Acute Response to Aerobic Exercise on Autonomic Cardiac Control of Patients in Phase III of a Cardiovascular Rehabilitation Program Following Coronary Artery Bypass Grafting
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| Natura: | Artículo científico |
| Lingua: | en |
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Sociedade Brasileira de Cirurgia Cardiovascular
2019
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| author | Bruno Bavaresco Gambassi |
| author_facet | Bruno Bavaresco Gambassi |
| contents | Acute Response to Aerobic Exercise on Autonomic Cardiac Control of Patients in Phase III of a Cardiovascular Rehabilitation Program Following Coronary Artery Bypass Grafting Bruno Bavaresco Gambassi Fabiano de Jesus Furtado Almeida Ana Eugênia Araújo Furtado Almeida Daniela Alves Flexa Ribeiro Rômulo Sérgio Araújo Gomes Luiz Filipe Costa Chaves Thiago Matheus da Silva Sousa Vinicius José da Silva Nina Medicina Exercise Heart Rate Autonomic Nervous System Cardiovascular Surgical Procedures Objective: The aim of the present study was to investigate the acute response to aerobic exercise on autonomic cardiac control of patients undergoing coronary artery bypass grafting (CABG).Methods: The study sample consisted of eight patients (age: 58.6±7.7 years; body mass index: 26.7±3.5 kg.m2) who underwent a successful CABG (no complications during surgery and/or in the following weeks). To assess heart rate variability (HRV), participants remained in a supine position with a 30-degree head elevation for 20 minutes. Electrocardiographic signal (protocol with three derivations) was collected from 600 Hz sample rate to obtain beat-to-beat intervals (R-R interval). This assessment was performed before, after one hour and after 24 hours of the exercise session. All patients underwent a 35 minutes aerobic exercise session (AES) (low-moderate intensity) on the cycle ergometer.Results: Significant differences were found in the time domain, with positive changes in root mean square of successive RR interval differences (rMSSD) (ms) (parasympathetic component) (one P=0.017 and 24 hours P=0.007 post-session). In the frequency domain, we found a significant difference in high frequency (HF) (ms2) (parasympathetic component) (one hour P=0.048 post-session). The low frequency (LF)/HF ratio (sympathetic and parasympathetic components with a predominance of the sympathetic component) reached statistical significance only 24 hours (P=0.018) post-session. Additionally, the largest effect size was observed only for the LF/HF ratio at one (d=-0.8) and 24 hours (d=-1.3) after one AES.Conclusion: The practice of (acute) aerobic exercise improved autonomic cardiac control in patients undergoing CABG. 2019 artículo científico 0102-7638 https://www.redalyc.org/articulo.oa?id=398960426009 https://www.redalyc.org/journal/3989/398960426009/ https://www.redalyc.org/journal/3989/398960426009/html/ https://www.redalyc.org/journal/3989/398960426009/398960426009.epub https://www.redalyc.org/journal/3989/398960426009/movil 10.21470/1678-9741-2019-0030 en http://www.redalyc.org/revista.oa?id=3989 Revista Brasileira de Cirurgia Cardiovascular/Brazilian Journal of Cardiovascular Surgery application/pdf Sociedade Brasileira de Cirurgia Cardiovascular Revista Brasileira de Cirurgia Cardiovascular/Brazilian Journal of Cardiovascular Surgery (Brasil) Num.3 Vol.34 |
| format | Artículo científico |
| id | redalyc_398960426009 |
| institution | Redalyc |
| language | en |
| publishDate | 2019 |
| publisher | Sociedade Brasileira de Cirurgia Cardiovascular |
| spellingShingle | Acute Response to Aerobic Exercise on Autonomic Cardiac Control of Patients in Phase III of a Cardiovascular Rehabilitation Program Following Coronary Artery Bypass Grafting Bruno Bavaresco Gambassi Medicina Exercise Heart Rate Autonomic Nervous System Cardiovascular Surgical Procedures Acute Response to Aerobic Exercise on Autonomic Cardiac Control of Patients in Phase III of a Cardiovascular Rehabilitation Program Following Coronary Artery Bypass Grafting Bruno Bavaresco Gambassi Fabiano de Jesus Furtado Almeida Ana Eugênia Araújo Furtado Almeida Daniela Alves Flexa Ribeiro Rômulo Sérgio Araújo Gomes Luiz Filipe Costa Chaves Thiago Matheus da Silva Sousa Vinicius José da Silva Nina Medicina Exercise Heart Rate Autonomic Nervous System Cardiovascular Surgical Procedures Objective: The aim of the present study was to investigate the acute response to aerobic exercise on autonomic cardiac control of patients undergoing coronary artery bypass grafting (CABG).Methods: The study sample consisted of eight patients (age: 58.6±7.7 years; body mass index: 26.7±3.5 kg.m2) who underwent a successful CABG (no complications during surgery and/or in the following weeks). To assess heart rate variability (HRV), participants remained in a supine position with a 30-degree head elevation for 20 minutes. Electrocardiographic signal (protocol with three derivations) was collected from 600 Hz sample rate to obtain beat-to-beat intervals (R-R interval). This assessment was performed before, after one hour and after 24 hours of the exercise session. All patients underwent a 35 minutes aerobic exercise session (AES) (low-moderate intensity) on the cycle ergometer.Results: Significant differences were found in the time domain, with positive changes in root mean square of successive RR interval differences (rMSSD) (ms) (parasympathetic component) (one P=0.017 and 24 hours P=0.007 post-session). In the frequency domain, we found a significant difference in high frequency (HF) (ms2) (parasympathetic component) (one hour P=0.048 post-session). The low frequency (LF)/HF ratio (sympathetic and parasympathetic components with a predominance of the sympathetic component) reached statistical significance only 24 hours (P=0.018) post-session. Additionally, the largest effect size was observed only for the LF/HF ratio at one (d=-0.8) and 24 hours (d=-1.3) after one AES.Conclusion: The practice of (acute) aerobic exercise improved autonomic cardiac control in patients undergoing CABG. 2019 artículo científico 0102-7638 https://www.redalyc.org/articulo.oa?id=398960426009 https://www.redalyc.org/journal/3989/398960426009/ https://www.redalyc.org/journal/3989/398960426009/html/ https://www.redalyc.org/journal/3989/398960426009/398960426009.epub https://www.redalyc.org/journal/3989/398960426009/movil 10.21470/1678-9741-2019-0030 en http://www.redalyc.org/revista.oa?id=3989 Revista Brasileira de Cirurgia Cardiovascular/Brazilian Journal of Cardiovascular Surgery application/pdf Sociedade Brasileira de Cirurgia Cardiovascular Revista Brasileira de Cirurgia Cardiovascular/Brazilian Journal of Cardiovascular Surgery (Brasil) Num.3 Vol.34 |
| title | Acute Response to Aerobic Exercise on Autonomic Cardiac Control of Patients in Phase III of a Cardiovascular Rehabilitation Program Following Coronary Artery Bypass Grafting |
| topic | Medicina Exercise Heart Rate Autonomic Nervous System Cardiovascular Surgical Procedures |
| url | https://www.redalyc.org/articulo.oa?id=398960426009 https://www.redalyc.org/journal/3989/398960426009/ https://www.redalyc.org/journal/3989/398960426009/html/ https://www.redalyc.org/journal/3989/398960426009/398960426009.epub https://www.redalyc.org/journal/3989/398960426009/movil |