Tai Chi Lowered Blood Pressure More Than Aerobic Exercise in Prehypertension

CATEGORY: STRESS & MIND-BODY

Twelve months of tai chi lowered systolic blood pressure by about 7 points in adults whose readings sat just above the healthy range. Twelve months of aerobic exercise, in the same trial, lowered it by about 4.6. That is a gap of about 2.4 mm Hg. Systolic is the top number, the pressure inside the arteries each time the heart beats. All 342 participants had prehypertension, meaning pressure above normal but below the threshold for hypertension.¹

Normal Pressure Without Medication in 22% Versus 16%

Blood pressure is measured in millimeters of mercury, mm Hg for short, and small lasting drops in the top number track with lower long-term heart and stroke risk. The tai chi advantage did not live only in the clinic. It also turned up on 24-hour ambulatory monitoring, a portable cuff that takes readings all day while a person goes about ordinary life. By the end of the year, about 22% of the tai chi group had reached a normal blood pressure without medication. In the aerobic group it was about 16%.¹

Four Supervised Hours a Week for a Year

Which activity a participant got was not their choice. The 342 adults were sorted at random into tai chi or into an aerobic program of brisk walking, jogging, stair climbing or cycling. Both groups showed up for four supervised 60-minute sessions a week, every week, for a year, and 283 people finished. Random sorting is what lets the two activities be compared fairly. Without it, the comparison would be between the kind of person who takes up tai chi and the kind who takes up jogging. The trial had declared office systolic pressure at 12 months its main outcome in advance, and the difference favoring tai chi cleared the usual bar for statistical significance.¹ Readings came from the clinic and from the 24-hour monitors, so they reflect ordinary days rather than one nervous moment in a waiting room.¹

Meditation in Motion and the Fight-or-Flight Switch

Tai chi is often called meditation in motion. Slow deliberate movements, deep breathing, attention held on the body. Researchers think a practice like that may quiet the sympathetic nervous system, the fight-or-flight branch that tightens blood vessels and pushes pressure up, while leaning the body toward its calmer rest-and-digest state. The breathing and the mental focus are what separate tai chi from ordinary exercise, and they may be why it edged out aerobic activity here. The trial was not built to pin down a mechanism, so that part stays a reasonable guess.¹

Both Groups Improved, and 17 Other Trials Agree on Tai Chi

Aerobic exercise worked. Both groups came down; tai chi simply came down further in this trial. The people studied were a narrow slice, adults with prehypertension followed for a single year, and individuals vary. Nothing here speaks to how tai chi would sit alongside a treatment someone is already using. Other work points the same direction: a 2025 pooling of 17 randomized trials in adults with high blood pressure found systolic readings about 9 mm Hg below comparison groups.² The bottom number is less settled. A 2024 review of five trials comparing tai chi with routine care found systolic pressure lower but no clear difference in diastolic pressure, the pressure between beats.³

Key Takeaways

• Over one year, tai chi lowered systolic blood pressure by about 7 mm Hg against about 4.6 mm Hg for aerobic exercise in adults with prehypertension.
• About 22% of the tai chi group reached a normal blood pressure without medication, against about 16% of the aerobic group.
• Both activities lowered pressure. The trial cannot say why tai chi did more, though its slow breathing and held attention are the leading suspects.

References

1. Li X, Chang P, Wu M, et al. Effect of Tai Chi vs Aerobic Exercise on Blood Pressure in Patients With Prehypertension: A Randomized Clinical Trial. JAMA Network Open. 2024;7(2):e2354937. link
2. Xu J, Huang Y, Li L, et al. An RCT meta-analysis based on the efficacy of Tai Chi exercise therapy on blood pressure and blood lipids in patients with essential hypertension. Frontiers in Cardiovascular Medicine. 2025;12:1506912. link.
3. Zhang W, Wang H, Xiong Z, et al. Efficacy of Tai Chi exercise in patients with hypertension: systematic review and meta-analysis. Current Problems in Cardiology. 2024;49(11):102798. link.