Acute effect of resistance exercise intensity in cardiac autonomic modulation after exercise

A H R de Andrade Lima; C L de Moraes Forjaz; G Q de Moraes Silva; Annelise L Meneses; A J M R Silva; R M Ritti-Dias

doi:10.1590/S0066-782X2011005000043

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Acute effect of resistance exercise intensity in cardiac autonomic modulation after exercise

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Acute effect of resistance exercise intensity in cardiac autonomic modulation after exercise

A H R de Andrade Lima, C L de Moraes Forjaz, G Q de Moraes Silva, Annelise L Meneses, A J M R Silva and R M Ritti-Dias

Arquivos Brasileiros de Cardiologia, Vol.96(6), pp.498-503

2011

DOI: https://doi.org/10.1590/S0066-782X2011005000043

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Abstract

exercise

physical exertion

autonomic nervous system

sympathetic nervous system

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 less than 0.01), while the low frequency band (LF) and LF/HF ratio decreased (major changes: -10±11 pc; -2±2, respectively, p less than 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 less than 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 less than 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.

Details

Title: Acute effect of resistance exercise intensity in cardiac autonomic modulation after exercise
Authors: A H R de Andrade Lima (Author) - Universidade de Pernambuco, Brazil
C L de Moraes Forjaz (Author) - Universidade de Sao Paulo, Brazil
G Q de Moraes Silva (Author) - Universidade de Pernambuco, Brazil
Annelise L Meneses (Author) - Universidade de Pernambuco, Brazil
A J M R Silva (Author) - Universidade de Pernambuco, Brazil
R M Ritti-Dias (Author) - Universidade de Pernambuco, Brazil
Publication details: Arquivos Brasileiros de Cardiologia, Vol.96(6), pp.498-503
Publisher: Arquivos Brasileiros de Cardiologia
Date published: 2011
DOI: 10.1590/S0066-782X2011005000043
ISSN: 0066-782X
Copyright note: Copyright © 2011 de Andrade, etal. This is an Open Access article distributed under the terms of the Creative Commons License (https://creativecommons.org/licenses/by-nc-sa/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This published version is reproduced in accordance with this policy.
Organisation Unit: University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy
Language: English
Record Identifier: 99448635302621
Output Type: Journal article

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