UNIT 2 PHYS ED 32

CARDIORESPITORY ENDURANCE

VO₂ Max

The Maximum amount of oxygen Consumption, can improve by 10-30% with training

Foods

Carbohydrates, Fat, Protein

ATP

Basic form of energy used by cells

Explosive energy System

Immediate Use of ATP/CP, absence of O₂, lasts for 2 to 10 seconds

Anaerobic Energy System

Non-oxidative, Muscle stores of glucose and glycogen, 10 - 2 minutes

Aerobic Energy System

Oxidative, body stores of carbohydrates, fat, and protein, >2 minutes

Percentage of Energy

At 100 percent effor body tries to use as much carbohyrdates as possible and less fats as possible(increase in carbohydrates, decease in fat)

For prolonged workout body tries to use as much fat as possible and as little carbojydrates as possible

Fick Equation

(HR X SV) X a-vO₂ = VO₂

arterio–venous Oxygen difference (a-vO₂)

The difference in the amount of O₂ arriving in the muscle cells via arteries mnus the amount of O₂ leaving the muscles cells through the veins

Cardiac Output (CO)

HR X SV

Aerobic exerice increases what

increased number and capacity of mitocondria

Target HR zone

ranges between 65 to 90% of Max HR (can be 55% for fat people)

Max Heart Rate – Rest Heart Rate] x 0.55-0.95 + Rest HR = Target HR Zone