Investigating the effect of transcranial direct current stimulation on muscle function and neurophysiological responses

Effects of intracranial direct current stimulation on muscle performance and neurophysiological responses of athletes in mental performance conditions

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

IRCT

Registry ID

IRCT20201121049453N2

Enrollment

Registered

2025-09-23

Start date

2025-10-12

Completion date

Unknown

Last updated

2025-10-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Participants are healthy individuals..

Interventions

Intervention 1: Intervention group: In this study, all subjects will be exposed to three intervention conditions with an interval of at least 72 hours, including 1) mental fatigue and stimulation (DLP

Eligibility

Sex/Gender

Male

Age

18 Years to 30 Years

Inclusion criteria

Inclusion criteria: Healthy, resistance-trained men (with at least 6 months of regular resistance training, 3 sessions per week) Age range 18 to 30 years Body Mass Index (BMI) 18.5 to 24.9 Right-handed (right hand dominant) Free from disease and health certificate from a doctor to participate in the exercise program

Exclusion criteria

Exclusion criteria: Use of any medication or sports supplement in the 3 months prior to the start of the intervention until the end of the intervention Use of drugs, alcohol, and caffeine supplements in the 3 months prior to the start of the intervention until the end of the intervention Color blindness History of seizures, epilepsy, or other types of neurological diseases Presence of implantable devices or pacemakers in the body Tobacco and alcohol use

Design outcomes

Primary

Measure	Time frame
Muscle performance. Timepoint: After each set, resistance training at 35% of one repetition maximum for three sets. Method of measurement: Number of repetitions per set × weight moved.;Perceived pressure. Timepoint: At the end of each set. Method of measurement: Using the 0 to 100 Borg scale.;Feeling of pleasure. Timepoint: At the end of each set. Method of measurement: Using an 11-item feeling scale.;Level of arousal felt. Timepoint: At the end of each set. Method of measurement: Using a 6-item scale, the level of perceived arousal.;Muscle pain. Timepoint: At the end of each set. Method of measurement: Using a 10-item pain scale.;Inhibitory control. Timepoint: Before and after interventions. Method of measurement: Using the Golden Word Color Stroop Test-2 Paper Version.;Choice reaction time. Timepoint: Before and after interventions. Method of measurement: Selective reaction timer software.	—

Measure

Time frame

Muscle performance. Timepoint: After each set, resistance training at 35% of one repetition maximum for three sets. Method of measurement: Number of repetitions per set × weight moved.;Perceived pressure. Timepoint: At the end of each set. Method of measurement: Using the 0 to 100 Borg scale.;Feeling of pleasure. Timepoint: At the end of each set. Method of measurement: Using an 11-item feeling scale.;Level of arousal felt. Timepoint: At the end of each set. Method of measurement: Using a 6-item scale, the level of perceived arousal.;Muscle pain. Timepoint: At the end of each set. Method of measurement: Using a 10-item pain scale.;Inhibitory control. Timepoint: Before and after interventions. Method of measurement: Using the Golden Word Color Stroop Test-2 Paper Version.;Choice reaction time. Timepoint: Before and after interventions. Method of measurement: Selective reaction timer software.

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Countries

Iran (Islamic Republic of)

Contacts

Public ContactEhsan Amiri

University of Kurdistan

ehsan.amirii93@gmail.com+98 87 3366 4600

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026