Rating of perceived exertion versus heart rate for isometric exercise prescription: Reliability and agreement study
ABSTRACT BACKGROUND: Previous studies have shown that isometric exercise training reduces systolic blood pressure by approximately 8 mmHg and diastolic blood pressure by approximately 4 mmHg in both normotensive and hypertensive individuals. However, the prescription of isometric exercises can be b...
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Associação Paulista de Medicina
2025-03-01
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| Series: | São Paulo Medical Journal |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802025000200204&lng=en&tlng=en |
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| author | Paulo Henrique de Melo Anderson Cavalcante Jessika Karla Tavares do Nascimento Faustino Silva José Lucas Porto Aguiar Jefferson Maxwell De Farias Silva Theo Victor Alves Soares Rêgo Raphael Mendes Ritti-Dias Breno Quintella Farah |
| author_facet | Paulo Henrique de Melo Anderson Cavalcante Jessika Karla Tavares do Nascimento Faustino Silva José Lucas Porto Aguiar Jefferson Maxwell De Farias Silva Theo Victor Alves Soares Rêgo Raphael Mendes Ritti-Dias Breno Quintella Farah |
| author_sort | Paulo Henrique de Melo |
| collection | DOAJ |
| description | ABSTRACT BACKGROUND: Previous studies have shown that isometric exercise training reduces systolic blood pressure by approximately 8 mmHg and diastolic blood pressure by approximately 4 mmHg in both normotensive and hypertensive individuals. However, the prescription of isometric exercises can be based on the rating of perceived exertion (RPE) or heart rate (HR) obtained during the maximal incremental isometry test. The reliability and agreement of this test have not been assessed. OBJECTIVES: To analyze the reliability and agreement indicators of HR and RPE during isometric wall squat incremental tests. DESIGN AND SETTING: A reliability and agreement study was conducted at Universidade Federal de Pernambuco. METHODS: Twenty-eight healthy subjects (54% men, 26 ± 5 years) performed two isometric wall squat incremental tests. The test began with a knee joint angle of 135° (knee and leg) progressively reduced by 10° at each stage. Each stage lasts 2 minutes or until voluntary exhaustion. The HR and RPE were obtained during the tests. Reliability and agreement were established using test-retest (paired t-test or Wilcoxon test), intraclass correlation coefficient (ICC), standard error of measurement (SEM), coefficient of variation (CV), and Bland-Altman plots. RESULTS: The HR and RPE increased significantly during both tests. The HR and RPE at each stage were similar between the two test sessions (P > 0.05). Both HRmax (ICC: 0.695, P = 0.002, SEM = 8.1 bpm and CV = 5.8%) and RPEmax (ICC: 0.525, P = 0.036, SEM = 0.4 and CV = 3.6%) presented similar reliability indicators, and no statistically significant differences were obtained between the two test sessions (P > 0.05). The Bland-Altman plots indicated good agreement between HRmax and RPEmax. CONCLUSION: HR and RPE showed similar reliability and agreement during the isometric wall squat incremental test. |
| format | Article |
| id | doaj-art-e0c7b2cda07c4d1dbd731e2a24ccb6f0 |
| institution | DOAJ |
| issn | 1806-9460 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Associação Paulista de Medicina |
| record_format | Article |
| series | São Paulo Medical Journal |
| spelling | doaj-art-e0c7b2cda07c4d1dbd731e2a24ccb6f02025-08-20T03:17:02ZengAssociação Paulista de MedicinaSão Paulo Medical Journal1806-94602025-03-01143210.1590/1516-3180.2024.0092.r1.29072024Rating of perceived exertion versus heart rate for isometric exercise prescription: Reliability and agreement studyPaulo Henrique de Melohttps://orcid.org/0000-0001-5211-4294Anderson Cavalcantehttps://orcid.org/0000-0002-7486-3453Jessika Karla Tavares do Nascimento Faustino Silvahttps://orcid.org/0000-0002-7805-0820José Lucas Porto Aguiarhttps://orcid.org/0000-0001-8616-2534Jefferson Maxwell De Farias Silvahttps://orcid.org/0009-0001-9114-0919Theo Victor Alves Soares Rêgohttps://orcid.org/0000-0002-2359-0950Raphael Mendes Ritti-Diashttps://orcid.org/0000-0001-7883-6746Breno Quintella Farahhttps://orcid.org/0000-0003-2286-5892ABSTRACT BACKGROUND: Previous studies have shown that isometric exercise training reduces systolic blood pressure by approximately 8 mmHg and diastolic blood pressure by approximately 4 mmHg in both normotensive and hypertensive individuals. However, the prescription of isometric exercises can be based on the rating of perceived exertion (RPE) or heart rate (HR) obtained during the maximal incremental isometry test. The reliability and agreement of this test have not been assessed. OBJECTIVES: To analyze the reliability and agreement indicators of HR and RPE during isometric wall squat incremental tests. DESIGN AND SETTING: A reliability and agreement study was conducted at Universidade Federal de Pernambuco. METHODS: Twenty-eight healthy subjects (54% men, 26 ± 5 years) performed two isometric wall squat incremental tests. The test began with a knee joint angle of 135° (knee and leg) progressively reduced by 10° at each stage. Each stage lasts 2 minutes or until voluntary exhaustion. The HR and RPE were obtained during the tests. Reliability and agreement were established using test-retest (paired t-test or Wilcoxon test), intraclass correlation coefficient (ICC), standard error of measurement (SEM), coefficient of variation (CV), and Bland-Altman plots. RESULTS: The HR and RPE increased significantly during both tests. The HR and RPE at each stage were similar between the two test sessions (P > 0.05). Both HRmax (ICC: 0.695, P = 0.002, SEM = 8.1 bpm and CV = 5.8%) and RPEmax (ICC: 0.525, P = 0.036, SEM = 0.4 and CV = 3.6%) presented similar reliability indicators, and no statistically significant differences were obtained between the two test sessions (P > 0.05). The Bland-Altman plots indicated good agreement between HRmax and RPEmax. CONCLUSION: HR and RPE showed similar reliability and agreement during the isometric wall squat incremental test.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802025000200204&lng=en&tlng=enExerciseResistance trainingObserver variationReproducibility of resultsIsometric exerciseReproducibilitySquat exercises |
| spellingShingle | Paulo Henrique de Melo Anderson Cavalcante Jessika Karla Tavares do Nascimento Faustino Silva José Lucas Porto Aguiar Jefferson Maxwell De Farias Silva Theo Victor Alves Soares Rêgo Raphael Mendes Ritti-Dias Breno Quintella Farah Rating of perceived exertion versus heart rate for isometric exercise prescription: Reliability and agreement study São Paulo Medical Journal Exercise Resistance training Observer variation Reproducibility of results Isometric exercise Reproducibility Squat exercises |
| title | Rating of perceived exertion versus heart rate for isometric exercise prescription: Reliability and agreement study |
| title_full | Rating of perceived exertion versus heart rate for isometric exercise prescription: Reliability and agreement study |
| title_fullStr | Rating of perceived exertion versus heart rate for isometric exercise prescription: Reliability and agreement study |
| title_full_unstemmed | Rating of perceived exertion versus heart rate for isometric exercise prescription: Reliability and agreement study |
| title_short | Rating of perceived exertion versus heart rate for isometric exercise prescription: Reliability and agreement study |
| title_sort | rating of perceived exertion versus heart rate for isometric exercise prescription reliability and agreement study |
| topic | Exercise Resistance training Observer variation Reproducibility of results Isometric exercise Reproducibility Squat exercises |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-31802025000200204&lng=en&tlng=en |
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