Exercise & Training

Association of physical activity with arterial stiffness: the mediating role of the visceral fat metabolism score.

TL;DR

Higher levels of physical activity are associated with a lower risk of arterial stiffness among middle-aged and older Chinese adults, with this association partially mediated by improvements in visceral fat metabolism as measured by the Metabolic Score For Visceral Fat.

Key Findings

Each standard deviation increase in physical activity intensity was associated with a 22% reduction in arterial stiffness risk.

  • Odds ratio = 0.78, 95% CI: 0.72-0.84, p < 0.001 in the fully adjusted model
  • Data were drawn from the 2015 China Health and Retirement Longitudinal Study
  • Physical activity was assessed using the International Physical Activity Questionnaire
  • Arterial stiffness was determined by estimated pulse wave velocity

Both moderate-intensity and high-intensity physical activity were significantly associated with a lower risk of arterial stiffness compared to low-intensity physical activity.

  • Moderate-intensity PA: OR = 0.75, 95% CI: 0.61-0.92, p = 0.005
  • High-intensity PA: OR = 0.57, 95% CI: 0.48-0.68, p < 0.001
  • High-intensity PA was associated with a 43% reduction in arterial stiffness risk compared to low-intensity PA
  • Both comparisons were made relative to the low-intensity PA reference group

Restricted cubic spline analysis revealed a nonlinear association between physical activity intensity and arterial stiffness risk.

  • Arterial stiffness risk decreased as physical activity intensity increased
  • p-nonlinear = 0.034, indicating statistically significant nonlinearity
  • Multivariable logistic regression and restricted cubic spline models were applied for statistical analyses

The Metabolic Score For Visceral Fat significantly mediated the negative association between physical activity and arterial stiffness.

  • The mediation proportion accounted for 11.4% of the total effect
  • Bootstrap mediation analysis was used to assess the mediating role
  • The mediation was statistically significant as determined by Bootstrap analysis
  • This indicates that the majority (~88.6%) of the association between PA and AS operates through pathways other than visceral fat metabolism

What This Means

This research suggests that being more physically active is linked to healthier, more flexible arteries in middle-aged and older adults in China. Using data from a large national health survey conducted in 2015, researchers found that people who engaged in moderate or high levels of physical activity had meaningfully lower odds of having stiff arteries compared to those with low activity levels. The relationship was not simply linear — the benefits grew as activity levels increased, and even moderate activity conferred significant protection. The study also investigated why physical activity might protect against arterial stiffness, focusing on visceral fat — the harmful fat stored around internal organs. Researchers used a measure called the Metabolic Score For Visceral Fat and found that improvements in visceral fat metabolism explained about 11.4% of the protective effect of physical activity on arterial stiffness. This means that while reducing visceral fat is one way exercise helps keep arteries healthy, most of the benefit likely comes through other biological mechanisms not captured in this study. This research suggests that promoting physical activity among middle-aged and older adults could be an important strategy for preserving cardiovascular health, with part of the benefit working through reductions in harmful visceral fat. The findings highlight visceral fat metabolism as one potential pathway connecting exercise to arterial health, which could inform future research into targeted interventions for reducing cardiovascular disease risk.

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Citation

Jiang H, Shao X, Jiang L, Zhang T. (2026). Association of physical activity with arterial stiffness: the mediating role of the visceral fat metabolism score.. Archives of endocrinology and metabolism. https://doi.org/10.20945/2359-4292-2026-0094