Hormonal
Several months of heavy resistance training reduces central arterial compliance in healthy men, an effect that reverses upon detraining.
Heavy resistance training (high intensity, high volume) can reduce the elasticity of your central arteries. However, this study used a very intense protocol (80% 1RM to failure) that exceeds standard health guidelines. If you lift weights moderately, this specific risk may not apply, but be aware that extreme heavy lifting has distinct cardiovascular trade-offs compared to aerobic exercise.
In marked contrast to the beneficial effect of regular aerobic exercise, several months of resistance training 'reduces' central arterial compliance in healthy men.
Why this rating
Randomized controlled trial with a detraining phase confirming causality, though sample size is small (n=28).
Source
Unfavorable Effects of Resistance Training on Central Arterial Compliance
Motohiko Miyachi et al. · Circulation · 2004
DOI 10.1161/01.cir.0000146380.08401.99
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