Aerobic Testing 2.0 Flashcards Preview

EPHE 444 > Aerobic Testing 2.0 > Flashcards

Flashcards in Aerobic Testing 2.0 Deck (50):
1

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

lab-based
or
Field tests

2

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

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

3

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

HR measurement

4

What happens to HR with an increase in VO2

As oxygen consumption increases so does HR

5

What are 4 assumptions of indirect tests

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

6

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

Can vary up to +/-20 bpm

7

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

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

8

What are 8 types of indirect measurement of VO2max

- 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

9

What are some features of a cycle ergometer direct measurement test

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

10

What are some features of a treadmill direct measurement test

- 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

11

oxygen consumption increase linearly with ___

workload

12

How does workload change on a treadmill

By manipulating speed and/or elevation

13

The ACSM Walking equation is most accurate for speeds of...

1.9-3.7 mph

14

What is the ACSM Walking equation

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

15

The ACSM Running equation is most accurate for speeds...

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

16

On a cycle ergometer, workload changes by..

manipulating the resistance or the pedaling rate

17

What is the equation for power

Power = work/time

18

On a cycle ergometer what is the equation for work

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

19

What is the speed of the fly wheel

6m/rev

20

Where must direct test measurement take place? using what?

Laboratory-based using open-circuit spirometry

21

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

Inspiration of room air and expiration through the system

22

What does the gas collection system do

Collection and gas volume measurement

23

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

The mixing chamber

24

The gas collection system has ___ and ___ analyzers

CO2 and O2

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