Lung health Flashcards
Review of lung disorders and the effect that PA has on them
How long does a RBC spend in lung capillaries at rest?
0.75 seconds
When is equilibrium between lung and blood reached at lung at rest?
Within 0.25 seconds
How does COPD and asthma affect how long a RBC spends in lung capillaries?
Increases time
How does exercise affect the circulatory system?
Increases cardiac output, increases plasma volume, increases oxygen uptake, increases blood vessel function, decreases oxygen demand of cardiac muscle, decreases blood viscosity, decreases blood pressure, increases metabolic control
How does exercise affect hypertension?
Decreases risk by 50%, causing a 7mmgHg fall in blood pressure
What principles influence adaptations?
FITT, resistance training, endurance training; progressive overload; reversible and transient; individual response
How many people suffer from asthma worldwide?
300 million
What is asthma?
Inflammation and increased sensitivity of bronchi
What is exercise-induced bronchoconstriction?
Not necessarily clinical asthma suffers, but caused typically by air breathed in through mouth during PA not being warmed and humidified
How can exercise help asthma sufferers?
Increases lung function, decreases worry about attacks, increases confidence, weight loss
What does COPD stand for?
Chronic obstructive pulmonary disease
What is COPD?
Any condition where airways and/or lung tissue is damaged
How many people in the UK suffer from COPD?
1.6%
How much does COPD cost the NHS?
£1.2 billion/year
How does exercise help COPD sufferers?
Increased O2 uptake by increasing aerobic capacity etc; decreases minute ventilation, hyperinflation, dyspnoea; reduces FEV1; improves cardiac function; positively affects multiple co-morbidities
