Comparison of the effects of transcranial direct current and transcranial pulsatile current stimulation on anaerobic performance and neurophysiological responses in basketball girls

Comparison of the effects of transcranial direct current and transcranial pulsatile current stimulation on anaerobic performance and neurophysiological responses in basketball girls

A clinical trial with a control group, with a within-group design, reciprocal balance, double-blind, randomized, on 15 subjects. Latin square was used for randomization.

This study will be done in Razi University. After selecting the subjects and familiarizing themselves with the research process, each subject will be exposed to 3 different conditions of electrical stimulation of the brain in a random order and then will perform the anaerobic test.

Basketball girls with at least two years of club sports experience in the field of basketball Age range from 18 to 30 years A resident of Kermanshah Body mass index (BMI) 18.5 to 24.9 kg/m2 Obtaining a certificate of non-prohibition of participation in sports training program from the doctor

This study is an intra-group and counterbalanced study, in which subjects are exposed to 3 different conditions of brain stimulation, including: 1) direct anodal stimulation of the left posterior lateral prefrontal cortex, 2) anodal pulse stimulation of the left posterior lateral prefrontal cortex , 3) sham stimulation (placebo effect) will be placed. The duration of stimulation will be 20 minutes and the intensity of direct anodal stimulation will be 2 mA and the intensity of pulse stimulation will be 1.5 mA.

Anaerobic peak power, average anaerobic power, fatigue index, EMG amplitude of the quadriceps muscle, pressure perception, pain sensation, heart rate, pleasure sensation, felt arousal sensation

In this study, the order of subject exposure to 3 different conditions (3 different types of electrical brain movement) will be randomized by Latin methods. For this purpose, first, using the www.random.org website, a number between 1 and 15 will be randomly assigned to each of the subjects as an identification code. Then, the English letters B, A and C will be assigned to the three intervention conditions and a Latin square will be created. In this case, a Latin square with three rows and three columns is created. Finally, participants number 1 to 5 are placed in the sequence of the first row, participants number 6 to 10 are placed in the sequence of the second row, and participants number 11 to 15 are placed in the sequence of the third row.

In this double-blind study, the researcher and participants will be blinded to the type of transcranial electrical stimulation used and the location of stimulation in each session. In the present study, the neurostimulator device was used to induce electrical stimulation of the brain in three separate sessions and three different modes including: 1) direct anodal current stimulation of the left posterior-lateral prefrontal cortex (DLPFC), 2) anodal pulse current stimulation of the posterior cortex - Left lateral prefrontal (DLPFC), 3) sham stimulation (placebo effect) will be used. For this purpose, a person outside the research team will be responsible for applying electrical stimulation during the experimental session. In order to blind the participants, after they sit on a special chair, the electrical stimulation device of the brain is hidden from their sight and covered by a cover completely, and the electrodes will be placed on the desired areas by the examiner. In order to blind the researcher, before the intervention, the researcher leaves the laboratory and returns to the test site after the stimulation period has passed and the electrodes are removed and the stimulation device is turned off. Also, in the sham stimulation mode, according to standard protocols, the active current is induced on the head for 30 seconds to induce the same sensation as the active stimulation mode, and then the current is cut off and the stimulation is deactivated.

All data can be shared after de-identifying the subjects.

6 months after the results are published

researchers

For meta-analysis research

If you need to receive documents, send an email to Mastoure Salimi, research researcher, at the email address: mastoure77.salimi@gmail.com.

In case of official request, announcement of the relevant reasons and full details, the data will be sent via email after 72 hours.