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MEDICINA DELLO SPORT
A Journal on Sports Medicine
Official Journal of the Italian Sports Medicine Federation
Indexed/Abstracted in: BIOSIS Previews, EMBASE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 0,163
Medicina dello Sport 2016 June;69(2):163-72
language: English, Italian
Transcranial direct current stimulation improves muscle isokinetic performance of young trained individuals
Marcelo MAGALHÃES SALES 1, 2, Caio V. DE SOUSA 1, Rodrigo A. VIEIRA BROWNE 3, Eduardo BODNARIUC FONTES 4, Rafael DOS REIS VIEIRA OLHER 1, Carlos ERNESTO 1, Herbert G. SIMÕES 1
1 Graduate Program on Physical Education, Catholic University of Brasilia, Brasilia, Brazil; 2 School Health, UDF, University Center, Brasilia, Brazil; 3 Department of Human Movement, University of Lisbon, Lisbon, Portugal; 4 Department of Physical Education, Federal University of Rio Grande do Norte, Natal, Brazil
BACKGROUND: Here we investigated the effects of transcranial direct current stimulation (tDCS) applied over the left temporal lobe on isokinetic muscle performance in adults.
METHODS: Nineteen trained male (25.16±3.96 years; 75.11±8.06 kg; 176.90±7.75 cm; 24.04±2.44 kg∙m-2) received either the anodic (T3 of 10-20 EEG system) or sham stimulation for 20 min followed by maximal isokinetic leg extension testing. Each participant performed two sets of five repetitions, one at angular velocity of 60°∙s-1 and another at 180°∙s-1.
RESULTS: The performance on both tested velocities showed significant improvements in the total work (tDCS=1132.9±207.0 J vs. Sham=1015.43±159.2 J; t=-2.275; P=0.035; effect size=0.6361 at 60°∙s-1 and tDCS=823.7±135.5 J vs. Sham=746.3±105.0 J; t=-2.303; P=0.033; effect size=0.6385 at 180°∙s-1). Additionally, peak torque showed a tendency to increase in anodic condition despite not statistically different (60°∙s-1; P=0.055 and 180°∙s-1; P=0.062).
CONCLUSIONS: tDCS applied over the left temporal lobe of the cortex can improve isokinetic leg extension performance in trained adults.