ilikeschool's questions

[transgression]

VO2 max = aerobic capacity (capacity of an individual's body to transport and utilize oxygen)
The numbers are the measures of which a normal athlete may receive when testing their VO2 max. This is usually tested under lab conditions and my friend was lucky enough to get her VO2 max tested.

Average untrained athlete may have a 45 VO2 max, and trained athletes have around 75 (but many go up to 90 or so). It is important to note that females and males will have different capacity ranges

[transgression]

Haha, you guys posed while i was typing as well

[transgression]

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 ?

I assume so. I think there was a table in Nelson....
By the way chodadude, I'm using Nelson, but also have Live It Up

[mtwtfss]

Yeah i'm using Smyth, but also use Malpeli...each are better for different topics IMO.

And yes you need to know the different aspects of different weights training programs, its quite easy really.

I promise you will need to know the table in some way for the exam.

Power, LME & Strength.

Freq, reps, weights, speed....

[transgression]

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I don't really understand part A, but I do for part B as I got this part right. 
The answer for part A was: "There is a finite capacity for oxygen deficit which is reached (or almost reached) in these three events." 

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Hmmmmmmmmmmmmmmmmmmmmmmmm?

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I need help with answering this, as I have no idea what type of action it is. Also, do we need to know the type of actions for the exam? I don't remember reading anything about this.

Thankies

[melaniej]

OK, for the first one:

They all have the same oxygen deficit because the oxygen deficit occurs when an athlete works anaerobically. Because the anaerobic systems have a finite capacity, they all use their anaerobic systems for the same duration... does that make sense?
So they all switch over to aerobic once the anaerobic is exhausted, and because they are all sort of middle distance events, they are all likely to switch over to their aerobic system during their event, hence having the same amount of oxygen deficit.

[melaniej]

The second question:
more energy is released aerobically than anaerobically is basically because there is oxygen present.
With oxygen present, means that further breakdown of the glucose can occur.
Do you have the answers for that question? I'm not quite sure how much depth you would need to go into for 2 marks.

[melaniej]

The third one:
Its an isotonic contraction. I think that might be it.
Further depth its a concentric isotonic contraction because the abdominal muscle is shortening.

As for knowing them for the exam, I think we may need to know the 3 different types
 - isometric = no change in muscle length eg pushing against a wall, gripping a tennis racket
 - isotonic = change in muscle length, concentric = shortens eg bicep in a bicep curl and eccentric = lengthening e.g. tricep when conducting a bicep curl
 - isokinetic = same force throughout the whole movements - can only be done with a machine

I'm pretty sure we do need to know it!

[melaniej]

hmm on second thoughts... the answer could be flexion? because it's asking the 'action' of the truck...
but i have no idea!
where are these questions from / do you have the answers?

[transgression]

Second question answer: Because the molecule is not fully broken down. The lactic acid produced in anaerobic glycolysis still contains some energy.

Third question answer: Flexion
I thought it was the the types as well (the ones you listed).

Thanks for you help

[melaniej]

oooh yep. For the second question, because there is no oxygen present, then the molecule can't be fully broken down, hence the waste products etc etc
Awesome

[ausyid]

Re Question 2:

Glycolysis is the conversion of Glucose into Pyruvic acid to form ATP (2 molecules). In aerobic glycolysis, the oxygen allows the pyruvic acid to be converted into ATP (another 36 molecules) in the mitochondria. If there is no oxygen present then the pyruvic acid is merely converted into lactic acid, however when oxygen becomes available the LA can be eventually removed and converted into energy aswell.

Hope that makes sense.

[russdog]

Re Question 2
Anaerobic glycolysis breaks the glucose down forming pyruvic acid and 2 ATP molecules becuase there is no oxygen present the pyruvic acid is transformed into lactic acid
Aerobic glycolysis breaks the glucose down forming pyruvic acid and 2 ATP molecules then because oxygen is present its is able break the pyruvic acid down further producing 36 ATP molecules

Re Question 3
Its definitely flexion because the questions asking u for the action of the trunk not the muscular contraction from position 1 to position 2. Usually PE questions are pretty basic and dont need to be analysed to heavily.

[transgression]

Thanks!

I have a few other questions. Can someone please explain the concept of:
- Athletes having the ability to work at a intensity greater than 100% of their Vo2 max
- How you would work out the work:rest ratio if given a table with information
Ie,
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[melaniej]

VO2 Max. This is the one that always stumps me. I understand it in my head, but I can never write it out.

Ok, so an athlete working above their VO2 max, must be working anaerobically, as VO2 max is in reference to oxygen. The body is uptaking, transporting and utalising as much oxygen as it can, so to produce higher intensities it must switch to the anaerobic system.