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Nutr-484-Exercise phys > Lab Test 1 (lab 4) > Flashcards

Lab Test 1 (lab 4) Flashcards

1
Q

A prediction of maximal oxygen consumption based on cycle ergometry

A

astrand-rhyming test

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2
Q

Most commonly used index to assess CR fitness or the ability to do sustained work

A

VO2max

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3
Q

On a VO2 max vs workload graph the increasing slope indicates this

A

VO2 submax

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4
Q

Methods of determining VO2 max

A

Maximal

Submaximal

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5
Q

How do we know the VO2max has been reached during maximal testing (4)

A

RER >= 1.1
HR max is achieved
Plateau VO2 with increased workload
RPE > 17 (6-20 scale) or > 9 (0-10 scale)

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6
Q

Calculation for age predicted heart rate max

A

220-age

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7
Q

Disadvantages of maximal testing to determine VO2max (5)

A 
Subjects need to be motivated
higher risk than submaximal testing
time consuming
expensive
trained exercise testers are required
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8
Q

Two types of maximal VO2max testing (2)

A

12 minute run

1.5 mile run

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9
Q

How to conduct a 12 minute run test

A

run as far as possible in 12 minues and then measure distance covered

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10
Q

r = this in a 1.5 mile run

A

0.90

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11
Q

VO2 vs distance graph

A

postive slope

slope is steeper for individuals with higher VO2max

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12
Q

VO2 vs 1.5 mile run time

A

negative slope

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13
Q

Disadvantages of 12 minute run and 1.5 mile run (5)

A 
pacing is a factor
motivated subjects required
safety (streets vs track, unmonitored blood pressure and heart rate)
environmental factors
specificity (type of event ex. cyclist)
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14
Q

Two types of submaximal VO2max testing

A 
Step test (harvard step test)
cycle ergometer
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15
Q

What is the step test based on (3)

A

age, gender, recovery HR

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16
Q

Advantages of the step test (4)

A

safe
less motivation is required
pacing is not a factor
mass testing is possible

17
Q

Disadvantages of the step test (4)

A

low validity and less accurate
low correlation with VO2max
also reflective of muscular endurance
local muscular fatigue

18
Q

Cycle ergometer advantages (6)

A 
allows for a calculation of work rate
high validity (r=0.85)
high reliability (r=0.90)
decreased risk
pace is controlled
only a 6 minute test
19
Q

Formula for cycle ergometry workrate

A

(load) x (6m) x (RPM) = kgm/min

RPM = 50

20
Q

Astrand-Rhyming test is a submaximal cycle test based on the relationship of these 3 variables

A

VO2
HR
workload

21
Q

assumed mechanical efficiency of submaximal astrand-rhyming test

A

10.1 mL O2 / min / W

22
Q

describe the graph of HR vs workload

A

positive linear slope

23
Q

describe the graph of HR vs VO2

A

Positive linear slope

24
Q

describe the graph of HRmax vs age

A

Negative linear slope

25
Q

2 ways to control the workrate on the ergometer

A

resistance

RPM

26
Q

T/F (assumptions of VO2 prediction): the heart pumps more efficiently and O2 is more readily utilized for metabolism in more fit individuals

A

T

27
Q

T/F (assumptions of VO2 prediction): increased cardiovascular efficiency is an assumption of VO2 predicitons

A

T

28
Q

T/F (assumptions of VO2 prediction): heart rate is higher to met the metabolic demands of tasks in fit individuals

A

F, lower

29
Q

T/F (assumptions of VO2 prediction): if 2 individuals work at 150 b/min the less fit individual will be working at a higher work rate

A

F, More fit

30
Q

T/F (assumptions for submaximal test): a steady heart rate is for each exercise work rate

A

T

31
Q

T/F (assumptions for submaximal test): A inverse U relationship between HR and workrate

A

F, linear

32
Q

T/F (assumptions for submaximal test): Maximal heart rate for any given age is variable

A

F, uniform

33
Q

T/F (assumptions for submaximal test): Mechanical effeciency (VO2 at a given workrate) is the same for everyone

A

T

34
Q

T/F (assumptions for submaximal test): Medications that affect heart rate are not a concern

A

F

35
Q

Steps to calculate VO2max (4)

A

1 Determine preliminary VO2 max
2 Multiply by age correction factor
3 multiply by 1000
4 Divide the age corrected VO2 max by the body weight in kg

Nutr-484-Exercise phys (14 decks)

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