ilikeschool's questions

[transgression]

Hey guys, I would be greatly appreciated if someone helped be with a question or two. PE isn't my forte, and I wish to improve by asking as many questions as I can (similar with the method threads).
I just finished the '07 vcaa paper and I came across something that I didn't really understand.
[IMG]http://img93.imageshack.us/img93/272/pehelpyr7.th.jpg[/img][IMG]http://img93.imageshack.us/images/thpix.gif[/img]

After reading the examiner's report, it made [some] sense, but I was wondering how you could tell if line A was "Total energy supply". (I now understand line C)

I know I will be asking more questions in the upcoming week, and during this study break.
Thanks!

[cara.mel]

Line A is the sum of the other three. I hope that helps in some way

[mtwtfss]

Hey, i'm doing PE as well this year... so ask me as many questions as you can,.

Yeah A is the total energy supply.

It is simply a graph you would have seen in your textbook some where, just in this instance they've removed the labels which describe each line.

Which textbook are you using?

Chad.

[Collin Li]

Line A is the sum of the other three. I hope that helps in some way

Line A and Line D look the same, so use caramel's finding to conclude that A is the total energy supply, and D must be one of the components of energy supply? (Knows nothing about P.E. - knows something about logic and the learning process )

[mtwtfss]

Line A is the sum of the other three. I hope that helps in some way

Line A and Line D look the same, so use caramel's finding to conclude that A is the total energy supply, and D must be one of the components of energy supply? (Knows nothing about P.E. - knows something about logic and the learning process )

Line A= Total Energy Supply
Line B= Aerobic System Contribution
Line C= ATP-PC System Contribution
Line D= Lactic Acid System Contribution

If you got that right, be happy because only 10% of people last year got full marks for that part of the question! I think most people would've just rushed reading the graph, and therefore misinterpreted it.

And why does it follow each other (A and D)... The Aerobic System has hit its max.
The ATP-PC system is depleted.
So therefore the only energy available to be produced is from the Aerobic System, which has steadied, and whatever the LA system can produce on top of that.
Similar to the question of...how can an athlete work at above 100% V02 max? If you can answer that, that should help.

[melaniej]

So, if an athlete can work above their VO2 max, does that mean they are working anaerobically?
I kind of understand why/how it happens, but struggle so much when putting it into words...

[mtwtfss]

Yes, when they use the anaerobic energy systems in addition to the aerobic system you are able to work at levels above V02 max.

Tends to be the LA system, because the ATP-PC system has not had time to replenish its PC stores.

Also, make sure you know what V02 max levels are usually associated with different types of athletes, not exactly right, just a brief understanding.

[melaniej]

just that higher vo2 max = endurance athletes using aerobic system and all that? not like the exact numbers?

[mtwtfss]

You need to know roughly the exact numbers.

e.g. give me a figure for the V02max for an endurance athlete, and also a cardiac patient.

[melaniej]

Hmm, endurance athlete should have ~60+

And cardiac patient maybe....35-40 ish ??

[mtwtfss]

Pretty much yeah..

Really good endurance athletes e.g. freak kenyans and lance armstrong have upto 90ish

But you know enough.

[melaniej]

awesome!


well. complete change of topic, but... in regards to weights/resistance training, do we need to know all the %RM, and how to train all the specific components
i.e the number of sets/reps for LME vs Muscular Power?

cos I've seen past questions about having to identify problems with the program and how to correct it, but yeah not quite sure about this one ?

[jess3254]

Hmm, endurance athlete should have ~60+

And cardiac patient maybe....35-40 ish ??

I don't do physical education, but what do these numbers refer to? I am interested to know lol.

[melaniej]

VO2 maximum:
the maximum amount of oxygen that can be taken up, transported and utalized (extracted by the muscles) per minute. Expressed in mL/kg/minute.
So it's pretty much the athletes aerobic capacity.
A higher VO2 max is better...
I think I've covered most things?

[mtwtfss]

V02 max, the max amount of oxygen that can be taken up, transported and utilised per minute.

Measured in ml/min/kg.

The average untrained male has about 45.

Females 38.

The best in the world is around 96, and is recorded by cross-country skiers.


Yeah good work mel, you posted while i was typing!