INTERPLAY OF ENERGY SYSTEMS

Question 1

interplay of the energy systems

Answer 1

The energy systems do not work in isolation. The way they work together is referred to as interplay.
- Energy systems are not switched on or off, but instead increase and decrease their contributions.
- At the start of any event, all 3 systems will contribute with ATP resynthesis.

Question 2

ATP production at rest

Answer 2

When at rest, your body’s demand for ATP is low and it has an abundant oxygen supply, so the energy required for the resynthesis of ATP is provided almost exclusively by the aerobic energy system. In this state, your body relies on the breakdown of fats to provide about two-thirds of the energy required with the remaining one-third coming from the breakdown of carbohydrates.
- There is very minimal contribution from the two anaerobic systems.

Question 3

ATP production during exercise

Answer 3

Here is no exact or definitive point where one energy system drops off and another energy system becomes the major energy supplier. Rather, there is a gradual transition from one system being the major supplier to another system assuming the primary contribution to ATP resynthesis.
- Energy system interplay requires an assessment of key factors such as intensity and duration to accurately determine the ATP contribution of each system overall, and at specific moments within sport and exercise.

Question 4

Exam tip: ALWAYS SAY THESE THINGS!

Answer 4

1.All three energy systems work together to resynthesize ATP from the start of an event, however their contributions differ (1 mark)
2.The largest contributor of ATP for an event will depend on the intensity
3.The order of the system contribution from the start of an event does not differ
4.Provide eg. of activities where each system is the largest contributor (team sports)