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Energy Substrate Allocation

Meaning

Energy Substrate Allocation is the precisely regulated physiological process by which the body dynamically directs and distributes its available metabolic fuels—primarily glucose, fatty acids, and amino acids—to different tissues and organs based on their immediate and long-term energetic requirements. This dynamic partitioning is absolutely critical for balancing energy storage, such as glycogen and fat deposition, with immediate energy utilization for essential functions like muscle contraction and neural activity. Hormonal signals serve as the primary orchestrators of this allocation, profoundly influencing overall metabolic efficiency and long-term body composition.