The Effect of Vagus Nerve Stimulation on Sportive Performance.

Study Overview
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Brief Summary
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Performance is defined as the physiological potential required for an individual's physical activity. The sportive activity that he creates with his potential is defined as the sportive performance level of the individual. There are many factors that determine athletic performance. These factors are; environmental factors such as heredity, physical structure, training level, technical capacity and mental adequacy, quality of training areas, nutritional quality, suitability in weather conditions. All these factors affect the planning of multidisciplinary and interdisciplinary approaches that affect the performance of the athlete. Autonomic regulation is very important for the reorganization of the athlete's performance. Auricular vagus nerve stimulation (VNS) is a non-invasive method. With this method, autonomic nervous system regulation can be done practically. In the literature, there are no studies examining the effect of VNS on recovery and performance in athletes.

Detailed Description
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In this study, the effects of auricular vagus nerve stimulation on performance and recovery were investigated, which was designed as a randomized controlled trial, a single session of VSU was applied to 60 male professional athletes (30 experimantal, 30 control). The normal application waveform was biphasic asymmetric, with a pulse duration of 300 microseconds and a frequency of 25 hertz, for 20 minutes and continuously.

Official Title
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INVESTIGATION OF THE EFFECT OF NONINVASIVE AURICULAR VAGUS NERVE STIMULATION ON PERFORMANCE IN PROFESSIONAL ATHLETES

Conditions
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Sports Performance

Intervention / Treatment
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* Device: Auricular vagus nerve stimulation
* Device: Sham Auricular Vagus Nerve Stimulation (AVNS)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Being an athlete who continues an active sports life. Not have an ongoing injury that prevents participation in the study To make a medium and high level weekly training period. Exclusion Criteria: Having a systemic or neurological disease affecting the autonomic nervous system. Be younger than 18 years old and over 40 years old. Loss of sensation affecting the inner and outer ear, etc. have the disease. Having any acute systemic disease to exercise.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 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: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: Randomized Controlled Trial
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Vagus nerve stimulation<br>Auricular Vagus Nerve Stimulation (AVNS) was applied to the experimental group. AVNS application was applied to both ears simultaneously for 20 minutes, with waveform biphasic asymmetric, pulse duration 300 microseconds and frequency 25 hertz. AVNS application was made with Vagustim brand device. The acute effect of the application was evaluated in both groups by isometric quadriceps strength measurement, heart rate variability measurement, grip strength measurement and modified star balance test measurement performed before and after the single session AVNS. | Device: Auricular vagus nerve stimulation<br>* Autonomic nerve system regulation<br>|
| Sham Comparator: Control group<br>Sham Auricular Vagus Nerve Stimulation (AVNS) was applied to the experimental group. AVNS application was applied to both ears simultaneously for 20 minutes, with no pulse. AVNS application was made with Vagustim brand device. Before and after sham AVNS isometric quadriceps strength measurement, heart rate variability measurement, grip strength measurement and modified star balance test measurement performed. | Device: Sham Auricular Vagus Nerve Stimulation (AVNS)<br>* Sham Auricular Vagus Nerve Stimulation (AVNS)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Heart rate | Heart rate variability was controlled for autonomic measurement evaluation in both groups. Polar H7 heart rate sensor chest strap and wrist watch were used to measure analytical heart rate variability. | 1 day | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Vagus, autonomic nerve system