title: Does prefrontal cortex transcranial direct current stimulation influence the oxygen uptake at rest and post-exercise?
abstract: The study evaluated the effect of transcranial direct current stimulation (tDCS) applied over prefrontal cortex on the oxygen uptake (V˙ O2) at rest and during post-exercise recovery. The V˙ O2 was assessed in eleven healthy subjects before, during tDCS (sham or anodal tDCS, 2 mA, 20 min), and 30-min following isocaloric aerobic exercise (~200 kcal). During tDCS, no changes were observed on V˙ O2 compared to baseline (P=0.95) and sham condition (P=0.85). The association between isocaloric exercise and anodal tDCS increased the V˙ O2 throughout 30-min recovery compared to sham condition (P<0.001). Therefore, the energy expenditure within the excess post-exercise oxygen consumption (EPOC) period, after anodal tDCS was approximately 19% higher compared to the sham condition (P<0.05). In conclusion, anodal tDCS applied on the prefrontal cortex combined with submaximal aerobic exercise increased the EPOC, enhancing the V˙ O2 and energy expenditure at least for 30-min of recovery.
authors.affiliation: Physical Activity and Health Promotion Laboratory (LABSAU), Institute of Physical Education and Sports, Rio de Janeiro State University, Rio de Janeiro, Brazil.
authors.forename: R
authors.initials: R
authors.lastname: Montenegro
authors.affiliation: Departament of Sport Science, University of Campinas, Londrina, Brazil.
authors.forename: A H
authors.initials: AH
authors.lastname: Okano
authors.affiliation: Physical Activity Sciences Graduate Program, Salgado de Oliveira University, Rio de Janeiro, Brazil.
authors.forename: F A
authors.initials: FA
authors.lastname: Cunha
authors.affiliation: SPORTS SCIENCE, University of CAMPINAS - UNICAMP, CAMPINAS, Brazil.
authors.forename: E B
authors.initials: EB
authors.lastname: Fontes
authors.affiliation: School of Physical Education, Rio de Janeiro State University, Rio de Janeiro, Brazil.
authors.forename: P
authors.initials: P
authors.lastname: Farinatti
mesh_terms: D000328:Adult; D004734:Energy Metabolism; D015444:Exercise / Q000502:physiology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D010101:Oxygen Consumption; D017397:Prefrontal Cortex / Q000502:physiology*; D012119:Respiration; D012146:Rest; D065908:Transcranial Direct Current Stimulation; D055815:Young Adult