Psychophysical Aspects of Maximal Anaerobic Performance

Study Overview
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Brief Summary
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During anaerobic exercise, the metabolic pathway of glycolysis is used in order to produces high-energy compounds adenosine triphosphate (ATP).The level of lactic acid in the blood is a marker to the increased protons concentration and acidosis.nevertheless, the increased level of protons in addition to the release of bradykinin causes pain during the exercise that limited the subject's performance. Therefore, it is assumed that the individual pain sensitivity might determine the subject's performance. Aims: To investigate the role of the DNIC efficiency in prediction of anaerobic performance in humans (2) to study the role of peripheral pro-nociceptive processing in mediating pain during anaerobic exercise and its contribution to the subjects' performance (3) to assess the function of pain-related psychological factors in anaerobic performance.

Detailed Description
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To the best of our knowledge, no study has investigated the balance between the endogenous anti-nociceptive properties of the individual and the anaerobic-evoke pro-nociceptive activity in determining the maximal performance during anaerobic exercise. Moreover, the interaction between psychological factors and pro- and anti- nociceptive processes that are operated during anaerobic exercise, need to be investigated. Methods: Forty healthy men and women, between the ages of 18-40 will be involved in the study. Each participant will complete 3 psychological questionnaires regarding their personality traits: Pain Catastrophizing Scale (PCS), State-Trait Anxiety Inventory and Perceived Stress Questionnaire. Pain psychophysics tests will be used for evaluating the individual pain perception, prior and subsequent to the anaerobic exercise: (1) DNIC will be tested using a paradigm of two remote noxious stimuli with one, the 'conditioning stimulus' (immersing the hand in tub containing 8°c water), inhibiting the other, the 'test pain' (pressure pain threshold) in order to assess the endogenous analgesia (EA) efficiency (2) heat and pressure pain thresholds, and (3) temporal summation of painful heat and mechanical stimuli that reflect the neuroplasticity of the central nervous system following peripheral noxious stimulation. In addition, Anaerobic performance will be evaluated during Wingate test,and blood lactate will be measured. Gene related pain ill be tested using saliva samples .

Official Title
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Psychophysical Aspects of Maximal Anaerobic Performance

Conditions
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Anaerobic Performance

Intervention / Treatment
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* Other: Anaerobic wingate test


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: healthy Volunteers Exclusion Criteria: pregnancy

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 40 Years

Sexes Eligible for Study
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All

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: Screening
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Anaerobic Performance<br> | Other: Anaerobic wingate test<br> <br> |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Pain psychophysics tests | DNIC will be tested using a paradigm of two remote noxious stimuli with one, the 'conditioning stimulus' (immersing the hand in tub containing 8°c water), inhibiting the other, the 'test pain' (pressure pain threshold) in order to assess the EA efficiency (2) heat and pressure pain thresholds, and (3) temporal summation of painful heat and mechanical stimuli that reflect the neuroplasticity of the central nervous system following peripheral noxious stimulation. | 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Lactate concentration | Lactate concentration at rest will be measures using a portable lactate analyzer | 1 year | 
| The anaerobic performance | will be evaluated during executing of Wingate test | 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Anerobic exercise, Pain, Analgesia, Diffuse Noxious Inhibitory Control (DNIC), psychological stress