HMS, BM EQ-Bank 178 MC

A netball player performs a 30-second high-intensity defensive sequence followed by 2 minutes of moderate-intensity play.

Which energy system sequence best represents this activity pattern?

ATP-PCr → Aerobic → Lactic Acid
Lactic Acid → ATP-PCr → Aerobic
ATP-PCr → Lactic Acid → Aerobic
Aerobic → ATP-PCr → Lactic Acid

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\(C\)

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C is correct:
- ATP-PCr is first used for the immediate high-intensity defensive moves (0-10 seconds)
- then the lactic acid system is used for continued high-intensity work (10-30 seconds)
- finally the aerobic system is relied upon for the moderate-intensity play (30 seconds onwards).

Other Options:

A is incorrect: Aerobic would not be the second system engaged
B is incorrect: Lactic acid system would not be first in this sequence
D is incorrect: Aerobic would not be first for high-intensity work