| Acute effect of resistance exercise intensity in cardiac autonomic modulation after exercise. | |
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MedLine Citation:
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PMID: 21503389 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: Cardiac sympathovagal balance is altered after resistance exercise. However, the impact of the characteristics of resistance training in this response remains unclear. OBJECTIVE: Analyze the acute effect of resistance exercise intensity for trunk and upper limbs in cardiac autonomic modulation after exercise. METHODS: Fifteen young men performed three experimental sessions in random order: control (C), resistance exercise with 50% of 1-RM (E50%) and resistance exercise with 70% of 1-RM (E70%). The sessions included 05 exercises for the trunk and upper limbs performed in three sets of 12, 9 and 6 repetitions, respectively. Before and at 20 and 50 minutes after the interventions, the heart rate was measured for spectral analysis of variability. RESULTS: In comparison to the values before the intervention, the RR interval and the band of high frequency (HF) increased (major changes: + 112 ± 83 ms; +10 ± 11 un, respectively, p < 0.01), while the low frequency band (LF) and LF/HF ratio decreased (major changes: -10 ± 11 pc; -2 ± 2, respectively, p < 0.01) after the session C. None of these variables changed significantly after the E50% session (p > 0.05). Compared to pre-exercise values, the RR interval and the HF band decreased (major changes: -69 ± 105 ms; -13 ± 14 un, respectively, p <0.01), while the LF band and the LF/HF ratio increased (major changes: -13 ± 14 un, 13 ± 3 14 ± 3 and un, respectively, p <0.01) after E70%. CONCLUSION: The higher intensity of resistance exercise for trunk and upper limbs promoted, in an acute manner, greater increase in cardiac sympathovagal balance after exercise. |
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Authors:
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Aluísio Henrique Rodrigues de Andrade Lima; Cláudia Lúcia de Moraes Forjaz; Gleyson Queiroz de Moraes Silva; Annelise Lins Menêses; Anderson José Melo Rodrigues Silva; Raphael Mendes Ritti-Dias |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-4-15 |
Journal Detail:
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Title: Arquivos brasileiros de cardiologia Volume: - ISSN: 1678-4170 ISO Abbreviation: - Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-4-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0421031 Medline TA: Arq Bras Cardiol Country: - |
Other Details:
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Languages: ENG; POR Pagination: - Citation Subset: - |
Affiliation:
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Escola Superior de Educação Física, Universidade de Pernambuco, Recife, PE. |
Vernacular Title:
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Efeito agudo da intensidade do exercício de força na modulação autonômica cardíaca pós-exercício. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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