Wall squats are not anyone’s idea of a thrilling workout. You lean your back against a wall, bend your knees, and hold still while your thighs start filing complaints. Yet a new trial suggests that this stubborn little exercise may do something useful for blood pressure.
Researchers at Canterbury Christ Church University in the United Kingdom enrolled 100 adults who didn’t regularly exercise in an eight-week study of wall squats at home.
Published in BMJ Open Sport & Exercise Medicine, the trial tackled a surprisingly practical question: once exercise starts making a difference, how often must you keep doing it to keep that benefit?
The answer sounds appealing to anyone with a crowded calendar. Some participants maintained improvements with just one session a week. Still, that result comes with an easy-to-miss condition, and it doesn’t mean everyone can start with a once-weekly routine.
The details of how the researchers changed the schedule matter.
A Month Of Squats, Then A Fork In The Road
Everyone who exercised started the same way, which is what makes the second month so revealing.
The study, published September 29, randomly assigned 20 people to a control group and 80 to four exercise groups. During the first four weeks, everyone assigned to exercise completed three sessions a week, each involving four wall-squat holds separated by two minutes of seated rest.
Researchers measured blood pressure, heart rate, and other cardiovascular markers at the start, week four, and week eight.
By the first checkpoint, all four exercise groups had significantly lower systolic pressure (the top number), diastolic pressure (the bottom number), and mean arterial pressure (the average pressure across a heartbeat) than controls. Systolic pressure was 9.45 mmHg lower on average than in the control group.
Easing Off Kept Some Of The Gains
How much survived depended on how many sessions stayed on the calendar.
Then came the real test. During weeks five through eight, the four groups continued at three, two, or one session a week, or stopped exercising altogether.
By week eight, systolic pressure in the three-session group had fallen 13.73 mmHg from baseline, the largest reduction and roughly double that seen with the lighter schedules. The twice-weekly group recorded a 6.95 mmHg drop; the once-weekly group, 6.56 mmHg. Both still had significantly lower systolic and mean arterial pressure than controls.
After four weeks without wall squats, however, the group that stopped had blood-pressure readings no different from controls.
Three sessions also preserved improvements in total peripheral resistance, a measure of blood vessel resistance, and heart rate variability, the changing intervals between heartbeats.
That frequency, the researchers say, may achieve the largest reductions and maintain the widest range of changes.
Related: 9 Overhyped Vegetables That Won’t Fix Your Blood Pressure Fast
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The Catch Behind The Once-A-Week Result
Dropping to one session only worked because of what came first.
Before switching to a lighter schedule, the once-weekly group had completed four weeks of training three times a week. No one was tested on a once-weekly routine from the start, so the trial can’t tell us whether that would work.
There was another limit to the improvements. By week eight, diastolic pressure was no longer significantly lower than controls in any exercise group, including those still training three times a week.
Even so, the researchers see an advantage for people who struggle to fit exercise into their week. They say lower-frequency training may offer “a pragmatic option for individuals with limited time or adherence challenges.”
What These Results Don’t Cover
The volunteers were a specific group, and the findings reach only as far as they do.
Participants averaged 37 years old. They were nonsmokers, had no injuries or illnesses, had never taken blood-pressure medication, and did not have hypertension. Their systolic readings ranged from normal to high-normal under the classification used in the study.
So the trial doesn’t establish whether people with diagnosed hypertension, or those already taking medication, would respond the same way. Nor does it show that wall squats can replace treatment or prevent heart attacks.
Anyone with high blood pressure should ask a clinician which exercises are appropriate.
Wall squats are an isometric exercise: the muscles work while the body stays still. Because researchers tested this move alone, the findings don’t automatically apply to planks, handgrip exercises, or other isometric holds.
Another detail makes the workout hard to replicate exactly: the study’s hold duration isn’t clear.
What Researchers Still Want To Know
The trial can’t say how long any of this lasts, or exactly why it works.
The researchers suggest that wall squats may relax and widen blood vessels and shift the nervous system toward a calmer state, although the mechanism still needs investigation.
They also noticed that changes in underlying cardiovascular measures faded alongside the blood-pressure gains, a pattern consistent with the importance of training frequency. It doesn’t prove one caused the other.
And eight weeks leaves a big question unanswered. Would once- or twice-weekly sessions keep working over months or years? Researchers also wonder whether training for longer at the outset could help benefits persist after exercise stops. For now, that’s a possibility, not a finding.
If a lighter schedule can keep some of the benefit, what’s been the hardest part of sticking with exercise for you?
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