Module 2 - aerobic power: A testing perspective Flashcards
What are the determinants of VO2?
VO2 = Q x (a-VO2)
Q - (+) SNS
- (-) PSNS
- preload
- after-load
- blood volume
- LV performance
a-VO2 - PaO2, CaO2 (altitude, Hct)
- skeletal muscle metabolism
- blood flow distribution
- respiration
- peripheral circulation
factors that influence VO2max performance
age, sex, body comp, reported fitness level, mode and type of test, medication
other factors:
food prior, smoking prior, caffeine, time of the day/week, previous exercise activites
common metrics observed during a VO2 test
- respiratory gas exchange ratio (RER)
- minute ventilation (VE)
- respiratory rate (RR)
- Tidal Volume (Vt)
- HR
- BP
- Ventilatory equivalents measures (VE/VO2 and VE/VCO2)
- metabolic equivalents (METS)
- symptoms
at rest VCO2
0.2L/min
at rest RER
0.8
at rest RR
10-16bpm
at rest Vt
0.5L
at rest FEO2 (fraction of expired oxygen)
15-18%
at rest FECO2
3%
at rest VO2/kg
2-5 mL/kg/min
at rest VEbtps
5-8L
at rest HR
60-80bpm
near maximal VO2
2-3L
near maximal RER
> 1.1
near maximal RR
33-45bpm
near maximal Vt
> 2L
near maximal VO2/kg
> 40 mL/kg/min
near maximal VEbtps
> 100 (male)
80 (female)
near maximal HR
depends on age
End criteria (5 main parameters)
- RER >1.1
- +- 5 beats/min from predicted maximal HR
- plateau of </= 150mL VO2
- RPE >17
- Equipment failure
How does training and detraining impact capability to exercise?
they have considerable impact - rapidly, our bodies are very adaptable even if you can’t see physical differences straight away (heart, veins, mitochondria etc)
How many methods are there to measure an individual aerobic capacity?
many - lab and field test, direct and indirect methods
What to consider prior to testing?
the environment and the individual health/habits
