Energy Systems

ATP

Made up of an adenosine molecule with three phosphate molecules attached, it releases energy when one phosphate molecule breaks off.

Energy Systems

Three pathways responsible for ATP resynthesis - ATP-PC system, Anaerobic Glycolysis, and Aerobic system.

Food Fuels

Carbohydrates, fats, and proteins are used to create ATP for muscle contractions.

Carbohydrates

When digested, it is broken down to glucose for blood transportation and then stored as glycogen in the muscles and liver.

ATP & ADP

ATP stores energy for muscle contractions, releasing energy when a phosphate molecule breaks off to form ADP.

ATP-PC Energy System

Immediate, high-energy system lasting 0-10 seconds, using creatine phosphate to resynthesize ATP. After 5 secs = 50%. After 30 secs = 70% replenishment. 8-10 mins for 100%

Fats

broken down into either fatty acids, which are found in adipose tissue and the blood, or triglycerides which are stored in the muscle.

Protein

used for growth and repair of the body. Stored in muscles and around the body

At rest

Both fats 1/3 and carbohydrates 2/3

Submaximal

Carbs for Long duration + light to moderate intensity. After 90 mins, glycogen depletes and fat becomes main source

Maximal

Carbohydrates are also the main supplier of energy required for exercises of short duration and high intensity.   

Anaerobic glycloysis system

(10-60) seconds - 2 min . Glucose is broken down to produce ATP (Lactic Acid). Energy for short term high intensity. Fast Twitch

Aerobic System

Largest Capacity with most amount of ATP. slowest to contribute. Carbs and Fats. Long term- low to moderate exercise.

Energy System Interplay

contribution of aerobic, anaerobic glycolysis and ATP systems.

Anaerobic/aerobic capacity

Total amount of ATP (yield)

Anaerobic/aerobic power

Rate at which an energy system can produce ATP