Artikel ; Online: Influence of Physical Training after a Myocardial Infarction on Left Ventricular Contraction Mechanics.
Arquivos brasileiros de cardiologia
2023 Band 120, Heft 4, Seite(n) e20220185
Abstract: Background: Exercise plays a positive role in the course of the ischemic heart disease, enhancing functional capacity and preventing ventricular remodeling.: Objective: To investigate the impact of exercise on left ventricular (LV) contraction ... ...
Titelübersetzung | Influência do Exercício Físico sobre a Mecânica de Contração do Ventrículo Esquerdo após Infarto do Miocárdio. |
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Abstract | Background: Exercise plays a positive role in the course of the ischemic heart disease, enhancing functional capacity and preventing ventricular remodeling. Objective: To investigate the impact of exercise on left ventricular (LV) contraction mechanics after an uncomplicated acute myocardial infarction (AMI). Methods: A total of 53 patients was included, 27 of whom were randomized to a supervised training program (TRAINING group), and 26 to a CONTROL group, who received usual recommendations on physical exercise after AMI. All patients underwent cardiopulmonary stress testing and a speckle tracking echocardiography to measure several parameters of LV contraction mechanics at one month and five months after AMI. A p value < 0.05 was considered statistically significant for the comparisons of the variables. Results: No significant difference were found in the analysis of LV longitudinal, radial and circumferential strain parameters between groups after the training period. After the training program, analysis of torsional mechanics demonstrated a reduction in the LV basal rotation in the TRAINING group in comparison to the CONTROL group (5.9±2.3 vs. 7.5±2.9o; p=0.03), and in the basal rotational velocity (53.6±18.4 vs.68.8±22.1 º/s; p=0.01), twist velocity (127.4±32.2 vs. 149.9±35.9 º/s; p=0.02) and torsion (2.4±0.4 vs. 2.8±0.8 º/cm; p=0.02). Conclusions: Physical activity did not cause a significant improvement in LV longitudinal, radial and circumferential deformation parameters. However, the exercise had a significant impact on the LV torsional mechanics, consisting of a reduction in basal rotation, twist velocity, torsion and torsional velocity which can be interpreted as a ventricular "torsion reserve" in this population. |
Mesh-Begriff(e) | Humans ; Ventricular Function, Left ; Myocardial Infarction/diagnostic imaging ; Heart Ventricles/diagnostic imaging ; Echocardiography ; Exercise ; Myocardial Contraction |
Sprache | Portugiesisch |
Erscheinungsdatum | 2023-04-24 |
Erscheinungsland | Brazil |
Dokumenttyp | Randomized Controlled Trial ; Journal Article |
ZDB-ID | 730261-7 |
ISSN | 1678-4170 ; 0066-782X |
ISSN (online) | 1678-4170 |
ISSN | 0066-782X |
DOI | 10.36660/abc.20220185 |
Datenquelle | MEDical Literature Analysis and Retrieval System OnLINE |
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