What is the Origin of Endogenous Power Reserves?

This is a descriptive, functional term derived from exercise physiology and metabolic endocrinology. 'Endogenous' emphasizes the internal origin of the fuel, while 'Power Reserves' highlights their capacity to deliver sustained energy. The concept is rooted in the biochemical pathways of gluconeogenesis, glycogenolysis, and lipolysis.

What is the Mechanism of Endogenous Power Reserves?

The mobilization of these reserves is under strict hormonal control; for instance, glucagon and epinephrine stimulate the breakdown of liver glycogen (glycogenolysis) to release glucose into the bloodstream. Lipolysis, the breakdown of triglycerides in fat cells, is stimulated by catecholamines and growth hormone, releasing fatty acids for use as fuel by other tissues. Efficient access to these reserves ensures that the body can meet acute energy demands without compromising core physiological functions, preserving systemic resilience.

Endogenous Power Reserves ∞ Area

Endogenous Power Reserves

Meaning

Endogenous Power Reserves represent the body’s intrinsic, stored forms of energy—primarily glycogen in the liver and muscle, and triglycerides in adipose tissue—that can be mobilized to sustain metabolic function and physical activity. These reserves are essential for maintaining energy homeostasis during periods of fasting, intense exercise, or acute stress. Hormonal health is intimately linked to the efficient storage and controlled mobilization of these reserves.