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*EXERCISE PRESCRIPTION LAB > LAB4- Submaximal Oxygen Uptake (VO2) Testing > Flashcards

LAB4- Submaximal Oxygen Uptake (VO2) Testing Flashcards

1
Q

submaximal oxygen uptake (VO2) testing

A

estimation of VO2 max
-using YMCA cycle ergometer test

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2
Q

submaximal VO2 testing is a method for what

A

estimating cardiovascular endurance without having the client use maximal effort

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3
Q

a submaximal test never has a client go over ____% of age-predicted HR max

A

85%

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4
Q

what do many submaximal tests use to estimate VO2 max

A

HR
-because of the strong linear relationship between HR + VO2

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5
Q

collected HR data is used to estimate VO2 max via what 2 methods

A

-graphing method
-equation method

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6
Q

what do graphing method + equation method have in common

A

boly rely on relationship between HR + VO2

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7
Q

is submaximal VO2 testing or VO2 max testing more accurate

A

VO2 max testing is more accurate
-but often times submax tests are more practical than max tests because they are safer + quicker to administer

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8
Q

examples of submaximal tests (7)

A

-Astrand-Rhyming cycle ergometer test
-Queens College (McArdle) step test
-YMCA step test
-Harvard (Brouha) step test
-Rockport walking test
-6 minute walk test
-YMCA cycle ergometer test

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9
Q

examples of submaximal tests

Astrand-Rhyming cycle ergometer test

A

single stage cycle test
6 minutes

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10
Q

examples of submaximal tests

Queens College (McArdle) step test

A

single stage step test
3 minutes

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11
Q

examples of submaximal tests

YMCA step test

A

single stage step test
3 minutes

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12
Q

examples of submaximal tests

Harvard (Brouha) step test

A

single stage step test
5 minutes

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13
Q

examples of submaximal tests

Rockport walking test

A

self-paced walking field test
duration of a mile

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14
Q

examples of submaximal tests

6 minute walk test

A

self-paced walking field test
6 minutes

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15
Q

examples of submaximal tests

YMCA cycle ergometer test

A

grade exercise test
6-12 minutes

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16
Q

are all submaximal tests created to estimate VO2

A

no

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17
Q

3 tests that weren’t created to estimate VO2

A

-Harvard (Brouha) step test
-YMCA step test
-6 minute walk test

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18
Q

4 assumptions for submaximal tests

A
  1. steady stage HR is achieved during each interval (stage of GXT or single stage)
  2. linear relationship between HR + VO2
  3. equal mechanical efficiency for everyone
  4. accurate age-predicted HR max equation
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19
Q

age-predicted HR max equation

A

VO2 max = 220 - age

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20
Q

____ is a good predictor of VO2 max

A

HR

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21
Q

____% possibility of error depending on which prediction equations are used

A

5-15%

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22
Q

____ coincides well with VO2 max

A

HR max

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23
Q

Fick equation

A

VO2 = cardiac output x a-VO2 difference

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24
Q

why is HR used to estimate VO2?

A

reference Fick equation: VO2 = Q x a-VO2 diff
-because SV and a-VO2 difference max out before 60% of maximal effort
-the only component increase VO2 after that point is HR

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25
Q

submax HR varies with ____

A

fitness

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26
Q

the slope of what indicates fitness level

A

slope of the HR/workrate relationship

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27
Q

why was YMCA cycle ergometer test first introduced

A

to predict maximal work capacity
-first introduced in the “Y’s Way to Physical Fitness” in 1989
-over the past 30 years the YMCA cycle ergometer test has become one of the most popular submaximal tests available

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28
Q

why was YMCA cycle ergometer test quickly used to estimate VO2 max

A

because of the strong relationship between work rate, HR, + oxygen comsumption

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29
Q

YMCA cycle ergometer test

A

a GXT consisting of 2-4 three-minute stages

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30
Q

how long are the stages of YMCA cycle ergometer test

A

3 minutes

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31
Q

how many stages of YMCA cycle ergometer test

A

2-4

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32
Q

what protocol did we use in lab for YMCA cycle ergometer test

A

standard protocol
-various modified protocols exist

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33
Q

what 2 values are used to determine test termination point of YMCA cycle ergometer test

A

-age predicted maximal HR (220-age)
-85% HR max

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34
Q

YMCA cycle test protocol

A
  1. calculate APMHR (220-age)
  2. explain test + purpose of test to client
  3. properly adjust the height of the seat for client. when the pedal is at its lowest point of rotation, the knee of the client should be at 25 degrees or less from full extension (depending on what the client finds most comfortable)
  4. client should start pedaling at 50 rpm + keep that pace through entire test (have client start pedaling before resistance is adjusted)
  5. if there is no RPM moniter on the cycle ergometer, set a metronome to 100 for the proper pace
  6. warm-up: 2-3 min at same intensity as 1st stage (150 kgm/min)
  7. stage 1 begins at same workload: 150 kgm/min (0.5 kp)
  8. HR at end of 1st stage determines the resistance for the following stages
  9. in subsequent stages, assess HR at end of 2nd + 3rd minute
  10. HRs must be within 5 bpm to be considered “steady state”; if not steady state, continue at same workload for another minute
  11. the client continues until they reach 2 stages about 110bpm (if a client reaches 85% of their APMHR before 2 stages the test as unsuccessful + they need to stop)
  12. following the completion of 2 stages above 110bpm take the data + graphically or mathematically estimate their VO2 max
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35
Q

YMCA cycle test protocol

when the pedal is at its lowest point of rotation…

A

the knee of the client should be 25 degrees or less from full extension
-depending on what the client finds most comfortable

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36
Q

YMCA cycle test protocol

what speed should client start pedaling at

A

50 rpm
-keep that pace throughout the entire test
-have client start pedaling before resistance is adjusted

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37
Q

YMCA cycle test protocol

if there is no RPM monitor on the cycle ergometer…

A

set a metronome to 100 for the proper pace

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38
Q

YMCA cycle test protocol

warm-up

A

2-3 min at same intensity as first stage (150 kgm/min)

39
Q

YMCA cycle test protocol

stage 1

A

150 kgm/min (0.5 kp)

40
Q

YMCA cycle test protocol

what determines the resistance for the stages after 1

A

HR at end of 1st stage

41
Q

YMCA cycle test protocol

what value must HR be within to be considered steady state

A

5 bpm

42
Q

YMCA cycle test protocol

if not steady state…

A

continue at same workload for another minute

43
Q

YMCA cycle test protocol

what 3 measurements should be made during each stage

A

-BP at end of 2nd minute
-RPE at end of 2nd minute
-HR at end of 2nd + 3rd minute

44
Q

YMCA cycle test protocol

the client continues until…

A

until they reach 2 stages above 110 bpm

45
Q

YMCA cycle test protocol

if a client reaches 85% of their APMHR before 2 stages of the test…

A

test was unsuccessful + they need to stop

46
Q

YMCA cycle test protocol

what value stays the same the entire test

A

50 rpm

47
Q

distance per revolution

A

6 meters

48
Q

**for quiz, be able to figure out resistance (kp) when given kgm
-know that rpm + meters stays constant

A
49
Q

what value represents resistance

A

kp

50
Q

kgm equation

A

kgm = kp x 50rpm x 6meters

51
Q

what value is most important in the protocol

A

HR

52
Q

SUBMAX STAGES

how many stages possible

A

warmup + 4

53
Q

SUBMAX STAGES

how long is each stage

A

3 minutes

54
Q

SUBMAX STAGES

warmup

A

3 min
0.5 kp

55
Q

SUBMAX STAGES

1st stage

A

150 kgm/min
(25 watts)
0.5 kp

56
Q

SUBMAX STAGES

2nd stage
HR < 80

A

750 kgm/min
(125 watts)
2.5 kp

57
Q

SUBMAX STAGES

2nd stage
HR 80-89

A

600 kgm/min
(100 watts)
2 kp

58
Q

SUBMAX STAGES

2nd stage
HR 90-100

A

450 kgm/min
(75 watts)
1.5 kp

59
Q

SUBMAX STAGES

2nd stage
HR > 100

A

300 kgm/min
(50 watts)
1 kp

60
Q

SUBMAX STAGES

3rd stage
HR < 80

A

900 kgm/min
(150 watts)
3 kp

61
Q

SUBMAX STAGES

3rd stage
HR 80-89

A

750 kgm/min
(125 watts)
2.5 kp

62
Q

SUBMAX STAGES

3rd stage
HR 90-100

A

600 kgm/min
(100 watts)
2 kp

63
Q

SUBMAX STAGES

3rd stage
HR > 100

A

450 kgm/min
(75 watts)
1.5 kp

64
Q

SUBMAX STAGES

4th stage
HR < 80

A

1050 kgm/min
(175 watts)
3.5 kp

65
Q

SUBMAX STAGES

4th stage
HR 80-89

A

900 kgm/min
(150 watts)
3 kp

66
Q

SUBMAX STAGES

4th stage
HR 90-100

A

750 kgm/min
(125 watts)
2.5 kp

67
Q

SUBMAX STAGES

4th stage
HR > 100

A

600 kgm/min
(100 watts)
2 kp

68
Q

once you split into protocol via HR…

A

you stay in that category for stages 2-4

69
Q

how is resistance measured in the YMCA cycle ergometer test

A

kiloponds (kp)
-also known as kilogram-force

70
Q

kilogram-force

A

the force exerted by 1 kg of mass in gravity
-non-standard gravitational metric unit of force
-same as kiloponds (kp)

71
Q

how to convert from kp or kg-force to Newtons

A

multiply by 9.806

72
Q

rpm stands for

A

rotations per minute

73
Q

how can work rate be calculate for each stage

A

kp x rpm x distance covered with each rotation

(kp x 50rpm x 6m) -> (kp x 300m/min)

74
Q

we generate a graph to extrapolate VO2 max from what

A

from the 2 stages above 110bpm

75
Q

graphing to estimate VO2 max from submaximal VO2 test data

A
  1. determine the subject’s HR max (220-age)
  2. draw your axes; x-axis is workrate or VO2; y-axis is HR
  3. draw a horizontal line at HR max
  4. calculate SM1 + SM2 (using ACSM equations)
  5. draw a line connecting the 2 data points + extrapolate out to HR max line
  6. draw a straight line down from that point to obtain VO2 at HR max (aka VO2 max)
76
Q

SM1 + SM2 stand for

A

submax 1 + submax 2

77
Q

x-axis on graph

A

workrate or VO2

78
Q

y-axis on graph

A

HR

79
Q

units for workrate

A

kgm/min

80
Q

units for VO2

A

ml/kg/min

81
Q

units for HR

A

bpm

82
Q

leg ergometry VO2 equation

A

= [7 ml/kg/min] + [(power (kgm/min) / body mass (kg)) * 1.8 ml/kg/min]

83
Q

power =

A

power = [force (kg)] * [distance (m/rev) * speed (rev/min)]

84
Q

another equation for power

A

power = force x speed

85
Q

force

A

resistance on the flywheel (kg or kp)

86
Q

speed

A

[distance traveled by the flywheel per revolution (6m/rev)] x [number of revolutions per minute (pedal rate)]

87
Q

**make sure to convert body mass from lbs to kg

A
88
Q

1 kg = ____ lbs

A

2.2

89
Q

what values do we plot

and how do we get VO2 max from them

A

-SM1 VO2 + HR
-SM2 VO2 + HR

-extrapolate a straight line through the 2 data points up to the line indicating HR max
-draw a straight line down from the intersection of the 2 lines to determine what VO2 would have been at HR max (to estimate VO2 max)

90
Q

how to use slope equation to estimate VO2 max from the final 2 stages of the submaximal VO2 test

A

slope = (SM2VO2 - SM1VO2) / (HR2 - HR1)

VO2 max = SM2VO2 + slope(HRmax - HR2)

91
Q

what percentile do we use in normative data to determine good/bad

A

60%

92
Q

normative data

good VO2max for men

A

20-29 years: 50.2
30-39 years: 45.2
40-49 years: 40.3
50-59 years: 35.1
60-69 years: 30.5

93
Q

normative data

good VO2max for women

A

20-29 years: 40.6
30-39 years: 32.2
40-49 years: 28.7
50-59 years: 25.2
60-69 years: 21.2

*EXERCISE PRESCRIPTION LAB (10 decks)

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