Is tDCS an Adjunct Ergogenic Resource for Improving Muscular Strength and Endurance Performance? A Systematic Review

Machado, Sérgio; Jansen, Petra; Almeida, Victor Danilo; Veldema, Jitka

doi:10.3389/fpsyg.2019.01127

Cited by 41 publications

(46 citation statements)

References 71 publications

(337 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The small effects we 297 report here are also similar to the standardized effects reported by Radel et al, (2017). The results 298 of these two pre-registered studies, plus other exploratory studies (Kan et al, 2013;Flood et al, 299 2017) and recent systematic reviews (Holgado et al, 2019;Machado et al, 2019), suggest that, 300 contrary to recent proposals (Angius et al, 2017;Edward et al, 2017), tDCS does not enhance 301 exercise performance, at least not for a sustained isometric contraction. However, it should be 302 noted that in 13 of the 20 participants, at least one condition (1 or 2 mA) improved exercise time 303 compared to sham (data available: https://osf.io/rh82g/files).…”

Section: Procedures 128supporting

confidence: 73%

No effect of tDCS of the primary motor cortex on isometric exercise performance or perceived fatigue

Wrightson¹,

Twomey²,

Millet³

2019

Preprint

View full text Add to dashboard Cite

18Anodal transcranial direct current stimulation (tDCS) of the primary motor cortex has been 19 reported to improve isometric exercise performance without changing corticospinal excitability. 20One possible cause for this may be the previous use of relatively high (2 mA) current intensities, 21 which have inconsistent effects on corticospinal excitability. The present pre-registered study 22 aimed to replicate previously reported ergogenic effects of 2 mA tDCS, and examine whether 1 23 mA anodal tDCS both improved isometric exercise performance and perceived fatigue, and more 24 reliably altered corticospinal excitability. On three separate occasions, participants performed a 25 sustained submaximal isometric knee extension until failure after receiving either 1 mA, 2 mA or 26 sham anodal tDCS. Corticospinal excitability of the knee extensors was measured using 27 transcranial magnetic stimulation immediately before and after tDCS. Rating of fatigue was 28 recorded throughout the isometric exercise. Neither 1 nor 2 mA tDCS improved exercise 29 performance, or reduced perceived fatigue, compared to sham stimulation. There was also no 30 effect of tDCS on the corticospinal excitability of the knee extensors. We found no effect of tDCS 31 on either exercise performance, perceived fatigue or corticospinal excitability. This study adds to 32 the growing body of literature reporting no ergogenic effect of tDCS. Large preregistered 33 replications of previously reported effects are now required before tDCS can be considered an 34 effective method to improve exercise performance. 35 36

show abstract

Section: Procedures 128supporting

confidence: 73%

No effect of tDCS of the primary motor cortex on isometric exercise performance or perceived fatigue

Wrightson¹,

Twomey²,

Millet³

2019

Preprint

View full text Add to dashboard Cite

show abstract

“…From this study, it is very obvious that most staff members came from the non-innovative curriculum with significant response 0.05, yet they make use of attending and participating in FDAP, which indicates its usefulness in providing chances for learning new skills, as proved by other studies [26][27][28]. The study observed that 84% of the faculty members are interested in the presentation, which is in agreement with other studies [29,30], while 86% consider it as enriching their experience as teaching staff, which add a lot of skills to them, in finding that it is confirmed by other authorities (31).…”

Section: Discussionsupporting

confidence: 57%

Perception of Faculty Members of Regional Medical School Toward Faculty Development Program

Salih

AlShahrani

Eljac

et al. 2019

SJMS

View full text Add to dashboard Cite

Introduction: Any types or process of activities that are performed by a group or an individual to enhance, promote, and improve the performance, competencies or skills of a health professional at an institute level are defined as faculty development which has many other names like staff development, academic development, and educational development. The importance of faculty development stressed by Harden is equivalent to curriculum development, which is a very difficult assignment. Objectives: To determine the pattern of faculty members’ perception toward their weekly faculty development program. Methodology: Enrolling the faculty members of the College of Medicine, University of Bisha, Kingdom of Saudi Arabia ( COM/UB,KSA). COM/UB adopting the innovative curriculum (problem-based learning, team-based learning, interactive lectures, and case-based learning and seminars. Each Tuesday, faculty members gather in the faculty development academic program (FDAP) room to discuss issues related to medical education and quality. Usually, there is a presentation on the selected topic over 25 min, followed by a discussion and workshop, and finally, a recommendation is drawn. The inclusion criterion is those studying in the college for a period of more than one year. New joiners and those studying for a period of less than one year were excluded. Faculty members were enrolled optionally and requested to fill a validated questionnaire. Results: The response rate was 92% of total staff. More than 89%, 87%, 86% and 74% thought that the FDAP is useful to them, helps them in addressing academic issues in the faculty, is an enriching experience, and thought that it helps them in constructing high-quality multiple choice questions (MCQs). Finally, 84% were interested in presenting topics in FDP. Conclusion: FDAP was positively perceived by the faculty members of the University Bisha/College of Medicine, since it enriches their experience and satisfies their academic job. Keywords: faculty, development, academic, program, MCQs

show abstract

“…Fatigue is an important clinical outcome in tDCS studies and has been investigated in healthy subjects [21][22][23][24] and patients with neurological or psychiatric disorders [25][26][27][28]. However, tDCS studies on fatigue, especially in neurological disorders, have elicited conflicting results.…”

Section: Introductionmentioning

confidence: 99%

The Tolerability and Efficacy of 4 mA Transcranial Direct Current Stimulation on Leg Muscle Fatigability

2019

View full text Add to dashboard Cite

Transcranial direct current stimulation (tDCS) modulates cortical excitability and affects a variety of outcomes. tDCS at intensities ≤2 mA is well-tolerated, but the tolerability and efficacy of tDCS at intensities >2 mA merits systematic investigation. The study objective was to determine the tolerability and effects of 4 mA tDCS on leg muscle fatigability. Thirty-one young, healthy adults underwent two randomly ordered tDCS conditions (sham, 4 mA) applied before and during an isokinetic fatigue test of the knee extensors and flexors. Subjects reported the severity of the sensations felt from tDCS. Primary outcomes were sensation tolerability and the fatigue index of the knee extensors and flexors. A repeated-measures ANOVA determined statistical significance (p < 0.05). Sensation severity at 4 mA tDCS was not substantially different than sham. However, two subjects reported a moderate–severe headache, which dissipated soon after the stimulation ended. The left knee flexors had significantly greater fatigability with 4 mA tDCS compared with sham (p = 0.018). tDCS at 4 mA was well-tolerated by young, healthy subjects and increased left knee flexor fatigability. Exploration of higher intensity tDCS (>2 mA) to determine the potential benefits of increasing intensity, especially in clinical populations with decreased brain activity/excitability, is warranted.

show abstract

Is tDCS an Adjunct Ergogenic Resource for Improving Muscular Strength and Endurance Performance? A Systematic Review

Cited by 41 publications

References 71 publications

No effect of tDCS of the primary motor cortex on isometric exercise performance or perceived fatigue

No effect of tDCS of the primary motor cortex on isometric exercise performance or perceived fatigue

Perception of Faculty Members of Regional Medical School Toward Faculty Development Program

The Tolerability and Efficacy of 4 mA Transcranial Direct Current Stimulation on Leg Muscle Fatigability

Contact Info

Product

Resources

About