Olympic Athlete Asthma & EIB Physiology Simulator

Physiology Controls Live Parameters

Select Olympic Sport Profile

Minute Ventilation ($V_E$) 160 L/min

Rest (10) Sub-Max (100) Elite Peak (200)

Ambient Air Temperature -5 °C

Freezing (-10°C) Moderate (15°C) Hot (35°C)

Relative Humidity ($RH$) 20 %

Arid (10%) Standard (50%) Humid (90%)

Therapeutic Use Exemption (TUE) Inhaled $\beta_2$-Agonist Bronchodilator (e.g. Salbutamol)

XC Skiing | Constriction: High

Airway Smooth Muscle

Submucosal Edema

Mucus Coating

Inhaled Air Flow

Airway Resistance ($R_{aw}$)

12.4 $\text{cmH}_2\text{O/L/s}$

Baseline: 1.5

Predicted $\text{FEV}_1$ Drop

-28.5 %

EIB Clinical Cutoff: -10%

Mucosal Water Evap

1.42 g/min

Thermal/Osmotic Trigger

EIB Risk Status

Severe

Bronchospasm Active

Simulator Status: Cross-Country Skiing Active | $V_E$ = 160 L/min | $R_{aw}$ = 12.4 $\text{cmH}_2\text{O/L/s}$ | $\text{FEV}_1$ Drop = -28.5%

IOC Medical Commission Sport Prevalence Matrix

Verified asthma & EIB diagnosis incidence rates across Summer & Winter Olympic sports

Sport / Discipline ↕	Season ↕	Asthma/EIB Prevalence ↕	Hyperpnea Level ↕	Environmental Factor ↕	Action

The Hyperpnea Osmotic Mechanism

At rest (10 L/min), nasal passages warm and humidify air to 37°C and 100% RH. During intense exercise (150–200 L/min), mouth breathing bypasses nasal conditioning. Dry cold air reaches deep bronchi, vaporizing mucosal surface fluid, causing hyperosmolar mast cell degranulation and histamine/leukotriene release.

Poiseuille Law & Airway Resistance

Airway resistance ($R_{aw}$) is inversely proportional to the 4th power of the lumen radius ($R_{aw} \propto 1/r^4$). Even a modest 30% reduction in bronchial radius increases resistance by over 400%, leading to severe dyspnea and measurable $\text{FEV}_1$ drop.

TUE & WADA Anti-Doping Framework

Inhaled $\beta_2$-agonists (Salbutamol, Formoterol) selectively relax bronchial smooth muscle without performance enhancement in non-asthmatic athletes. WADA guidelines allow therapeutic doses with standard medical documentation, restoring normal lumen caliber.