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

2038 Views

See similar Physical Education A Level tutors

Related Physical Education A Level answers

All answers ▸

Define anxiety and explain how state anxiety can affect sports performance.


Describe the cardiac cycle


The diagram below shows a spirometer trace of an athlete at rest. Complete the table to identify the type of lung volumes A,B and C show in the diagram.


With reference to a named psychological theory, outline how the negative attitude of an individual or of a team can be changed. 4 marks


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning