Oxygen uptake at rest, during exercise and recovery

Question 1

Steady state

Answer 1

When oxygen supply is able to meet oxygen needs

Question 2

Resting levels of oxygen consumption

Answer 2

Whilst resting the demand for oxygen is low with heart rate, respiratory rate and muscle activity also being low. The body systems can easily supply sufficient oxygen to meet low energy demands at rest and the body is considered to be at steady state

Question 3

Oxygen deficit

Answer 3

A period, typically at the start of exercise when oxygen demands exceed the body’s ability to supply/meet these demands

Question 4

Exercise intensity and oxygen demand

Answer 4

During exercise and sport, as soon as oxygen demands can be met the person is considered to be in a steady state and most of the energy being produced aerobically. The greater the oxygen workload, the larger the oxygen deficit and the longer it will take for the body to meet oxygen demands with oxygen supply and the later steady state will occur

Question 5

EPOC

Answer 5

Excess
Post exercise
Oxygen
Consumption

Question 6

Processes occurring during EPOC

Answer 6

At the completion of exercise, sport or training, oxygen consumption remains elevated, this elevated oxygen intake is EPOC. The higher the workload during the activity or exercise, the larger the EPOC

Question 7

Fast stage of EPOC

Answer 7

Restores ATP at muscles
Restores oxygen to myoglobin
Resynthesises creatine phosphate (3 minutes are required to regenerate CP after significant depletion during exercise)

Question 8

Slow stage of EPOC

Answer 8

Core temperature returns to pre exercise levels
Heart rate and respiratory rate return to pre exercise levels
Other body systems return to pre exercise levels (muscular)
Lactic converts to glucose, glycogen and protein
Fatty acid cycling increases

Question 9

Oxygen deficit

Question 10

Steady state

Question 11

Oxygen debt (EPOC)