lesson 04: ENERGY SYSTEMS

•Phosphagen system – anaerobic process; absence of molecular oxygen
•Glycolytic system – Fast Glycolysis (anaerobic) & Slow Glycolysis (aerobic)
•Oxidative system – Aerobic process; needs molecular oxygen

Only Carbohydrates can be metabolized for energy without oxygen

What determines the extent to which each energy system is used during a specific activity

Anaerobic – no molecular oxygen present
•Provides ATP for high-intensity activities like lifting weights, sprinting, throwing
•Active at the start of ALL exercise
•Immediate source of ATP
•Provides energy at a high rate

Primary reactions:
•ATP………………..ADP + Pi + energy
•Creatine + Pi ………..creatine phosphate
•ADP+creatine phosphate…ATP+creatine

Provides energy for moderate to high-intensity activities.
•Glycolysis is the breakdown of_CHO___.
•Either glycogen stored in the muscle or glucose delivered in the blood to produce ATP.
•Nine chemical reactions take place in the _sarcoplasm___________ of the cell

•Provides ATP at fast rate
•Anaerobic
•Primarily active when there is a high rate of energy demand
•Pyruvate is the end product of Glycolysis.
•No Oxygen Present: Pyruvate converted to Lactic Acid.

•2 ADP ………. ATP + AMP