When the athlete first starts to move the alactacid energy system will be used to provide most ATP, while the aerobic system begins to produce ATP by breaking down glycogen and fats. After the first few seconds, the alactacid system will decrease its production of ATP and the lactic acid system will produce most of [...]
https://youtu.be/2vtgHDqhBxw?si=mNBu2XxQ8hB6nYvy ATP and the Aerobic Energy System All energy systems are about creating ATP. The faster you create ATP the larger the workload you are doing. If you can use the aerobic energy system to create that ATP you will have less bi-products and therefore less fatigue. For example, if I can run at 18km/h [...]
The short answer is no. Although there are many websites that talk about training thresholds using the word limit in their definition but there are in fact no limits. A limit means you cannot go past it, so the only real limit would be found in a VO2max test, which makes you perform at your [...]
Cardiac output is the amount of blood pumped out of the heart per minute and therefore will vary depending on the intensity of the exercise. It is calculated as the stroke volume multiplied by the number of heartbeats per minute. I have seen a blog here saying the elite athlete's CO goes down at rest, but [...]
This week I had an email asking me if leg swings are an example of dynamic stretching or ballistic. The answer was not a simple yes or no. As a teacher, I would normally through this out to my students as a debate. See if they can work it out. But here is some of the [...]
This answer is provided by Malakai Seuao in response to the question Describe the effect of stroke volume and cardiac output on aerobic performance. 3 Marks from the 2013 HSC PDHPE Exam Stroke volume and cardiac output help with aerobic performance because they help circulate the blood around the body which carries oxygen and nutrients [...]
In the 2017 HSC PDHPE exam, question 25 was worth 7 marks and asked: "Compare TWO different energy systems by exploring their duration, sources of fuel and causes of fatigue. Use examples to support your answer." Below is a sample answer for this question provided by Melissa. As always remember to use the NESA marking guidelines [...]
This sample answer is a response to question 27 from the 2014 HSC PDHPE exam "Compare the two anaerobic energy systems." worth 5 marks. The answer is provided by Melissa. As always, I encourage you to read through this answer and compare it to the sample answer provided by NESA along with the marking criteria (here and [...]
As a big advocate for the flipped learning approach, one thing that I encourage all students to do in order to maximise classroom learning is to do the easy stuff before entering the classroom. With the flipped learning approach, students will generally be introduced to the content of the syllabus in their own time. This [...]
Examine the relationship between physiological adaptations and improved performance resulting from anaerobic training comes from HSC PDHPE syllabus under Factors Affecting Performance, How does training affect performance? - Physiological adaptations. The Learn to asks you to examine the relationship between the principles of training, physiological adaptations and improved performance. The information below goes some way to helping [...]