... for short drives around the circle, would use more lactic as they are allowed in two thirds of the court and would do more longer drives than the goal keeper. (Ashfield, 2004). Another example of the energy systems in netball is the centre and the goal shooter. The centre uses a lot more of the oxygen system, which is used to keep up a medium intensity for long periods of time, because the have to move all over the court and continuously drive for the ball. They need to be able to keep going for at least one quarter (fifteen minutes) at any one time. They also use more Lactic (for going at a fairly high intensity for longer) because the do a large number of longer drives. In contrast to the centre the goal shooter uses mainly ATP-PC because they are confined to one third of the court and ...

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