Vascular gains look modality-specific in over-60s

Blood vessels stiffen and the endothelium becomes less responsive with age, and both changes track cardiovascular risk in older people. Exercise is universally recommended to counter this, but 'exercise' is not one thing: aerobic work, walking, resistance training, mind-body practice, stretching and whole-body vibration all place very different demands on the circulation. Clinicians and older adults therefore face a practical question the standard advice does not answer — whether the type of training chosen changes which vascular measure improves. This review set out to rank the modalities against one another rather than simply asking whether exercise helps.

The authors searched eight electronic databases for randomised controlled trials of seven distinct exercise modalities in adults aged 60 years or older: aerobic, walking, resistance, combined, mind-body, stretching and whole-body vibration training. Eligible programmes had to be supervised, standardised, run for a minimum of 4 weeks and involve continuous monitoring of exercise intensity. A frequentist network meta-analysis pooled direct and indirect comparisons so that modalities never tested against each other could still be ranked. Endothelial function was captured by flow-mediated dilation and arterial stiffness by brachial-ankle pulse wave velocity, with blood pressure as a secondary outcome, and evidence quality was appraised using Cochrane RoB 2.0 and CINeMA.

Whole-body vibration and resistance training ranked highest for improving flow-mediated dilation, while aerobic training and walking ranked highest for attenuating brachial-ankle pulse wave velocity. Among secondary outcomes, stretching had the highest probability of lowering systolic blood pressure and combined training ranked among the leaders for diastolic blood pressure. Crucially, extensive overlap of confidence intervals meant these head-to-head differences generally lacked statistical significance, so no modality can be declared clinically superior. Certainty of evidence was graded moderate-to-high for endothelial function but only low-to-moderate for the arterial stiffness comparisons, and the authors note systolic reductions exceeding 10 mmHg would be clinically meaningful given the roughly 20% lower risk of major cardiovascular events associated with such a drop.

This extends the familiar finding that exercise benefits vascular health by asking a harder question about specificity, and it hints that different training styles may act on different parts of the vascular phenotype. It does not overturn existing guidance: because the rankings are not statistically separated and lean on indirect network comparisons, the authors explicitly reject the idea of an immediate paradigm shift. Heterogeneity between trials and risk of bias further blunt the conclusions. Open questions include whether modality-specific effects hold in longer programmes, whether they translate into events rather than surrogate measures, and how well vibration training compares once more trials exist.

The reasonable reading is that most supervised, monitored exercise appears to help older arteries, and that the choice of modality may shape which marker moves rather than whether anything improves at all. It is a reason to think resistance and vibration work are not merely strength tools while walking and aerobic training are not merely fitness tools — both may carry vascular value. Because the rankings are statistically fragile, treating any one modality as the definitive vascular exercise would be over-reading this evidence. For anyone tracking blood pressure, the review is a reminder that reductions of a clinically meaningful size are plausible from training.