Resistance- and endurance-trained young men display comparable carotid artery strain parameters that are superior to untrained men

• DOI: 10.1007/s00421-024-05598-w
• Publication Date: 2024-10-03T10:02:07Z
• Authors: Ian Hornby-Foster; Cory T. Richards; Aimee L. Drane; Freya M. Lodge; Michael Stembridge; Rachel N. Lord; Hannah Davey; Zaheer Yousef; Christopher J. A....
• Keywords: Strain (injury); Endurance Training

Abstract Purpose Central arterial stiffness, a predictor of cardiovascular risk, attenuates with endurance-exercise in ageing populations. However, young individuals, this effect is inconsistent and emerging evidence suggests resistance-exercise may increase stiffness. Two-dimensional (2D)-Strain imaging the common carotid artery (CCA) more sensitive at detecting endurance-training induced alterations CCA stiffness than conventional methods, but has not been used to examine resistance-trained individuals. Therefore, we compared 2D-Strain parameters rest, during acute exercise recovery between resistance-trained, endurance-trained, untrained men. Methods Short-axis ultrasound images were obtained from 12 endurance-trained [27yrs (95%CI; 24–29)], 14 [24yrs (23–26)] [23yrs (22–24] men isometric handgrip (IHG) recovery. analysis quantified peak circumferential strain (PCS) systolic (S-SR) diastolic (D-SR) rates. Conventional indices included aortic pulse-wave velocity, β -stiffness ( 1 ) Petersons elastic modulus E p ). Results Resting different groups P > 0.05). PCS S-SR comparable resistance- [11.6% (10.6–12.5) 1.46 s −1 (1.37–1.55), respectively] [11.4% (10.7–12.2) 1.5 (1.38–1.62)] superior [9.5% (9.19–9.9); < 0.004 1.24 (1.17 – 1.31); 0.018)]. Both trained displayed reductions IHG, which returned resting values 0.001), whereas these remained unchanged D-SR decreased IHG all lesser extent 0.023), increased similar magnitude 0.001). Conclusion Resistance- display that are men, contends previous reports resistance-training increases