Cardiorespiratory responses to exercise Flashcards
What are the three respiratory volume parameters?
Tidal Volume (TV)
Inspiratory Reserve Volume (IRV)
Expiratory Reserve Volume (ERV)
What is tidal volume?
The amount of air that is inhaled or exhaled during a normal breath when at rest. It represents the average volume of air moved into or out of the lungs with each breath
typically about 500 millilitres in a healthy adult.
What is inspiratory reserve volume?
the maximum amount of additional air that can be inhaled after a normal inhalation (TV)
In a healthy adult, IRV is typically around 2,000 to 3,000 millilitres.
What is expiratory reserve volume?
the maximum amount of additional air that can be exhaled forcefully after a normal exhalation
In a healthy adult, ERV is usually around 1,000 to 1,200 millilitres.
What is the calculation for ventilation during exercise (Ve)?
Ve= Respiratory rate x Tidal Volume
What is the typical resting minute ventilation of an adult?
5-6 litres/ minute
This means that, at rest, a person breathes in and out a total of 5 to 6 liters of air per minute.
What is the typical maximal minute ventilation of an adult?
> 100 litres/minute
This is the highest volume of air a person can inhale and exhale in one minute under maximum effort.
What does maximal minute ventilation represent?
the peak ventilation capacity
which, increases significantly during exercise to meet the body’s higher oxygen demands. However, even at high exercise intensities, this maximum is typically not fully reached.
