Cognition
Conditions
Interventions
Study 1:
Subjects will receive general information about the experiment, will be screened to verify their eligibility to participate in the study and then will visit the laboratory on four different o
D2, D3 and D4) experimental conditions using RS, modified ST (STM) or documentary screening continuously for 60 minutes, accompanied by EEG. Between days D1/D2 there will be a minimum interval of 48 h
avoid prolonged use (= 10 continuous minutes) of RS in the four hours preceding the experimental conditions and abstention from RS Instagram© for 12 hours
no physical exercise in the 24 hours preceding the experimental conditions. In addition, baseline collections and experimental conditions will be rescheduled in the following cases: I) total or partia
II) use of creatine for at least 5 continuous days, this situation requiring a five-week washout (VAN CUTSEM et al., 2020), if the volunteer agrees
III) VAS response pre-experimental conditions >25mm (protocol adopted by Kamali et al.). Neurophysiological variables (ERPs and frequency bands) will be considered as primary outcomes for this study
as secondary outcomes, manipulation check measures (ST, TVM, VAS) will be used.
The study will be submitted to the Research Ethics Committee (CEP) of the Health Sciences Center of the Federal Univers
F01.145.126.937
Sponsors
Universidade Federal da Paraíba
Universidade Federal da Paraíba
Eligibility
Age
18 Years to 35 Years
Inclusion criteria
Inclusion criteria: Combat sport athletes; both sexes; age between 18 and 35 years; more than five years of experience in their modality; have competitive experience in their modality of origin in the last three years; be training the modality continuously in the last six months; have an active profile on Instagram
Exclusion criteria
Exclusion criteria: having suffered a knockout or concussion in the last month before the beginning of the collections; being on a low-calorie diet with restricted carbohydrate intake; impossibility of data analysis due to technical failures; self-reporting cognitive and brain impairment; present visual problems that compromise color discrimination; self-reporting sleep disturbances
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| In study 1, the electrophysiological brain responses will be compared through the evaluation of electroencephalographic frequency bands in different types of cognitive effort. It is expected to find alpha frequency band increases in the conditions of prolonged cognitive effort through modified Stroop test and use of Social Network, compared to baseline and control condition, but not different from each other. ;In study 2, the effect of prolonged cognitive effort on the visuomotor performance of combat athletes will be verified, measured through the use of motion sensors (LED lights). Visuomotor performance is expected to be worse in the condition of prolonged cognitive effort, compared to control conditions, reflected by the worsening in accuracy and response time to the visuomotor test. ;In study 3, the contracting effect of transcranial stimulation by continuous current will be verified on the effects of prolonged cognitive effort on visuomotor performance. It is expected that real transcranial stimulation can attenuate the effects of prolonged cognitive effort on visuomotor performance, showing no difference from the control conditions (no stimulation and no cognitive effort) and being superior to the placebo condition (placebo brain stimulation and with cognitive effort). | — |
Secondary
| Measure | Time frame |
|---|---|
| This study have not secundary outcomes | — |
Countries
Brazil
Contacts
Public ContactHeloiana Faro
Universidade Federal da Paraíba
Outcome results
None listed