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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Acute whole-body electromyostimulation associated with dynamic exercises did not alter cardiac autonomic modulation and oxygen uptake in obese and eutrophic men

Full text
Author(s):
Gabriela Cassemiliano [1] ; Paula Angélica Ricci [2] ; Soraia Pilon Jürgensen [3] ; Bianca Cristina Domingos [4] ; Audrey Borghi-Silva [5]
Total Authors: 5
Affiliation:
[1] Universidade Federal de São Carlos. Laboratório de Fisioterapia Cardiopulmonar - Brasil
[2] Universidade Federal de São Carlos. Laboratório de Fisioterapia Cardiopulmonar - Brasil
[3] Universidade Federal de São Carlos. Laboratório de Fisioterapia Cardiopulmonar - Brasil
[4] Universidade Federal de São Carlos. Laboratório de Fisioterapia Cardiopulmonar - Brasil
[5] Universidade Federal de São Carlos. Laboratório de Fisioterapia Cardiopulmonar - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Motriz: rev. educ. fis.; v. 28, 2021-11-03.
Abstract

Abstract Aim: To contrast the acute effects of whole-body electromyostimulation (WB-EMS) with sham associated with dynamic exercises on cardiovascular, ventilatory, metabolic, and autonomic responses in men with obesity and controls. Methods: A randomized cross-over and double-blind trial with nine eutrophic (23.6 years; 23 ± 1.4 kg/m2) and ten men with obesity (26 ± 4 years; 38 ± 7 kg/m2), who were randomized to receive WB-EMS-Sham or Sham-WB-EMS with 30 min of rest between protocols. WB-EMS protocol (Miha Bodytec®) was applied at the motor level, frequency = 85 Hz, pulse duration = 350 μs, cycle on = 6′; cycle off = 4′. Sham group performed the same exercises with the electric current turned off. Throughout both protocols, subjects executed two dynamic exercises of 5 minutes each (step-up and step down associated with shoulder flexion, and lunge exercise associated with elbow flexion) in the same order. R-R intervals and breath-by-breath respiratory gases analysis were collected during the protocols. Heart rate variability (HRV) indexes were obtained using linear and nonlinear analysis. The level of statistical significance was set at p < 0.05. Results: Regarding both exercises, participants with obesity presented reduced oxygen uptake, higher ventilation, respiratory rate, blood pressure, and Borg scores (p < 0.05) when contrasted with controls, as expected. However, no significant differences were found for HRV indexes between groups (p > 0.05). In addition, WB-EMS did not increase oxygen uptake or altered autonomic modulation when contrasted with sham in both groups (p < 0.05). Conclusion: Obesity has a negative impact on symptoms and functional capacity. However, WB-EMS did not acutely enhance oxygen uptake or HRV during exercise in a population with obesity. (AU)

FAPESP's process: 17/22895-0 - Acute effect of body electrostimulation on the cardiac autonomic modulation and cardiopulmonary capacity in obese
Grantee:Gabriela Cassemiliano
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 18/13332-5 - Effects of whole-body electromyostimulation on cardiac autonomic control and functional capacity of obese individuals after bariatric surgery
Grantee:Paula Angélica Ricci
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 15/04101-1 - Clinical, functional and systemic effects of whole-body electrical stimulation after bariatric surgery
Grantee:Audrey Borghi Silva
Support Opportunities: Regular Research Grants