A Single Session of tDCS (Transcranial Direct Current Stimulation) Improves Endurance for 30 Minutes

Study Overview
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Brief Summary
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Healthy recreational athletes will undergo a session of anodal tDCS (transcranial direct current stimulation) or sham tDCS. The primary outcome is an isokinetic evaluation of their hamstrings' and quadriceps' strength before and after each session

Detailed Description
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Healthy recreational athletes will be recruited through social media and advertisements. Each subject came to the Liege University Hospitals' isokinetic lab. Each session began with strapping the subjet into the isokinetic machine, making sure that all the settings were adapted to the subject. Then, each subject underwent a concentric and eccentric isokinetic test of their lower limbs (dominant or non-dominant side depending on their group). Subjects then received either anodal tDCS, of sham tDCS. Neither the evaluator or the subject knew which they were receiving. Immediately following tDCS, there was a another isokinetic test, and 30 minutes after the second test, a subjects underwent a third test.

Official Title
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A Single Session of a-tDCS Improves Lower Limb Endurance for 30 Minutes in Healthy Subjects

Conditions
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Athlete, Healthy

Intervention / Treatment
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* Device: TDCS


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Between 3 and 5 hours of sport a week Right handed and footed Exclusion Criteria: One on the TSST (in high and relatively high risk sections) Previous neurological or orthopedic pathologies affecting limbs

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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Male

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Health Services Research
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Randomized, triple-blind, sham-controlled, crossover
Masking: Triple


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Anodal tDCS<br>Subjects will receive 20min anodal tDCS | Device: TDCS<br>* 20 minutes, 2 electrodes (C3/FP2)<br>* Other names: Non invasive brain stimulation;|
| Sham Comparator: Sham tDCS<br>Subjects will receive 20 minutes of Sham anodal tDCS | Device: TDCS<br>* 20 minutes, 2 electrodes (C3/FP2)<br>* Other names: Non invasive brain stimulation;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Isokinetic Peak Strength | Concentric and Eccentric Peak Strength is measured in hamstrings and quadriceps at 60°/s using an isokinetic dynamometer | Changes between prior to tDCS, immediately following tDCS and 30 minutes after tDCS | 
| Isokinetic Work | Concentric and Eccentric Work is measured in hamstrings and quadriceps at 60°/s using an isokinetic dynamometer | Changes between prior to tDCS, immediately following tDCS and 30 minutes after tDCS | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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tDCS, Athlete, Isokinetic, Strength, Endurance