Describe the acute effects of high altitude on the cardiovascular and respiratory systems
Decreased partial pressure of O2 in the air means that the diffusion gradient between the alveoli and surrounding capillaries is reduced. Hence there’s a decreased haemoglobin and oxygen association in the blood so decreased oxygen transport to the working muscles. Hence less oxygen is available for aerobic energy production. Resulting in increased breathing frequency and heart rate and decreased stroke volume. So the performer will have a decreased VO2max, aerobic capacity, intensity and duration of aerobic performance before fatigue sets in.
EM
Answered by Ellie M. • Physical Education tutor
2543 Views
See similar Physical Education A Level tutorsRelated Physical Education A Level answers
All answers ▸Explain how during a game of a rugby, an increase in blood Co2 will cause heart rate to rise (4 marks)
Name the 3 types of muscle fibres and explain the role of each.
What are the characteristics of a person suffering from Learned Helplessness?
Identify four different types of attribution proposed by Weiner’s attribution model and give a practical example for each type identified.