Effect of continuous and interval exercise training on the PETCO2 response during a graded exercise test in patients with coronary artery disease
OBJECTIVE: The purpose of this study was to evaluate the following: 1) the effects of continuous exercise training and interval exercise training on the end-tidal carbon dioxide pressure (PETCO2) response during a graded exercise test in patients with coronary artery disease; and 2) the effects of e...
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| Format: | Article |
| Language: | English |
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Elsevier España
2012-01-01
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| Series: | Clinics |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322012000600013 |
| _version_ | 1818233409700364288 |
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| author | Enéas A. Rocco Danilo M. L. Prado Alexandre G. Silva Jaqueline M. A. Lazzari Pedro C. Bortz Débora F. M. Rocco Carla G. Rosa Valter Furlan |
| author_facet | Enéas A. Rocco Danilo M. L. Prado Alexandre G. Silva Jaqueline M. A. Lazzari Pedro C. Bortz Débora F. M. Rocco Carla G. Rosa Valter Furlan |
| author_sort | Enéas A. Rocco |
| collection | DOAJ |
| description | OBJECTIVE: The purpose of this study was to evaluate the following: 1) the effects of continuous exercise training and interval exercise training on the end-tidal carbon dioxide pressure (PETCO2) response during a graded exercise test in patients with coronary artery disease; and 2) the effects of exercise training modalities on the association between PETCO2 at the ventilatory anaerobic threshold (VAT) and indicators of ventilatory efficiency and cardiorespiratory fitness in patients with coronary artery disease. METHODS: Thirty-seven patients (59.7 + 1.7 years) with coronary artery disease were randomly divided into two groups: continuous exercise training (n = 20) and interval exercise training (n = 17). All patients performed a graded exercise test with respiratory gas analysis before and after three months of the exercise training program to determine the VAT, respiratory compensation point (RCP) and peak oxygen consumption. RESULTS: After the interventions, both groups exhibited increased cardiorespiratory fitness. Indeed, the continuous exercise and interval exercise training groups demonstrated increases in both ventilatory efficiency and PETCO2 values at VAT, RCP, and peak of exercise. Significant associations were observed in both groups: 1) continuous exercise training (PETCO2VAT and cardiorespiratory fitness r = 0.49; PETCO2VAT and ventilatory efficiency r = -0.80) and 2) interval exercise training (PETCO2VAT and cardiorespiratory fitness r = 0.39; PETCO2VAT and ventilatory efficiency r = -0.45). CONCLUSIONS: Both exercise training modalities showed similar increases in PETCO2 levels during a graded exercise test in patients with coronary artery disease, which may be associated with an improvement in ventilatory efficiency and cardiorespiratory fitness. |
| first_indexed | 2024-12-12T11:21:44Z |
| format | Article |
| id | doaj.art-65169b6b623447a5a96e2fa186165fbf |
| institution | Directory Open Access Journal |
| issn | 1807-5932 1980-5322 |
| language | English |
| last_indexed | 2024-12-12T11:21:44Z |
| publishDate | 2012-01-01 |
| publisher | Elsevier España |
| record_format | Article |
| series | Clinics |
| spelling | doaj.art-65169b6b623447a5a96e2fa186165fbf2022-12-22T00:26:00ZengElsevier EspañaClinics1807-59321980-53222012-01-0167662362810.6061/clinics/2012(06)13Effect of continuous and interval exercise training on the PETCO2 response during a graded exercise test in patients with coronary artery diseaseEnéas A. RoccoDanilo M. L. PradoAlexandre G. SilvaJaqueline M. A. LazzariPedro C. BortzDébora F. M. RoccoCarla G. RosaValter FurlanOBJECTIVE: The purpose of this study was to evaluate the following: 1) the effects of continuous exercise training and interval exercise training on the end-tidal carbon dioxide pressure (PETCO2) response during a graded exercise test in patients with coronary artery disease; and 2) the effects of exercise training modalities on the association between PETCO2 at the ventilatory anaerobic threshold (VAT) and indicators of ventilatory efficiency and cardiorespiratory fitness in patients with coronary artery disease. METHODS: Thirty-seven patients (59.7 + 1.7 years) with coronary artery disease were randomly divided into two groups: continuous exercise training (n = 20) and interval exercise training (n = 17). All patients performed a graded exercise test with respiratory gas analysis before and after three months of the exercise training program to determine the VAT, respiratory compensation point (RCP) and peak oxygen consumption. RESULTS: After the interventions, both groups exhibited increased cardiorespiratory fitness. Indeed, the continuous exercise and interval exercise training groups demonstrated increases in both ventilatory efficiency and PETCO2 values at VAT, RCP, and peak of exercise. Significant associations were observed in both groups: 1) continuous exercise training (PETCO2VAT and cardiorespiratory fitness r = 0.49; PETCO2VAT and ventilatory efficiency r = -0.80) and 2) interval exercise training (PETCO2VAT and cardiorespiratory fitness r = 0.39; PETCO2VAT and ventilatory efficiency r = -0.45). CONCLUSIONS: Both exercise training modalities showed similar increases in PETCO2 levels during a graded exercise test in patients with coronary artery disease, which may be associated with an improvement in ventilatory efficiency and cardiorespiratory fitness.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322012000600013Coronary Artery DiseaseExerciseCardiorespiratory FitnessVentilatory Efficiency |
| spellingShingle | Enéas A. Rocco Danilo M. L. Prado Alexandre G. Silva Jaqueline M. A. Lazzari Pedro C. Bortz Débora F. M. Rocco Carla G. Rosa Valter Furlan Effect of continuous and interval exercise training on the PETCO2 response during a graded exercise test in patients with coronary artery disease Clinics Coronary Artery Disease Exercise Cardiorespiratory Fitness Ventilatory Efficiency |
| title | Effect of continuous and interval exercise training on the PETCO2 response during a graded exercise test in patients with coronary artery disease |
| title_full | Effect of continuous and interval exercise training on the PETCO2 response during a graded exercise test in patients with coronary artery disease |
| title_fullStr | Effect of continuous and interval exercise training on the PETCO2 response during a graded exercise test in patients with coronary artery disease |
| title_full_unstemmed | Effect of continuous and interval exercise training on the PETCO2 response during a graded exercise test in patients with coronary artery disease |
| title_short | Effect of continuous and interval exercise training on the PETCO2 response during a graded exercise test in patients with coronary artery disease |
| title_sort | effect of continuous and interval exercise training on the petco2 response during a graded exercise test in patients with coronary artery disease |
| topic | Coronary Artery Disease Exercise Cardiorespiratory Fitness Ventilatory Efficiency |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1807-59322012000600013 |
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