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Energy Systems

Altitude training, HIIT, plyometrics and SAQ

  • 3 things to know
  • Paper 1

Overview

Altitude training and its adaptations and drawbacks, live high train low, HIIT, plyometrics and the stretch-shortening cycle, and SAQ training for a rugby winger.

What you need to know

Answer each one before you reveal it.

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Key term

Why does air at altitude deliver less oxygen to the blood?

Key term

At roughly what height is altitude training usually carried out?

Key term

How does the body adapt to altitude training?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    Why does air at altitude deliver less oxygen to the blood?

    Model answer

    The partial pressure of oxygen is lower at altitude, although the percentage of oxygen is the same. The diffusion gradient into the blood is smaller, so haemoglobin saturation falls.

  2. 2

    At roughly what height is altitude training usually carried out?

    Model answer

    Altitude training is usually carried out at about 2,000 metres or more above sea level.

  3. 3

    How does the body adapt to altitude training?

    Model answer

    The kidneys release more erythropoietin (EPO). More red blood cells and haemoglobin are produced, raising the blood's oxygen-carrying capacity.

  4. 4

    Why might an endurance athlete benefit from altitude training before a sea-level race?

    Model answer

    The extra red blood cells remain for a few weeks after returning. More oxygen reaches the muscles, delaying OBLA and improving endurance.

  5. 5

    Give two disadvantages of altitude training.

    Model answer

    Training intensity must drop at first, so some fitness can be lost. The adaptations fade within weeks of returning to sea level.

  6. 6

    What does 'live high, train low' mean?

    Model answer

    Live high, train low means sleeping at altitude but training nearer sea level. The performer gains the red blood cell adaptation while keeping training intensity high.

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