ch6: assessment of OA Flashcards
what is overall func of the cardiovascular and respiratory systems and why imp to test
aerobic fitness, cadiovascular endurance
- provides baseline values prior to commencing a fitness program
- is a key determinant of maintaining independent living
how to measure CRF in a lab setting
- direct method
- indirect method
what is a direct method of measuring CRF
measurment taken during maximal intensity exercise tests
advantage vs disadvantage of CRF direct method measure
A
- more accurate
- better estimation of desired exercise intensity
D
- require expensive & sophisticated equipment
- higher risk of adverse events
- physician supervision can be required
advantage and disadvantage of indirect CFR measurement
A
- easier to make measurments
*lower risk for technical issues
*test is shorter to perform
* test is less expensive
D
less accurate: typical error = 5-7% in CFR max prediction
types of submax CRF tests
treadmill
leg ergometer
arm ergometer
recumbent stepper
modified balke-ware treadmill test
modified treadmill test
- uses a slow & constant walking speed with small inc in grade every minute
- most appropriate for oA
- good ambulation
- can be a bit too long for fit OA but can be moidified (inc speed, inc grade increments)
reasons for stopping a test
- angina like symptoms
- participant:
- not sweating
- feels light headed
- feels confused or unsteady
- looks pale
- has blue lips
- bp drops below 20mmHg from rest
- no inc in systolic bp with inc intensity
- excessive rise in systolic bp or diastolic
> 250 systoli
>115 diastolic - HR does not rise w/ inc intensity
- noticable change in heart rhytm
- request to stop
- signs of severe fatigue
- failure of equipment
who is the blake-ware treadmill test recommended for
- healthy and frail OA
- participants w/ cardiac prob
- participants w/ chronic diseases & disability
bc
slow walking speed 0.9m/s
slow inc in treadmill grade
predicted HRmax
(207-0.7 x age)
typical wlaking speed of OA and younger adults
4.5km/h-4.8km/h for OA
5.3-5.4 for YA
calculation of oxygen consumption
VO2= 0.1 x speed + 1.8 x speed x grade + 3.5
1mile/h in m/min
26.8m/min
calculation if the target HR of 116 bpm is reached at a grade of 8 % and a speed of 2 miles/hour:
5.36 + 7.72 + 3.5
calculation if the target HR of 116 bpm is reached at a grade of 16% and a speed of 2 miles/hour:
24.3ml/kg/min
muscular strength testing
1 RM test
- recommended for healthy OA
Submax alternative to 1 RM
- for frail OA or participants w/ phys impariments and disabilities
4 measurements of balance
1- static balance
2- dynamic balance
3- reactive balance
4- sensory integration & organisation
static balance test
- ability to maintain the COM directly over the BOS
- stand still for x amount of time
- eyes open, closed, one leg
- force plates measure: megnitude + velocity of the postural sway
dynamic balance test
- the ability to control the COM while leaning through or moving beyond the LOS(limit of stability)
- measure
*distance reached forward, backward, laterally and diagnoly - time rx
- mvt accuracy
reactive postural control testing
- ability to respond automatically to aloss of balance
- pertubation is elicited through a moving force plate
force plate measure: - time + magnitude of rx to pertubation
what does the sensory integration and organization test measure
1- how well each sensory system is functioning
2- how well the participant maintains upright balance when the information coming from the 3 systems is not in a greement
results can indicate if an OA is at risk of falls in certain sensory conditions
