The effect of tDCS on improving physical performance and attenuating effort perception during maximal dynamic exercise in non-athletes.

Autor: Isis S; Applied Neuroscience Laboratory, Universidade Federal de Pernambuco, Recife, Brazil; Department of Physical Therapy, Universidade Federal de Pernambuco, Brazil., Armele D; Department of Physical Therapy, Universidade Federal de Pernambuco, Brazil., Paulo GL; Bioscience of Human Movement Laboratory, Universidade Tiradentes, Aracaju, Sergipe, Brazil., Raylene A; Applied Neuroscience Laboratory, Universidade Federal de Pernambuco, Recife, Brazil., Luam D; Applied Neuroscience Laboratory, Universidade Federal de Pernambuco, Recife, Brazil; Department of Physical Therapy, Universidade Federal de Pernambuco, Brazil., Marina BR; Applied Neuroscience Laboratory, Universidade Federal de Pernambuco, Recife, Brazil; Department of Physical Therapy, Universidade Federal de Pernambuco, Brazil., Adriana B; Applied Neuroscience Laboratory, Universidade Federal de Pernambuco, Recife, Brazil; Department of Physical Therapy, Universidade Federal de Pernambuco, Brazil., Katia MS; Applied Neuroscience Laboratory, Universidade Federal de Pernambuco, Recife, Brazil; Department of Physical Therapy, Universidade Federal de Pernambuco, Brazil. Electronic address: monte.silva@ufpe.br.
Jazyk: angličtina
Zdroj: Neuroscience letters [Neurosci Lett] 2023 Jan 18; Vol. 794, pp. 136991. Date of Electronic Publication: 2022 Nov 28.
DOI: 10.1016/j.neulet.2022.136991
Abstrakt: Objectives: This study aimed to test the effects of transcranial direct current stimulation (tDCS), using different electrode positioning and montages, on physical performance in maximum incremental tests of healthy non-athlete subjects.
Design: A double-blinded, crossover, sham-controlled study.
Method: Fifteen subjects (aged 25.8 ± 5 years, nine women) received one of five different tDCS protocols: (i) anodal tDCS on the primary motor cortex (M1) (a-tDCS/M1), (ii) anodal tDCS on the left temporal cortex (T3) (a-tDCS/T3), (iii) cathodal tDCS on M1 (c-tDCS/M1), (iv) cathodal on T3 (c-tDCS/T3), or (v) sham tDCS. The protocols were assigned in a random order in separate sessions. After tDCS, the volunteers performed the maximal incremental exercise test (MIT) on a cycle ergometer in each session. The following measures were used to evaluate physical performance (primary outcome) during MIT: time to exhaustion (TE), maximum power (MAX-P), and Borg Rating of Perceived Exertion (RPE) scale. In addition, as a secondary outcome measure, we assessed the lower-limb corticospinal excitability and electrical muscular activity.
Results: tDCS applied over T3 or M1 did not influence electrical muscular activity or increase physical performance during MIT in healthy non-athlete subjects. However, our data confirmed that a-tDCS on the M1 increases lower-limb cortical excitability.
Conclusions: Our results suggest that tDCS is not effective in improving performance during maximal dynamic exercise in non-athletes. However, we confirmed that the a-tDCS M1 protocol used in this study might increase cortical excitability in the lower limb motor cortex.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022. Published by Elsevier B.V.)
Databáze: MEDLINE
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