Extended Response Energy System Interplay question

[louispilgrim]

Does any one have a formula or a way to solve questions like this. We get given a scenario and have to comment on the energy system interplay and they are always worth 7-10 marks. I find these questions the most difficult.

[Random_Acts_of_Kindness]

Throughout the all sports all the energy systems are always contributing at varying degrees at all times including a sport like: [Insert Sport].

For the first 5 seconds when the athlete is performing [Insert Action] the surfer would predominantly be using the breakdown of ATP and CP to fuel the activity because it is high intensity and short duration and requires a fast rate of energy production.
After this the anaerobic glycolysis system will begin to dominate as the activity is continued at high intensity, for example [Insert Action] is being completed. This will continue from the 10 sec till the 20 sec point, as the energy required for the explosive movements incomplete breakdown of glucose and there is not time to recharge the ATP-PC system.

As the duration of the activity is [Insert Time] this also indicates an important reliance on the aerobic energy system for energy to perform muscular contractions. The athlete is required to [Insert Action] which occurs at a slightly lower intensity and continuous. While waiting the aerobic energy system is also partially recovering the intramuscular ATP and CP stores for other high intensity bouts like the tricks.

And so as the activity progresses the activity stops being an all out maximal effort and the importance of the anaerobic system diminishes, and the body relies largely on the aerobic system.

 

[Dantini]

This is the way I structure mine, say for a 6 point response discussing interplay in a 1500m race.

At the beginning of the race (start line), the aerobic system is used for energy production, although heart rate may increase due to nervousness/anxiety [1 Mark]

For the first 8-10 seconds of the race, the ATP-PC System will be dominant +explanation [1 Mark]

After this point, the ATP PC system is exhausted and given the oxygen deficit anaerobic glycolosis takes over (between 10-60/90 seconds) as the dominant source of energy production until sufficient V-O2 levels can be reached (at this point, oxygen supply does not meet demand, so excess energy is produced anaerobically) [2 marks, one for identifying anaerobic glycolosis and one for explaining why it must be anaerobic]

Following this, the aerobic system takes over (around 60-90 seconds into the race), and remains dominant until the final length of the event, which is often sprinted, at this point the proportion of energy produced by the anaerobic glycolosis system would increase, but the aerobic system would remain dominant. [1 mark]

All three energy systems are constantly contributing to energy production at all times, and that their concentration varies depending on intensity and duration. [1 Mark]

A pretty simple structure but you can adapt it to most events, you will generally get interplay questions for aerobic events anyway, if it's a longer distance one you may have to mention the switch between anaerobic glycolosis and lipolosis (between glycogen and fats) as the predominant source of aerobic energy, and if it's shorter, you might have to talk more about an accumulation of H+ ions and the inhibiting effects on glycolytic enzymes as a result.
Hope this helps - Dantini

[Smiley_]

That's good.
Just remember to include a few specific details about the event eg” in the first pass of the netball” instead of just saying “at the start of the game”