Question

When an athlete first starts to exercise, her initial energy needs are provided primarily by the aerobic energy system.

Options:
a. True
b. False

Answer 1

False. An athlete's initial energy needs are primarily provided by the anaerobic energy systems, not the aerobic energy system.

Step-by-step explanation:

False. When an athlete first starts to exercise, her initial energy needs are provided primarily by the anaerobic energy systems, specifically the phosphocreatine system and the anaerobic glycolysis system. The phosphocreatine system provides the initial burst of energy for high-intensity activities, such as sprinting, while the anaerobic glycolysis system breaks down glucose to produce ATP without the need for oxygen. The aerobic energy system, which relies on oxygen, takes longer to activate and becomes the primary energy source for sustained activities, such as running a marathon.