Wetsuit and Life Jacket Induced Effects on Spirometry and VO2 in Windsurfers

Study Overview
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Brief Summary
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The purpose of this study is to investigate the effect of wearing both neoprene suit and life jacket on respiratory capacities at rest and cardiopulmonary capacities during exercise in windsurfers.

Detailed Description
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Windsurfers will perform resting spirometry and exercise test on cycle ergometer until exhaustion in two conditions: with or without equipment. The investigators will measure Forced Vital Capacity, FEV1 peak flow at rest and oxygen uptake, carbon dioxide consumption, ventilation at each step of the incremental exercise and at exhaustion.

Official Title
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Étude de l'Effet de la Combinaison néoprène et de l'équipement Individuel de Flottaison Sur la Fonction Respiratoire de Repos et Les capacités à l'Effort Chez Les véliplanchistes : étude WINDSURF

Conditions
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Ventilation, Exercise

Intervention / Treatment
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* Diagnostic Test: resting standard spirometry
* Diagnostic Test: maximum exercise testing


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female aged 18 to 35 Do not contraindicate any of the investigations in the study Being affiliated to a social security system free, informed and written consent Have already performed a cardiopulmonary exercise test without any electrocardiographic abnormality Subject practicing windsurfing (whatever the level of practice (leisure or competition)) Exclusion Criteria: Subjects < 18 years old Pregnant woman Inability to consent Taking any of the following: oral or inhaled Beta 2 short-acting or long-acting mimetics, oral or inhaled corticosteroids, oral anti-leukotrienes. Abnormalities in the resting ECG pattern

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 35 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: Diagnostic
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: with neoprene suit and life jacket<br>Realization of the following examinations WITH neoprene suit and life jacket : resting standard spirometry maximum exercise testing. No drug and no placebo will be used in this arm. | Diagnostic Test: resting standard spirometry<br>* The subject (seated, bust straightened) should perform, after a slow and maximum inspiration, a forced and complete exhalation followed by a new inspiration to the total lung capacity.<br>Diagnostic Test: maximum exercise testing<br>* Incremental exercise on cycle ergometer with 100W start for men (80W for women) for 4 minutes as part of the warm-up. Then, step increment of a 50W power for men (40W for women) lasting 2 minutes each.<br>|
| Other: without neoprene suit and life jacket<br>Realization of the following examinations WITHOUT neoprene suit and life jacket : resting standard spirometry maximum exercise testing. No drug and no placebo will be used in this arm. | Diagnostic Test: resting standard spirometry<br>* The subject (seated, bust straightened) should perform, after a slow and maximum inspiration, a forced and complete exhalation followed by a new inspiration to the total lung capacity.<br>Diagnostic Test: maximum exercise testing<br>* Incremental exercise on cycle ergometer with 100W start for men (80W for women) for 4 minutes as part of the warm-up. Then, step increment of a 50W power for men (40W for women) lasting 2 minutes each.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Forced Vital Capacity (FVC in L) at rest. | spirometry at rest | 1 day | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Forced Expiratory Volume | FEV1 (in L) | 1 day | 
| Peak Flow | PF (peak flow in L/s) | 1 day | 
| mean flow rates | mean expiratory flow rates in L/ s at 75%, 50% and 25% of FVC (MEF 75, MEF 50, MEF 25). | 1 day | 
| maximal ventilation | VE (ventilation in L/min) | 1 day | 
| carbon dioxide production | VCO2 ( in L/min) | 1 day | 
| oxygen consumption | VO2 ( in L/min) | 1 day | 
| tidal volume | VT (in L) | 1 day | 
| breathing frequency | RF (in breaths/min) | 1 day | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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windsurfer, wetsuit, spirometry, cardiopulmonary exercise testing, lung function, pulmonary function, oxygen uptake