Lab Test 1 (lab 4)

Question 1

A prediction of maximal oxygen consumption based on cycle ergometry

Answer 1

astrand-rhyming test

Question 2

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

Answer 2

VO2max

Question 3

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

Answer 3

VO2 submax

Question 4

Methods of determining VO2 max

Answer 4

Maximal

Submaximal

Question 5

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

Answer 5

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

Question 6

Calculation for age predicted heart rate max

Answer 6

220-age

Question 7

Disadvantages of maximal testing to determine VO2max (5)

Answer 7

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

Question 8

Two types of maximal VO2max testing (2)

Answer 8

12 minute run

1.5 mile run

Question 9

How to conduct a 12 minute run test

Answer 9

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

Question 10

r = this in a 1.5 mile run

Answer 10

0.90

Question 11

VO2 vs distance graph

Answer 11

postive slope

slope is steeper for individuals with higher VO2max

Question 12

VO2 vs 1.5 mile run time

Answer 12

negative slope

Question 13

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

Answer 13

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)

Question 14

Two types of submaximal VO2max testing

Answer 14

Step test (harvard step test)
cycle ergometer

Question 15

What is the step test based on (3)

Answer 15

age, gender, recovery HR

Question 16

Advantages of the step test (4)

Answer 16

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

Question 17

Disadvantages of the step test (4)

Answer 17

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

Question 18

Cycle ergometer advantages (6)

Answer 18

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

Question 19

Formula for cycle ergometry workrate

Answer 19

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

RPM = 50

Question 20

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

Answer 20

VO2
HR
workload

Question 21

assumed mechanical efficiency of submaximal astrand-rhyming test

Answer 21

10.1 mL O2 / min / W

Question 22

describe the graph of HR vs workload

Answer 22

positive linear slope

Question 23

describe the graph of HR vs VO2

Answer 23

Positive linear slope

Question 24

describe the graph of HRmax vs age

Answer 24

Negative linear slope

Question 25

2 ways to control the workrate on the ergometer

Answer 25

resistance | RPM

Question 26

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

Answer 26

T

Question 27

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

Answer 27

T

Question 28

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

Answer 28

F, lower

Question 29

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

Answer 29

F, More fit

Question 30

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

Answer 30

T

Question 31

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

Answer 31

F, linear

Question 32

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

Answer 32

F, uniform

Question 33

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

Answer 33

T

Question 34

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

Answer 34

F

Question 35

Steps to calculate VO2max (4)

Answer 35

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