CCEA A-Level Sports Science and the Active Leisure Industry 7210
Components of Fitness
Training Methods
Fitness Testing
Fitness Programmes and Exercise Sessions
Safety and Risk Assessment in Training
The Active Leisure Industry
Lifestyle and Health
Nutrition for Health and Exercise
Enhancing Fitness
Safety in the Active Leisure Industry
Barriers to Participation
Health of the Nation
Components of the Leisure Industry
Planning an Active Leisure Event
Teamwork and Running an Event
Evaluating an Active Leisure Event
The Respiratory System
The Cardiovascular System
The Skeletal System
The Muscular System
Effects of Exercise on Body Systems
Ethics in Sports Performance
Skill Acquisition
The Respiratory System
Altitude training for endurance athletes
- 3 things to know
- A2 2
Overview
Low oxygen partial pressure at altitude, acclimatisation, Iten and other bases, live high train low, altitude tents, benefits and timing, altitude sickness, dehydration, iron and the 1968 Olympics.
What you need to know
Answer each one before you reveal it.
Why is less oxygen available at altitude?
How does the low partial pressure of oxygen affect an athlete on arrival at altitude?
Questions from this subtopic
Each one with the model answer underneath.
- 1
What is altitude training?
Model answer
Altitude training is training or living at high altitude, usually above about 2,000 m, where the partial pressure of oxygen is lower. The aim is to improve oxygen transport and endurance performance.
- 2
Why is less oxygen available at altitude?
Model answer
Barometric pressure falls with altitude, so the partial pressure of oxygen falls too. The air is still about 21% oxygen, but each breath delivers fewer oxygen molecules.
- 3
How does the low partial pressure of oxygen affect an athlete on arrival at altitude?
Model answer
The diffusion gradient at the alveoli is smaller, so haemoglobin is less saturated with oxygen. Less oxygen reaches the muscles, and heart rate and breathing rise to compensate.
- 4
Explain the main physiological principle behind altitude training.
Model answer
Low oxygen levels stimulate the kidneys to release the hormone erythropoietin (EPO). EPO increases red blood cell production, raising the haemoglobin content of the blood.
- 5
What is acclimatisation?
Model answer
Acclimatisation is the gradual adjustment of the body to reduced oxygen at altitude. Acclimatisation takes several weeks, so altitude camps commonly last three to four weeks.
- 6
Name three well-known altitude training locations.
Model answer
Iten in Kenya, Flagstaff in Arizona and St Moritz in Switzerland are well-known altitude training bases. Each sits roughly 1,800 to 2,400 m above sea level.
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