Aerobic Assessments Flashcards
Vo2 max
Maximal ability of heart, lungs, & blood to deliver 02 to working muscles during dynamic exercise
VO 2 peak
- highest o 2 consumption during exercise test
- may be higher than, lower than, or equal to vo 2 max
VO 2 during graded test
VO 2 increases as test get progressively harder (grade and intensity go up )
Physiological factors influencing VO 2 max
- Max ability of cardiorespiratory system to deliver o 2 to the muscle
- ability of muscle to use o 2 to provide ATP aerobically
Absolute VO 2
- L/ min or ml/min
- no reference to body mass
- energy cost of non-weight-bearing exercises
Relative VO 2
- Ml/kg/min
- relative to body mass
- Energy cost of weight-bearing exercises
- allows comparison of CRF across body sizes
Gross VO 2
Rest + exercise O2 consumption
Net VO 2
O2 consumption of exercise only
Trained vs. Untrained
- Trained subjects hue a lower oxygen deficit
- better developed aerobic bioenergetic capacity
- due to cardiovascular or muscular adaptations
-Results in less production of lactate and h+
What determines vo 2 during steady State
Exercise intensity
Primary vo2 max attainment criterion
Plateau in O2 consumption
Vo2 2 increase > on equal to 150 m//min
Secondary Vo2 max attainment criteria
-HR fails to raise w/ increased workload
- RPE >17
- RER >1.10
-HR during last stage is w/in 10 bpm of hr-max
Procedures for testing
-Informed consent & screening
-timely delivery of pretest guidelines
- baseline hemodynamics assessment
- familiarization w RPE scale
-warm up
- monitor RPE + hemodynamics throughout test + recovery
- monitor client physical appearance + symptoms
- cool-down
Reasons to terminate test
- end of protocol
-Equipment malfunction
-client asks to stop - signs or symptoms indicating need to stop
- reached predetermined end point
Common treadmill tests
- Standard Bruce
- modified Bruce
- Blake
- naughton
Common bike tests
- Astrand
-Fox
Macardle
submax protocols
More cost + time effective alternative
May be shorter version of max test
Monitor HR, bp, RPE
4 assumptions of submax tests
- Steady State HR attained 6 maintained at each stage
- Linear relationship: HR& VO2
- Mechanical efficiency constant for everyone
- HR max is similar for all of same age
