a wall sit, a plank, a handgrip squeeze) rather than moving a muscle under tension. In the largest comparison to date, a 2023 network meta-analysis of 270 randomised trials, isometric training was associated with the biggest average reduction in resting blood pressure of the five exercise modes compared [1]. This guide covers what that evidence shows, which exercises it actually rests on, protocols the researchers used, what happens to blood pressure during a hold, and how to approach it sensibly.

Five key points:

• All five exercise modes in the 2023 analysis were associated with lower resting blood pressure. Isometric training had the largest average difference (8.24 mmHg systolic and 4.00 mmHg diastolic) [1].
• The clearest evidence is for wall squats and handgrip holds, not for every static exercise.
• Newer reviews point the same way, with a smaller average and a lot of variation between studies [2][3].
• Blood pressure rises sharply while you are actually performing the exercise [4].
• These are averages from structured research programmes, not a forecast for you. Isometric exercise is not a treatment for high blood pressure and is not a substitute for medication or medical advice.

What did the 2023 research find?

A 2023 systematic review and network meta-analysis by Edwards and colleagues in the British Journal of Sports Medicine pooled 270 randomised controlled trials with 15,827 participants and compared five broad exercise modes [1]. The average reductions in resting blood pressure against control were:

• Aerobic exercise: −4.49 mmHg systolic and −2.53 mmHg diastolic
• Dynamic resistance training: −4.55 mmHg systolic and −3.04 mmHg diastolic
• Combined training: −6.04 mmHg systolic and −2.54 mmHg diastolic
• High-intensity interval training: −4.08 mmHg systolic and −2.50 mmHg diastolic
• Isometric exercise training: −8.24 mmHg systolic and −4.00 mmHg diastolic [1]

In the network ranking, isometric training came first of the five modes for systolic blood pressure [1]. When the researchers ranked individual submodes, the wall squat came top for systolic blood pressure and running came top for diastolic [1].

The authors argued the findings justified reconsidering how isometric training features in exercise guidance.

Are these reductions good?

Blood-pressure researchers generally treat a change of about 5 mmHg systolic as the point where an effect becomes clinically meaningful, and eight is comfortably past it so at a population level, yes this is good, which is why the 2023 findings drew so much attention. The best evidence for what a change of that size is worth comes from drug trials rather than exercise trials: a 2021 analysis in The Lancet, pooling data from around 345,000 people, found that each 5 mmHg reduction in systolic blood pressure was associated with roughly a 10 percent lower risk of major cardiovascular events over about four years, whether or not the person started with high blood pressure [7]. That result is about medication, and nobody to date has shown the same evidence for wall sits, but it is the yardstick that makes an 8 mmHg average worth taking seriously.

Bear in mind, this is an average across trials with different populations, baseline readings and protocols; individual responses vary, and some people will show little change [5]. Also, it is not a target or a forecast so interpreting your own numbers is a job for you and your clinician.

What do more recent reviews say?

A 2026 review and meta-analysis in Frontiers in Public Health pooled 40 randomised controlled trials of isometric training across the general population [2]. Its summary states that “Isometric exercise, particularly wall squats performed three times weekly for over 8 weeks, is associated with significant reductions in resting blood pressure. The greatest benefits were observed in males and hypertensive individuals.”

The authors flag those subgroup findings as exploratory, and their own regression found no significant link between programme length, frequency or starting blood pressure and the size of the reduction [2]. The corrected pooled figures were 6.62 mmHg systolic and 2.63 diastolic [3].

Do we know why isometric exercise affects resting blood pressure?

Researchers are still working this out. A 2024 review in Sports Medicine discusses several candidate adaptations, including changes in total peripheral resistance, endothelial function and autonomic control [5]. During a sustained contraction the working muscle squeezes its own blood vessels; when the hold ends, flow surges back. Repeated exposure to that cycle is proposed as one contributor to longer-term vascular change [5].

What protocols did the studies use?

Shorter than most people expect. The 2024 review summarises the best-supported traditional pattern as [5]:

• Four 2-minute holds per session
• 1 to 4 minutes of rest between holds
• Three sessions per week
• Programmes of at least three weeks, most commonly 8 to 12

Wall-squat trials typically set intensity by heart rate (around 95 percent of peak) or, increasingly, by perceived exertion, rather than by prescribing everyone the same knee angle.

The review makes a point that gets lost in simplified versions: the four-by-two-minute protocol has rarely been tested against alternatives and researchers do not know the minimum effective dose or the best mix of intensity, duration and recovery [5]. So four holds of two minutes is a well-established research protocol, not a universal instruction.

Who should be careful when doing isometric exercises?

Two points from Mayo Clinic guidance [6]:

• If you have high blood pressure or any heart condition, check with your doctor before starting isometric exercises.
• Never hold your breath or strain during a hold. Breath-holding can cause a sharp spike in blood pressure. Breathe slowly and steadily throughout every hold.

A 2026 study measured blood pressure continuously during planks and wall sits in 62 healthy adults; almost everyone crossed the study’s diastolic stopping limit within about 50 seconds, with no adverse events reported [4]. That is a normal response to a hard hold, but it is the reason to keep breathing and to check with your doctor first if your blood pressure is already high.

What if I cannot hold a wall sit for two minutes?

You don’t need to. The trials did not validate a beginner progression for blood pressure, so what follows is a general wall-sit progression, the kind any coach would give, not the protocol whose effects were measured. If your reason for doing this is your blood pressure, always run a new protocol past your clinician first.

1. Weeks 1 to 2: three sessions a week of two to three wall sits, 30 to 60 seconds each, at a comfortable knee angle. Focus on steady breathing and clean form.
2. Weeks 3 to 5: build toward four holds of 60 to 90 seconds, with about two minutes of rest between.
3. Week 6 onward: work toward four holds of two minutes, three times a week, at a knee angle where the final 20 seconds feel hard.

A shallower knee angle makes every stage easier. Build gradually, keep breathing, and log the holds so you can see the progression rather than guess at it.

Frequently asked questions

Does isometric exercise lower blood pressure?

Randomised trials of structured isometric training have found lower average resting blood pressure than control groups. In the 2023 meta-analysis the average difference was 8.24 mmHg systolic and 4.00 mmHg diastolic [1]; a 2026 review found 6.62 and 2.63 [3]. Those are group averages from research, not a prediction for an individual, and isometric exercise is not a treatment for high blood pressure.

Are wall sits the best exercise for blood pressure?

In the 2023 network analysis the wall squat ranked highest among individual submodes for systolic blood pressure, and running ranked highest for diastolic [1].

How long, how often, and for how many weeks did the studies train?

The commonly studied pattern is four 2-minute holds with 1 to 4 minutes of rest, three times a week, in programmes of at least three weeks and most often 8 to 12 [5]. The 2026 review’s meta-regression found no significant relationship between programme duration or frequency and the size of the difference [2], and the 2024 review notes the minimum effective dose is still unknown [5].

Is a wall sit or a plank better studied for blood pressure?

The wall squat, by a distance. Planks are isometric, but they were not the basis of most of the training trials.

Can I stop my blood-pressure medication if I start doing wall sits?

No. Never change or stop prescribed medication on your own. Any medication change is a decision for the clinician responsible for your care, whatever exercise you are doing.

The bottom line

There is credible evidence behind the interest in isometric exercise and resting blood pressure. In the largest comparison, isometric training was associated with the largest average reductions of the five modes studied, and the wall squat ranked top among submodes for systolic pressure [1]. Newer reviews find the same direction with a smaller average, wide variation between studies, and real uncertainty over the best protocol [2][3][5]. Blood pressure also climbs sharply during a hold [4], which is one reason a research protocol is not a home prescription for everybody. Short, structured holds are a low-cost, low-equipment habit with real evidence behind it, done with steady breathing and your clinician in the loop if you have any cardiovascular concern.

The part that decides whether any of this applies to you is consistency, which is what Just Hold is for: it keeps the record over the weeks the studies ran for.

This page is for educational purposes only and is not medical advice. It does not diagnose, treat, or manage any condition. If you have high blood pressure, a heart condition, or any health concern, or you are unsure whether to start exercising, speak with your doctor first, and never change prescribed medication without medical advice. Avoid holding your breath or straining during a hold, which can cause a sharp rise in blood pressure.

1. 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.
2. Yan Y, Sun C, Pan L, Ma H, Xie H. Effects of isometric training based on the entire population on blood pressure regulation: systematic review and meta-analysis of randomized controlled trials. Frontiers in Public Health. 2026;14:1774541.
3. Yan Y, Sun C, Pan L, Ma H, Xie H. Correction: Effects of isometric training based on the entire population on blood pressure regulation: systematic review and meta-analysis of randomized controlled trials. Frontiers in Public Health. 2026;14:1866759.
4. Jones MD, Tan E, Woo J, Bui E, Wong R, Fotheringham A, Schutte AE, Parmenter BJ. Acute blood pressure responses to plank and wall sit isometric exercise in adults. Journal of Hypertension. 2026;44(2):288–294.
5. Edwards JJ, Coleman DA, Ritti-Dias RM, et al. Isometric Exercise Training and Arterial Hypertension: An Updated Review. Sports Medicine. 2024;54(6):1459–1497.
6. Mayo Clinic. Isometric exercises: Good for strength training?
7. Rahimi K, Bidel Z, Nazarzadeh M, et al. (Blood Pressure Lowering Treatment Trialists’ Collaboration). Pharmacological blood pressure lowering for primary and secondary prevention of cardiovascular disease across different levels of blood pressure: an individual participant-level data meta-analysis. The Lancet. 2021;397(10285):1625–1636.