The major energy system used during 30 to 60 seconds of maximal intensity exercise is:

Name: The major energy system used during 30 to 60 seconds of maximal intensity exercise is:
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During 30 to 60 seconds of maximal intensity exercise, the body primarily relies on anaerobic glycolysis for energy production, as the ATP-PCr system is predominant in the first 10 seconds and aerobic metabolism takes over from around 2 minutes onward.

The Major Energy System Used During 30 to 60 Seconds