Effects of Transcranial Direct Current Stimulation (tDCS) on Rotator Cuff Fatigue.

University of Gran Rosario

Status: Completed

Conditions: Asymptomatic Condition

Treatments: Other: Transcranial Direct Current Stimulation

Study type: Interventional

Funder types: Other

Identifiers

NCT05210231

tDCS and Rotator Cuff

Details and patient eligibility

About

The aim of this study will be to determine the effects of active tDCS on rotator cuff fatigue. This study will be a randomized, double-blind, sham-controlled, cross-over clinical trial based on non-probabilistic sampling for convenience, comprising a sample of 20 active asymptomatic subjects of all genders and aged between 18 and 35 years old. Subjects will be recruited via social networks, WhatsApp and emails and must be currently engaged in moderate physical activity (assessed by the IPAQ questionnaire) and asymptomatic at the time of assessment. In addition, participants will be asked not to perform any type of strenuous exercise and do not drink alcoholic or caffeinated beverages during the time the work is performed. The study will consist of three sessions, with an interval of 72 hours between them.

Enrollment: 20 patients

Sex: All

Ages: 18 to 35 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Age ranging between 18 to 35 years, all genders.
• Healthy subjects
• Moderate physical activity (evaluated by IPAQ questionnaire)
• Do not perform any exhausting exercise and do not drink alcoholic or caffeinated beverages during the time the work is performed.

Exclusion criteria

• Subjects with trauma in the last three weeks or previous surgeries on the upper extremity, patients with pre-existing neurological or rheumatic conditions, pregnancy, medical history of epilepsy the convulsive event, subjects under analgesic drug treatment or have ingested drugs with central action in the last 72 hours.

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Double Blind

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20 participants in 2 patient groups

Active anodal tDCS

Experimental group

Description:

The direct electric current will be applied through a pair of sponges humidified with saline solution (150 mMols of NaCl diluted in water Milli-Q) on the electrodes (35 cm2). The electrodes (anode and cathode) will be connected to a continuous electric stimulator (Model: Microestim Foco Research, Brand: NKL, Souza Cruz, Brusque - SC, Brazil), with one energy battery (9 V) and will be mounted in accordance with the International 10-20 EEG System. For anodal polarity stimulation over the left TC, the anodal electrode will be placed over the scalp on the T3 area located at 40% of the distance on the left from the Cz point. The cathode electrode will be placed over the contralateral supraorbital area (Fp2). Thereafter, a constant electric current of 2 mA will be applied for 20 min.

Treatment:

Other: Transcranial Direct Current Stimulation

Sham anodal tDCS

Sham Comparator group

Description:

The direct electric current will apply through a pair of sponges humidified with saline solution (150 mMols of NaCl diluted in water Milli-Q) on the electrodes (35 cm2). The electrodes (anode and cathode) will be connected to a continuous electric stimulator (Model: Microestim Foco Research, Brand: NKL, Souza Cruz, Brusque - SC, Brazil), with one energy battery (9 V) and will be mounted in accordance with the International 10-20 EEG System. For the sham condition, the electrodes will be placed at the same positions as for the anodal tDCS. However, the stimulator will turn off after 30 s of stimulation. As a result, subjects will report the same sensory feelings from the beginning of the real tDCS conditions, specifically itching and tingling feelings on the scalp for the first few seconds of tDCS, but not thereafter, whether or not the stimulation will continue or stop.

Treatment:

Other: Transcranial Direct Current Stimulation