chap 6 Flashcards
name 3 synonyms of cardiorespiratory function
Aerobic fitness
Aerobic endurance
Cardiorespiratory endurance
2 goods reason to test CRF
Provides baseline values prior to commencing a fitness program
Is a key determinant of maintaining independent living (Basic ADLs and Instrumental ADLs)
what is a direct method to measure CRF
Measurements taken during maximal-intensity exercise tests
advantage of the direct method vs indirect
- more accurate (typical error =3%)
- better estimation of desired exercise intensity
disadvantage of direct method vs indirect
- Require expensive & sophisticated equipment
- Higher risk of adverse events (↑ stress on participants)
- physician supervision can be required
- more appropriate for younger, healthy people or athlete
what is an indirect method to measure CFR
Measurements taken without the use of:
Sophisticated equipment
Equations are used to estimate VO2 level
advantage of indirect methods vs direct
Easier to make measurement
- Lower risk for technical issues
- Test is shorter to perform
- Test is less expensive
disadvante of indirect methods vs direct
Less accurate: Typical error = 5 to 7% in CRF max prediction
treadmill desavatange to test submaximal CRF
- Expensive
- Not portable (field test)
- More difficult to measure BP accurately vs. leg cycle ergometer
- May not be appropriate for older adults with balance, gait or weight problems
which test is preferred between leg cycle ergometer vs treadmill
leg
advantage and disavantage of leg cycle
Easy to obtain CRF measurements – BP, HR
More portable vs. treadmill (vs. NuStep)
However:
Not necessarily functional exercise
Can develop localized muscle fatigue
For non initiated OA, the limit to the CRF test may be the
use of the equipment vs. their aerobic capacity
VO2 max is – _% lower on leg cycle vs treadmill)
10
recumbent stepper is the preferred testing for OA with
- Impaired motor coordination in upper and/or lower limbs (ex: SCI, stroke, MS, Parkinson’s etc.)
- balance, gait or weight problem
disadvantages of recumbent stepper
Not necessarily functional exercise
Expensive + not portable
Difficult to take BP during test
Quite recent = limited exercise protocols for testing
can you design your own testing protocol for OA ?
yes, especially for sub-max effort
what to use for older adult with difficulty in ambulation or is in bed restriction
arm cycle ergometer
advantage and disadvantage or arm cycle ergometer
- portable, inexpensive
désavantage - Localized muscle fatigue in smaller arm muscles
- Lack of functional specificity
- Difficult to take BP during test
how many protocol is there for recumbent stepper
1 vs other there’s several
For OA submax test are/are not recommended
are
what is a submax test and what does participants must reach
- Indirect measurement of the volume of oxygen consumed per min
- Participants must reach ± 75% of max age-predicted HR
Accuracy for predicting VO2 max
Based on assumption that HR ↑ at same rate
However, error of 5 to 7%
Better to compare workload (or VO2) achieved at a given
Given HR from test to test (vs. extrapolating to max)
modified bake-ware treadmill test is recommended for OA why and is most appropriate for OA with
Uses a slow and constant walking speed with small increases in grade every minute
good ambulation
