Exercise
Conditions
Interventions
Transcranial direct current stimulation
Before the constant load TTE test, individuals will receive either anodal HD-tDCS, anodal simulated conventional tDCS, or sham tDCS for 20 minutes. Participant
Brain Products, Munich, Germany). Each plastic casing will be filled with approximately 2 ml of HD-tDCS gel (Soterix Medical, New York, NY) to make contact between the electrode and the scalp. tDCS wi
Device
E02.331.750
E05.723.402
Sponsors
Universidade Federal do Rio Grande do Norte
Universidade Federal do Rio Grande do Norte
Eligibility
Sex/Gender
Male
Age
18 Years to 50 Years
Inclusion criteria
Inclusion criteria: Aged from 18 to 50 years; take part in physical training with competitive purposes during the last six months; participate in endurance competitions; free from any cardiovascular, musculoskeletal, neurological or psychiatric disease; not taking any medication that could affect the central nervous system (citalopram, amphetamines, L-dopa, sulpiride, pergolide, lorazepam, rivastigmine, flunarizine and carbamazepine); not having contraindications for tDCS (not having metal implanted in the head, pacemaker, medical bumps, seizures, lesions on the scalp or head)
Exclusion criteria
Exclusion criteria: Impossibility to analyze the data due to data loss; injury; voluntary abandonment
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Expected outcome 1 - It is expected to find an increase in physical performance with conventional and HD tDCS, evaluated by the time to exhaustion in a test in the cycle ergometer with fixed load at 80% of the maximum power reached in a progressive test of maximum effort, with a longer time compared to placebo condition;Outcome found 1 - There was no difference in time to exhaustion in a test on the cycle ergometer with a fixed load at 80% of the maximum power achieved in a progressive test of maximum effort between conventional and HD tDCS compared to placebo;Expected outcome 2 - It is expected to find an increase in physical performance with HD-tDCS, evaluated by the time to exhaustion in a test in the cycle ergometer with fixed load at 80% of the maximum power reached in a progressive test of maximum effort, with a longer time compared to conventional tDCS condition;Outcome found 1 - There was no difference in time to exhaustion in a test on the cycle ergometer with a fixed load at 80% of the maximum power achieved in a progressive test of maximum effort between conventional and HD tDCS | — |
Secondary
| Measure | Time frame |
|---|---|
| Expected outcome 4 - It is expected to find changes in the spectral power of the brain electrical activity, assessed using a 64-channel electroencephalogram, with increase in the spectral power of the frequency bands at rest in conventional and HD tDCS conditions as compared to the placebo condition ;Outcome found 4 - this outcome is still under analysis;Expected outcome 1 - It is expected to find a lower heart rate during exercise, assessed using a digital heart rate monitor, with lower values in submaximal intensities in conventional and HD tDCS conditions as compared to the placebo condition;Outcome found 1 - There was no difference in heart rate during exercise, assessed using a digital heart rate monitor, in any exercise intensity between conventional and HD tDCS compared to placebo;Expected outcome 2 - It is expected to find a lower ratings of perceived exertion, assessed using the Borg (6-20) perceived exertion scale, with lowed overall and for the legs perceived exertion in submaximal intensities in conventional and HD tDCS conditions as compared to the placebo condition;Outcome found 2 - There was no difference in ratings of perceived exertion, assessed using the Borg (6-20) perceived exertion scale, in any exercise intensity between conventional and HD tDCS compared to placebo;Expected outcome 3 - It is expected to find a lower percentage of associative thoughts during exercise, assessed using the Associative/dissociative thoughts scale (0-100%), with lower percentages of associative thoughts in submaximal intensities in conventional and HD tDCS conditions as compared to the placebo condition;Outcome found 3 - There was no difference in percentage of associative thoughts during exercise, assessed using the Associative/dissociative thoughts scale (0-100%), in any exercise intensity between conventional and HD tDCS compared to placebo | — |
Countries
Brazil
Contacts
Public ContactDaniel Machado
Universidade Federal do Rio Grande do Norte
Outcome results
None listed