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WorksheetsHigh Altitude and Sport Performance: Multiple Choice Quiz
Total questions: 20
Worksheet time: 10mins
What is the primary environmental challenge at high altitude?
Increased oxygen availability
Decreased oxygen availability
Increased air pressure
Higher humidity
Which initial physiological response occurs when an athlete moves to high altitude?
Decrease in breathing rate
Increase in heart rate and ventilation
Reduction in red blood cell production
Lower lactate levels
What long-term adaptation helps athletes cope with high altitude?
Increased plasma volume
Increased red blood cell count and hemoglobin concentration
Reduced capillary density
Decreased mitochondrial efficiency
How does altitude training typically affect aerobic performance at sea level?
No effect
Improves aerobic capacity due to enhanced oxygen transport
Reduces aerobic capacity permanently
Only benefits anaerobic performance
What is the principle behind "Living High, Training Low"?
Athletes live at sea level and train at altitude
Athletes live at altitude to adapt and train at lower altitude for intensity
Athletes live and train at high altitude
Athletes live at low altitude and train at sea level
Which method replicates altitude adaptations at sea level?
Heat acclimation
Hypoxic training
Hyperbaric chamber training
Cold exposure
What is considered "High Altitude"?
500–1500 m
1500–3500 m
3500–5500 m
Over 5500 m
Why does oxygen availability decrease at altitude?
Oxygen percentage drops below 10%
Air pressure and density decrease, spreading oxygen molecules farther apart
Carbon dioxide levels increase
Humidity reduces oxygen absorption
Which initial physiological response occurs at altitude?
Reduced breathing rate
Hyperventilation
Lower heart rate
Increased stroke volume
What happens to body fluids during hyperventilation at altitude?
They become more acidic
They become more alkaline
No change occurs
They retain more CO₂
How does altitude affect VO₂ max?
It increases by 2% every 300 m above sea level
It decreases by 2% every 300 m above sea level
It remains constant
It only changes above 5500 m
Which hormone increases at altitude to support cardiovascular function?
Insulin
Noradrenaline (Norepinephrine)
Cortisol
Growth Hormone
What is hypoxia?
A condition of high oxygen levels in tissues
A condition of low oxygen levels in body tissues
A condition of high carbon dioxide levels
A condition of low blood pressure
Which of the following is NOT a common short-term response to altitude?
Increased urination
Disrupted sleep
Increased stroke volume
Strange dreams
What is the main effect of catecholamine release at altitude?
Decreased cardiac output
Increased cardiac output and blood pressure
Reduced blood glucose levels
Lower muscular contraction force
Which cardiovascular change occurs during initial exposure to altitude?
Decrease in resting heart rate
Increase in resting blood pressure and submaximal heart rate
Increase in stroke volume
Decrease in cardiac output
How does the respiratory system respond to altitude?
Reduced breathing rate to conserve oxygen
Hyperventilation to increase oxygen intake
Increased CO₂ levels in body fluids
No significant change
Which nervous system receptors detect reduced oxygen pressure at altitude?
Baroreceptors in the heart
Chemoreceptors in the aortic arch and carotid arteries
Thermoreceptors in the skin
Mechanoreceptors in the lungs
What is the role of the endocrine system during altitude exposure?
Increased insulin secretion
Increased catecholamine release (noradrenaline)
Reduced cortisol levels
Increased growth hormone only
Which effect is associated with catecholamine release at altitude?
Lower blood pressure
Increased cardiac output and peripheral vasoconstriction
Reduced muscular contraction force
Decreased blood glucose levels
