Healthy Volunteers
Conditions
Brief summary
Anaerobic power and capacity are essential in many human activities, especially during sports practice that demand a high strength and power of the limbs. Transcranial direct current stimulation is a noninvasive technique that can modulate motor brain areas involved in motor functions and has the potential to optimize muscle capacity. However, their effects on mechanical power are lacking. This study aims to investigate the effects of transcranial direct current stimulation (tDCS) on mechanical power in healthy subjects.
Detailed description
In this study, a randomized, crossover, double-blind, placebo-controlled experimental design will be used. The 50 participants will be randomized into two groups: (1) Anodal tDCS(real) and (2) Sham tDCS. A single session of anodal and sham tDCS will be performed on each task (pre and post-jump test). All evaluations will be performed by a single researcher who, like the participants, will not know which stimulation group will be participating. Subjects who agree to the conditions and sign the consent form may participate in the study. Participants who meet the eligibility criteria will be included in the study.
Interventions
DEVICETranscranial direct current stimulation
Transcranial direct current stimulation (tDCS) is a noninvasive brain stimulation (NIBS) technique that has been investigated for the management of various health conditions. However, its ergogenic effect still has controversial results.
Sponsors
Universidade Federal do Piauí
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 35 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy subjects with no complaints of pain or any kind of discomfort in the musculoskeletal system
Exclusion criteria
* Musculoskeletal or neurological disorder * Under medication * Previous treatment with tDCS
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Mean anaerobic power | Pre and Post-test (immediately after tDCS) | Mean anaerobic power will be evaluated by assessing the ground reaction forces (GRF) and the number of jumps in each test by means of the kinetic analysis of the 60-second vertical jump test (Bosco's Test). |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Peak anaerobic power | Pre and Post-test (immediately after tDCS) | Peak anaerobic power will be evaluated by assessing the ground reaction forces (GRF) and the number of jumps in each test by means of the kinetic analysis of the 60-second vertical jump test (Bosco's Test). |
| Fatigue index | Pre and Post-test (immediately after tDCS) | Fatigue index will be evaluated by assessing the ground reaction forces (GRF) and the number of jumps in each test by means of the kinetic analysis of the 60-second vertical jump test (Bosco's Test). The fatigue index corresponds to the power reduction rate expressed as a percentage and reveals the degree of reduction in the ability to produce strength and maintain exercise. |
| Rating of perceived exertion | Post-test (immediately after tDCS) | The subjective feeling of effort will be assessed by the Borg scale for perceived effort. This is a 15-point numerical scale that ranges from 6 to 20, where 6 means no exertion at all and 20 means maximal exertion. |
Countries
Brazil
Outcome results
None listed