Carotid morphofunctional responses to maximal aerobic exercise in patients with coronary artery disease
Original article - e255667 - Published 2026 Aug 12
DOI:
https://doi.org/10.33233/rbfex.v25i2.5667Keywords:
physical exercise, atherosclerosis, endothelial dysfunction, coronary artery diseaseAbstract
Objective: To evaluate the acute effects of maximal aerobic exercise on carotid morphofunctional markers in patients with coronary artery disease (CAD) and healthy individuals. Methods: Patients with CAD (n = 8; 62.3 ± 4.3 years; 27.1 ± 3.1 kg/m²) who had completed phase II of a cardiac rehabilitation program (CRP) and healthy individuals (CONT; n = 5; 61.6 ± 3.5 years; 27.3 ± 3.2 kg/m²) were evaluated for carotid morphofunctional markers by ultrasonography before and after a cardiopulmonary exercise test (CPET). Results: Maximal oxygen uptake was lower in the CAD group compared with CONT (16.7 ± 3.5 vs. 24.0 ± 5.2 mL•kg⁻¹•min⁻¹; P = 0.01). Before CPET, no differences were observed between groups for systolic diameter (CAD: 6.05±0.65 vs. CONT: 6.23 ± 0.20 mm; P = 0.6), diastolic diameter (CAD: 5.41 ± 0.73 vs. CONT: 5.73 ± 0.15 mm; P = 0.4), peak systolic velocity (CAD: 66.27 ± 12.24 vs. CONT: 61.33± 15.67 cm•s⁻¹; P = 0.4), or end-diastolic velocity (CAD: 20.63 ± 4.15 vs. CONT: 21.07 ± 3.97 cm•s⁻¹; P = 0.4). Carotid intima–media thickness (cIMT) was borderline higher in the CAD group (0.93 ± 0.23 vs. 0.71 ± 0.10 mm; P = 0.07). After CPET, both groups showed increases in systolic diameter (CAD: +0.26; CONT: +0.16 mm; P < 0.001), diastolic diameter (CAD: +0.31; CONT: +0.17 mm; P = 0.03), and peak systolic velocity (CAD: + 9.80; CONT: + 8.66 cm·s⁻¹; P = 0.04). End-diastolic velocity (CAD: + 0.60; CONT: −3.75 cm·s⁻¹; P = 0.4) and cIMT (CAD: −0.02; CONT: −0.01 mm; P = 0.1) did not change significantly in either group (P>0.05). No between-group differences were observed in CPET-induced changes. Conclusion: Patients with CAD who had completed phase II of a cardiac rehabilitation program exhibited preserved vascular responses to maximal exercise.
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Copyright (c) 2026 Gabriela Andrade Paz, André Luiz Conveniente Soares, Tatiana Rodrigues dos Santos, Caio Luan Farias Costa, Cláudia de Mello Meirelles, Paulo Sergio Chagas Gomes, Maria das Graças Coelho de Souza, Juliana Pereira Borges

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