Aerobic Testing 2.0 Flashcards

(50 cards)

1
Q

Submaximal, indirect aerobic fitness tests can occur in what two settings

A

lab-based
or
Field tests

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2
Q

how do submaximal, indirect aerobic fitness tests compare to direct measure tests

A

Less accurate but often more practical compared to direct measure tests - costs, time, equipment

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3
Q

Submaximal, indirect aerobic fitness tests allow extrapolation of VO2 from …..

A

HR measurement

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4
Q

What happens to HR with an increase in VO2

A

As oxygen consumption increases so does HR

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5
Q

What are 4 assumptions of indirect tests

A
  1. Steady-state HR is obtained for each work rate
  2. The max HR for a given age is uniform
  3. A linear relationship exists between HR, VO2, and PO
  4. Mechanical efficiency (VO2 at a given work rate) is the same for everyone
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6
Q

Although it is an assumption that max HR for a given age is uniform, in reality HR…

A

Can vary up to +/-20 bpm

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7
Q

Although it is an assumption that mechanical efficiency is the same for everyone, in reality…

A

A runner with poor running economy would exhibit higher VO2/HR at any given running speed than an economical runner

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8
Q

What are 8 types of indirect measurement of VO2max

A
  • step test (mCAFT)
  • Queen’s College step test
  • YMCA cycle test
  • Astrand cycle test
  • Ebbeling treadmill test
  • 1.5 mile run (Cooper’s)
  • 20MSR
  • Bruce treadmill test
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9
Q

What are some features of a cycle ergometer direct measurement test

A
  • Often yields lower maximal values (local muscular fatigue)
  • Some people may feel safe than on a treadmill (balance/fatigue)
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10
Q

What are some features of a treadmill direct measurement test

A
  • Often yields higher maximal values
  • more familiar mode for most people
  • Many population-specific protocols and norms available
  • Running protocols may be unsuitable for some medical conditions
  • VO2max can be estimated indirectly from total time in maximal test protocols
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11
Q

oxygen consumption increase linearly with ___

A

workload

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12
Q

How does workload change on a treadmill

A

By manipulating speed and/or elevation

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13
Q

The ACSM Walking equation is most accurate for speeds of…

A

1.9-3.7 mph

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14
Q

What is the ACSM Walking equation

A

VO2 = 0.1(speed) + 1.8(speed)(fractional grade) + 3.5

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15
Q

The ACSM Running equation is most accurate for speeds…

A

Over 5mph or as low as 3mph if participant is running

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16
Q

On a cycle ergometer, workload changes by..

A

manipulating the resistance or the pedaling rate

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17
Q

What is the equation for power

A

Power = work/time

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18
Q

On a cycle ergometer what is the equation for work

A

f x d
F = Kilogram or kiloponds resistance
D = Revolutions of flywheel and distance it moves/rev

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19
Q

What is the speed of the fly wheel

A

6m/rev

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20
Q

Where must direct test measurement take place? using what?

A

Laboratory-based using open-circuit spirometry

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21
Q

In the gas collecting system you want appropriate breathing valves, tubing and stopcocks to allow for….

A

Inspiration of room air and expiration through the system

22
Q

What does the gas collection system do

A

Collection and gas volume measurement

23
Q

Gas to be analyzed by the gas collection system should be drawn directly from…

A

The mixing chamber

24
Q

The gas collection system has ___ and ___ analyzers

25
What is VO2
Volume of oxygen consumed
26
What is VCO2
Volume of expired CO2
27
What is RER
Respiratory exchange ratio = VCO2/VO2
28
What is Ve
Ventilation: Volume of expired gas
29
What is HR
heart rate (bpm)
30
What is Vt
Tidal volume (L)
31
What is FeO2
Fraction of O2 in expired gas (%)
32
What is FeCO2
fraction of CO2 in expired gas
33
What is TM Elv
Treadmill elevation
34
What is TM Spd
Treadmill speed (mph)
35
What is the gold standard of direct tests
Graded exercise test (GXT)
36
How long should a GXT last
Between 8 and 12 minutes
37
What is the goal of having a duration between 8-12 minutes for a GXT
Balance between preventing exhaustion anaerobically before reaching VO2max and exhausting working muscles due to length of test
38
What is the sequence of a GXT
Begin at submaximal workload and provide gradual, systematic increases to the point of volitional fatigue
39
What is the End Criteria for a GXT Vo2 max test (Peak Criteria)
- HR fails to increase with increasing workload or is at or close to age-predicted max (+/- 20 bpm) - Blood lactate concentration > 8mmol/L - RER>1.15 - Volitional fatigue (RPE>17 on Borg 6-20 scale
40
What is the End Criteria for a GXT Vo2 max test Max Criteria)
All of the peak criteria plus a plateau is attained
41
What is considered a plateau for VO2max
<2mL/kg/min change with increasing workload
42
What are 7 immediate test termination observations
- Dizziness - Volitional fatigue - Mental confusion - Cyanosis or pallor - BP does not increase during exercise or distinctly drops during exercise - Systolic pressure at or above 250 mm HG - Diastolic pressure at or above 120 mm HG
43
What is the overall risk of exercise testing (maximal) in a mixed subject population (supervised by physicians or non-physicians)
~ 6 events in 10,000 tests
44
Vigorous exercise increases the risk of sudden cardia death only in individuals with...
pre-existing heart disease whether diagnosed or not
45
what is aerobic threshold
The level of O2 consumption at which there is a rapid and systematic increase in blood lactate concentration or a non-linear increase in ventilation
46
How can we predict aerobic threshold
With ventilation or blood lactate concentration. Or in lab can predict with RER ~1.0
47
VO2max measures...
The rate of O2 uptake during maximal exercise
48
Rate = _____ (power or capacity)
power
49
VO2max is often defined as...
Functional capacity of the cardiorespiratory system
50
What is the most valid measure of the functional ability of the cardiorespiratory system
VO2max test