Chapter 3.2

Glycolytic System

Synthesizes ATP from glucose or glycogen and becomes active after 30 seconds.

ATP (Adenosine Triphosphate)

A high-energy molecule that stores large amounts of energy in its chemical bonds.

Phosphagen System

An energy system that replenishes ATP for short, high-intensity efforts, lasting 0-6 seconds.

Muscle Glycogen

Storage form of glucose found in muscle cells.

Pyruvate

End product of glycolysis that is produced from glucose during ATP synthesis.

Anaerobic Processes

Metabolic processes that occur without oxygen, such as glycolysis.

Creatine Phosphate

A molecule that helps replenish ATP during short bursts of high-intensity exercise.

Lactic Acid

Product formed when pyruvate is converted due to lack of oxygen.

Energy Systems

Three systems that exist to replenish ATP: Phosphagen, Glycolytic, and Oxidative.

Bioenergetics

The flow of energy in a biological system, converting food into energy.

Glycogen Stores

The body's limited reserves of glycogen, approximately 300-400g in muscles and 70-100g in the liver.

Event Duration and Energy System

Describes how different intensities and durations of activity impact the primary energy system used.

Oxidative System

An energy system that is utilized for longer duration, low-intensity activities, lasting over 3 minutes.

Carbohydrates

The primary macronutrient source for the glycolytic system for synthesizing ATP.

Muscular Activity

Requires a constant supply of ATP for muscle contractions and growth.

Glycolysis

The metabolic pathway that converts glucose into pyruvate, producing ATP in the process.