Can exercise reverse arterial stiffness?

How much can exercise reverse arterial stiffness, and how quickly does it happen?

The short answer: a single bout of exercise can temporarily lower arterial stiffness within minutes, but lasting reversal requires consistent training over weeks. In a meta-analysis of 30 studies, pulse wave velocity (PWV) — the gold-standard measure of stiffness — was unchanged immediately after exercise, but dropped significantly 30 minutes later (effect size -0.27, meaning a modest but real reduction) [2]. However, that benefit faded within 24 hours, meaning daily exercise is needed to keep stiffness down [2].

For chronic reversal, the evidence is stronger. A systematic review of 16 randomized controlled trials in older adults found that aerobic training alone reduced PWV by an average of -0.62 m/s, while combined aerobic and resistance training produced an even larger drop of -0.85 m/s [11]. To put that in perspective, a 1 m/s increase in PWV is linked to a 15% higher risk of cardiovascular events, so a reduction of nearly 1 m/s is clinically meaningful. Resistance training alone had a neutral effect (0.06 m/s change), so it's the aerobic component that drives the reversal [11].

What type of exercise reverses arterial stiffness best — and does intensity matter?

Aerobic exercise is the clear winner, but intensity matters a lot. In a study of handgrip exercise, peripheral stiffness (measured in the arm) dropped significantly only after higher-intensity effort (50% of maximum contraction), not at 30% [1]. The reduction lasted up to 15 minutes post-exercise, and it wasn't due to changes in blood pressure — meaning the exercise itself directly relaxed the arteries [1][3]. Even passive stretching of the trunk using an exercise ball reduced central arterial stiffness by 4.5% in young adults, suggesting that mechanical compression of blood vessels during movement plays a role [4].

For people with higher cardiovascular risk, exercise still works — but the effect is smaller. In a study of 940 men, acute aerobic exercise lowered PWV by about 33 cm/s overall, but the reduction was more pronounced in smokers (especially heavy smokers) than in non-smokers [5]. Similarly, people with lower body fat percentages saw greater acute reductions in stiffness after exercise than those with higher body fat [6]. This suggests that while exercise reverses stiffness in almost everyone, the benefit is largest in those who are already healthier — and that reversing stiffness in high-risk groups may require more frequent or longer-term training.

How does exercise actually reverse arterial stiffness at the cellular level?

The key mechanism involves nitric oxide (NO), a molecule that relaxes blood vessels. Aerobic exercise training increases NO production and reduces levels of asymmetric dimethylarginine (ADMA), a substance that blocks NO. In a study of 31 middle-aged and older adults, 8 weeks of cycling at 60-70% of peak capacity significantly lowered carotid stiffness, and the improvement was directly linked to a rise in the NO-to-ADMA ratio [7][10]. The higher the ratio went, the more stiffness dropped — and this effect was the same in men and women [10].

But there's a catch: not everyone responds the same way. In transgender men receiving testosterone therapy, acute aerobic exercise did not reduce arterial stiffness at all, likely because testosterone itself increases stiffness and overrides the NO pathway [8]. And in older veterans, a single bout of maximal treadmill exercise actually increased stiffness temporarily, even after blood pressure returned to normal [9]. This means that while exercise can reverse stiffness in many people, the response depends on hormonal status, age, and baseline health — and in some cases, a single intense session may temporarily worsen it.

About These Sources

This answer is built on 11 peer-reviewed studies — published from 2021 to 2026, 2 from 2024 or later, 5 in Q1 journals, collectively cited 98 times — selected as the most relevant from 15 studies that passed quality screening, drawn from 52 papers retrieved from a database of over 500 million.

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