Test 4 Flashcards
In high altitude conditions the percentage of oxygen ________
Remains constant
In conditions of high altitude partial pressure of oxygen _______
Decreases
Effect of altitude on solar radiation? Temperature? Vapor pressure?
Increases
Decreases
Decreases
What is the pulmonary and chemoreceptors response to high altitude
Pulmonary-increased rate and depth of ventilation
Chemoreceptors- are stimulated by low PO2
Effects of altitude on the pressure gradient for oxygen exchange
It decreases
Acute physiologic effects of high altitude exposure
Decreased plasma volume
Decreased water
Increased urination
Increased hematocrit
Chronic physiologic effects of high altitude exposure
Increased blood volume
Increased # blood cells
Increased plasma volume
Increased oxygen carrying capacity
Physiologic response in variables such as stroke volume, HR, Q
Increased
Increased
Increased
What’s happens to VO2 max during maximal/exhaustive exercise at high altitude
It decreases
What type of sports are enhanced at high altitudes
Sprinting
Jumping
Throwing activities
What sports suffer at high altitudes
Endurance activities
What are the effects on anaerobic events lasting less than two minutes
They are not impaired
What are the effects on metabolism, body weight, appetite at high altitudes
Increased
Decreased
Decreased
What is the substrate that the body relies on during exercise compared to at rest
Carbohydrates
Living at high altitudes, training at low altitudes. What effect on performance?
It improves performance at sea level
What are the training strategies for competing at high altitude
Train 2-3 weeks to be fully acclimated
What are the signs of acute mountain sickness
Headache Impaired vision Insomnia Nausea Interrupted breathing pattern