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Open Access

Correction

Correction: Acute effects of single dose transcranial direct current stimulation on muscle strength: A systematic review and meta-analysis

  • Eduardo Lattari,
  • Bruno R. R. Oliveira,
  • Renato Sobral Monteiro Júnior,
  • Silvio Rodrigues Marques Neto,
  • Aldair J. Oliveira,
  • Geraldo A. Maranhão Neto,
  • Sergio Machado,
  • Henning Budde
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There are errors in the reporting of the studies included in this systematic review and meta-analysis. The authors provide the following clarification:

  1. The potential error of our article was to include data from the study conducted by Frazer et al. (2016) in the Results section regarding the maximal isometric voluntary contraction (MIVC). Eligibility criteria determined the exclusion of this article by the intervention (n = 3). In the study by Frazer et al. (2016), 4 consecutive sessions of anodal and sham transcranial direct current stimulation (tDCS) were used. In fact, the objective of our study was systematically to review the literature on the effects of single dose tDCS to improve muscle strength. Based on this objective, we performed the data analysis related to the MIVC. The new results of the MIVC showed that the heterogeneity of the data were not significant (I2 = 0%; p = 0.48), and there was a significant difference between a-tDCS and sham-tDCS with a small effect size (SMD = 0.38; CI95% = 0.10 to 0.65; Z = 2.68; p = 0.007). Exclusion of the study by Frazer et al. (2016) was not statistically significant compared to previous results (SMD = 0.29; CI95% = 0.05 to 0.54; Z = 2.36; p = 0.02).Thus, the results of this study remain the same.

The authors provide updates to sentences in the Abstract, Results, and Discussions sections to correct these errors. Please see the location of the error, the original text, and the author-corrected text here.

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https://doi.org/10.1371/journal.pone.0229858.t001

Additionally, the authors provide updated Figs 1 and 2 to address these errors. Please see the correct figures here.

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Fig 1. Flowchart of outcomes of search strategy.

https://doi.org/10.1371/journal.pone.0229858.g001

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Fig 2. Forest plot showing a comparison of MIVC between tDCS and Sham.

Hazime et al. (2017)#- internal rotador shoulder; Hazime et al. (2017)*- external rotador shoulder; Vargas et al. (2017)#- knee extensors dominant limb; Vargas et al. (2017)*- knee extensors non-dominant limb.

https://doi.org/10.1371/journal.pone.0229858.g002

Reference

  1. 1. Lattari E, Oliveira BRR, Monteiro Júnior RS, Marques Neto SR, Oliveira AJ, Maranhão Neto GA, et al. (2018) Acute effects of single dose transcranial direct current stimulation on muscle strength: A systematic review and meta-analysis. PLoS ONE 13(12): e0209513. https://doi.org/10.1371/journal.pone.0209513 pmid:30586389

Citation: Lattari E, Oliveira BRR, Monteiro Júnior RS, Neto SRM, Oliveira AJ, Maranhão Neto GA, et al. (2020) Correction: Acute effects of single dose transcranial direct current stimulation on muscle strength: A systematic review and meta-analysis. PLoS ONE 15(3): e0229858. https://doi.org/10.1371/journal.pone.0229858

Published: March 2, 2020

Copyright: © 2020 Lattari et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.