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Energy Systems

The energy continuum and priming exercise

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  • Component 1

Overview

The energy continuum and thresholds, the 100 m, 200 m, 400 m, 800 m, 1500 m, 5,000 m and marathon, the football midfielder and intermittent recovery, and priming exercise and the timing of a sprinter's warm-up.

What you need to know

Answer each one before you reveal it.

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Key term

How do the three energy systems work together in a 1500 m race?

Key term

What is the energy continuum?

Key term

Why is it wrong to say that one energy system works on its own?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is the energy continuum?

    Model answer

    The energy continuum shows how the three energy systems share ATP resynthesis across different activities. An activity's position depends on its intensity and duration.

  2. 2

    Why is it wrong to say that one energy system works on its own?

    Model answer

    All three energy systems work at the same time throughout any activity. The continuum shows which system is dominant, not which is working alone.

  3. 3

    What is meant by an energy system threshold?

    Model answer

    A threshold is the point at which one energy system can no longer be the main supplier of ATP. The next system then becomes dominant.

  4. 4

    Where does the 100 m sprint sit on the energy continuum?

    Model answer

    The 100 m sits at the anaerobic extreme of the continuum. The ATP-PC system is dominant, with a glycolytic contribution in the final metres.

  5. 5

    Where does the 400 m sit on the energy continuum, and why?

    Model answer

    The 400 m lasts about 45 to 60 seconds at near-maximal intensity. The glycolytic system is therefore the dominant provider.

  6. 6

    Where does the 800 m sit on the energy continuum?

    Model answer

    The 800 m sits near the middle of the continuum. The glycolytic and aerobic systems both make large contributions.

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AThe training zone is 136 to 158 bpm.
BHeart rate reserve = (220 − 40) − 70 = 110 bpm.
CLower limit = (110 × 0.6) + 70 = 136 bpm.

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