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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
submax HR varies with ____
fitness
26
the slope of what indicates fitness level
slope of the HR/workrate relationship
27
why was YMCA cycle ergometer test first introduced
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
28
why was YMCA cycle ergometer test quickly used to estimate VO2 max
because of the strong relationship between work rate, HR, + oxygen comsumption
29
YMCA cycle ergometer test
a GXT consisting of 2-4 three-minute stages
30
how long are the stages of YMCA cycle ergometer test
3 minutes
31
how many stages of YMCA cycle ergometer test
2-4
32
what protocol did we use in lab for YMCA cycle ergometer test
standard protocol -various modified protocols exist
33
what 2 values are used to determine test termination point of YMCA cycle ergometer test
-age predicted maximal HR (220-age) -85% HR max
34
YMCA cycle test protocol
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 12. 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) 13. following the completion of 2 stages above 110bpm take the data + graphically or mathematically estimate their VO2 max
35
# YMCA cycle test protocol when the pedal is at its lowest point of rotation...
the knee of the client should be 25 degrees or less from full extension -depending on what the client finds most comfortable
36
# YMCA cycle test protocol what speed should client start pedaling at
50 rpm -keep that pace throughout the entire test -have client start pedaling before resistance is adjusted
37
# YMCA cycle test protocol if there is no RPM monitor on the cycle ergometer...
set a metronome to 100 for the proper pace
38
# YMCA cycle test protocol warm-up
2-3 min at same intensity as first stage (150 kgm/min)
39
# YMCA cycle test protocol stage 1
150 kgm/min (0.5 kp)
40
# YMCA cycle test protocol what determines the resistance for the stages after 1
HR at end of 1st stage
41
# YMCA cycle test protocol what value must HR be within to be considered steady state
5 bpm
42
# YMCA cycle test protocol if not steady state...
continue at same workload for another minute
43
# YMCA cycle test protocol what 3 measurements should be made during each stage
-BP at end of 2nd minute -RPE at end of 2nd minute -HR at end of 2nd + 3rd minute
44
# YMCA cycle test protocol the client continues until...
until they reach 2 stages above 110 bpm
45
# YMCA cycle test protocol if a client reaches 85% of their APMHR before 2 stages of the test...
test was unsuccessful + they need to stop
46
# YMCA cycle test protocol what value stays the same the entire test
50 rpm
47
distance per revolution
6 meters
48
**for quiz, be able to figure out resistance (kp) when given kgm -know that rpm + meters stays constant
49
what value represents resistance
kp
50
kgm equation
kgm = kp x 50rpm x 6meters
51
what value is most important in the protocol
HR
52
# SUBMAX STAGES how many stages possible
warmup + 4
53
# SUBMAX STAGES how long is each stage
3 minutes
54
# SUBMAX STAGES warmup
3 min 0.5 kp
55
# SUBMAX STAGES 1st stage
150 kgm/min (25 watts) 0.5 kp
56
# SUBMAX STAGES 2nd stage HR < 80
750 kgm/min (125 watts) 2.5 kp
57
# SUBMAX STAGES 2nd stage HR 80-89
600 kgm/min (100 watts) 2 kp
58
# SUBMAX STAGES 2nd stage HR 90-100
450 kgm/min (75 watts) 1.5 kp
59
# SUBMAX STAGES 2nd stage HR > 100
300 kgm/min (50 watts) 1 kp
60
# SUBMAX STAGES 3rd stage HR < 80
900 kgm/min (150 watts) 3 kp
61
# SUBMAX STAGES 3rd stage HR 80-89
750 kgm/min (125 watts) 2.5 kp
62
# SUBMAX STAGES 3rd stage HR 90-100
600 kgm/min (100 watts) 2 kp
63
# SUBMAX STAGES 3rd stage HR > 100
450 kgm/min (75 watts) 1.5 kp
64
# SUBMAX STAGES 4th stage HR < 80
1050 kgm/min (175 watts) 3.5 kp
65
# SUBMAX STAGES 4th stage HR 80-89
900 kgm/min (150 watts) 3 kp
66
# SUBMAX STAGES 4th stage HR 90-100
750 kgm/min (125 watts) 2.5 kp
67
# SUBMAX STAGES 4th stage HR > 100
600 kgm/min (100 watts) 2 kp
68
once you split into protocol via HR...
you stay in that category for stages 2-4
69
how is resistance measured in the YMCA cycle ergometer test
kiloponds (kp) -also known as kilogram-force
70
kilogram-force
the force exerted by 1 kg of mass in gravity -non-standard gravitational metric unit of force -same as kiloponds (kp)
71
how to convert from kp or kg-force to Newtons
multiply by 9.806
72
rpm stands for
rotations per minute
73
how can work rate be calculate for each stage
kp x rpm x distance covered with each rotation (kp x 50rpm x 6m) -> (kp x 300m/min)
74
we generate a graph to extrapolate VO2 max from what
from the 2 stages above 110bpm
75
graphing to estimate VO2 max from submaximal VO2 test data
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
SM1 + SM2 stand for
submax 1 + submax 2
77
x-axis on graph
workrate or VO2
78
y-axis on graph
HR
79
units for workrate
kgm/min
80
units for VO2
ml/kg/min
81
units for HR
bpm
82
leg ergometry VO2 equation
= [7 ml/kg/min] + [(power (kgm/min) / body mass (kg)) * 1.8 ml/kg/min]
83
power =
power = [force (kg)] * [distance (m/rev) * speed (rev/min)]
84
another equation for power
power = force x speed
85
force
resistance on the flywheel (kg or kp)
86
speed
[distance traveled by the flywheel per revolution (6m/rev)] x [number of revolutions per minute (pedal rate)]
87
**make sure to convert body mass from lbs to kg
88
1 kg = ____ lbs
2.2
89
what values do we plot and how do we get VO2 max from them
-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
how to use slope equation to estimate VO2 max from the final 2 stages of the submaximal VO2 test
slope = (SM2VO2 - SM1VO2) / (HR2 - HR1) VO2 max = SM2VO2 + slope(HRmax - HR2)
91
what percentile do we use in normative data to determine good/bad
60%
92
# normative data good VO2max for men
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
# normative data good VO2max for women
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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