Environmental effects on body systems

Question 1

EQ. Define what is meant by ‘acclimatisation to high altitude’ and state one sporting activity in which
performers would benefit from it. (2 marks)

Answer 1

• adapting to the lower oxygen levels

- in football/ marathon

Question 2

EQ. Describe the short-term effects of performing at high altitude on the cardiovascular and
respiratory systems. (4 marks)
Cardiovascular…
Respiratory…

Answer 2

cardio. ..
- decrease in blood volume
- decrease in stroke volume
- increase in heart rate
resp. ..
- lower partial pressure of oxygen (ppO2) in inspired air
- tidal volume increases
- breathing rate increases