Fatigue and recovery mechanisms

[Nafisah.991]

Need help with answering a few questions. Not really understanding them.

What is the trade off between fuel restoration and conducting an active recovery to facilitate metabolic by product removal?
The oxygen deficit or the 800 m and 1500 m running events would be very similar. How is this possible?

Thanks

[howey]

What is the trade off between fuel restoration and conducting an active recovery to facilitate metabolic by product removal?

Basically, performing an active recovery will increase/assist with the removal of metabolic by-products, such as H+ ions, by ensuring increased oxygen supply to the muscles. However, an active recovery means that the restoration of PC will not be as efficient as if a passive recovery was used, as PC restores best when no physical activity (e.g. sitting still/a passive recovery) is used. Therefore, active recoveries are best for removing metabolic by-products, but a passive recovery is best for fuel restoration, specifically PC.

The oxygen deficit or the 800 m and 1500 m running events would be very similar. How is this possible?

Oxygen deficit occurs at the start of exercise, when the oxygen demands of the body are greater than the oxygen supply (basically when the cardiovascular and respiratory system are still 'warming up' - but don't use that terminology in a SAC/exam). As the 800m and 1500m are both middle/longer-distance events, oxygen deficit will occur for both of them similarly until the aerobic energy system is able to become dominant. As they are longer in duration, both will experience similar oxygen deficit because oxygen deficit will usually only last for around 30 seconds, and both of these events go for longer than that. I hope that makes sense

I hope this helps!

[Nafisah.991]

Thank you.
Explained very well