Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Exercise Physiology Lab > Lab Exam 2- Lab 6 > Flashcards

Lab Exam 2- Lab 6 Flashcards

1
Q

what is the ‘gold standard’ for determining cardiorespiratory fitness

A

VO2 max

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the most accurate method of determining VO2 max?

A

by measuring O2 consumption via indirect calorimetry during maximal graded exercise test on a treadmill or bicycle ergometer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what type of exercise is recommended by American College of Sports Medicine and CDC

A

30 minutes or more of moderate-intensity physical activity on most (preferably all) days of the week

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

how are exercise intensities expressed

A

VO2 max
target HR
METs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

more specific exercise recommendations require

A

knowing VO2 max or max HR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are the two kind of tests used to estimate VO2 max

A

exercise and non-exercise tests

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

exercise tests

A

involve equations that predict O2 consumption at a given work rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what does a common estimate of maximal aerobic capacity involve

A

the measurement of exercise or post exercise HR responses to submaximal workload

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

why does the measurement of exercise or post exercise HR responses to submaximal work load help estimate maximal aerobic capacity?

A

because there is a positive linear relationship between heart rate and power output over a wide range of exercise intensities

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is important when measuring HR during exercise

A

that steady state HR is achieved

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

when has an individual reached steady state heart rate

A

when their HR does not change more than 6 bpm for 2 consecutive min

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is the purpose of a graph showing HR vs VO2

A

so that the trend on the graph represents the linear rate of HR increase per unit of VO2 increase

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

how is VO2 calculated in this lab

A

using regression equations based on work rate on a treadmill or bike ergometer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what is the linear range between HR and exercise intensity best determined at

A

between 120 bpm and 85% of max HR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

what is the benefit of graphing someones HR at submaximal exercise at HR >120bpm but less than 85% VO2 max?

A

a line connecting those points can be extrapolated to the subj’s age predicted max HR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

how is VO2 max estimated on a VO2 vs HR graph

A

with subj’s maximal HR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

each persons HR-VO2 line will be

A

linear but the slope of the line varies based on fitness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

a more trained individual : ?HR at a given VO2

A

will have a lower HR at a given VO2 and will achieve a higher O2 consumption before reaching their max HR

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Step Test Recovery HR

A

used to estimate CV fitness and VO2 max
involves the measurement of HR immediately after performing a 3 minute stepping exercise

based on recovery HR
4-step cadence

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

the magnitude with which a subjects HR increases after 3 min of a stepping test is inversely correlated to

A

VO2 max

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

subjects with a greater aerobic capacity will have a ___ HR following a 3 min step test as compared to their gender matched counterpart

A

lower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

non-exercise regression equations

A

developed for predicting an individuals VO2max based on predictor variables such as age, gender, body comp, and self reported physical activity levels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

predictive VO2 max regression equations are derived from actually measuring

A

VO2 max in large numbers of subjects and the information from these subjects are used to develop an equation based on multiple regression model

24
Q

standard error of the estimate (SEE)

A

the error in estimations
describes how far off, on average, the predicted value is from the actual value

25
Q

if the SEE of a certain VO2 max prediction is 5 mL/kg/min and predicted VO2 max is 40 mL/kg/min, what is the likelihood of the VO2 max

A

between 35 and 45 mL/kg/min

40 +/- 5

26
Q

the most useful prediction equations have a _____ SEE

A

smaller

27
Q

three assumptions that contribute to the SEE

A

1) linearity of the HR-VO2 relationship
2) Similar max HR’s based on age
3) constant exercise economy

28
Q

what effects the slope of the HR-VO2 relationship

A

emotion, hydration, O2 drift, temp, diet, etc

29
Q

what is the standard deviation for the average max HR of individuals of the same age

A

+/- 10 bpm

30
Q

what does predicted VO2 max depend on

A

the O2 cost of certain work rates

31
Q

what are other factors that effect exercise economy

A

cadence and test modality

32
Q

VO2 max predictions based on submaximal HR have an SEE of

A

+/- 5 mL/kg/min

33
Q

improvements in cardiorespiratory fitness are dependent on

A

proper frequency, duration, and intensity of exercise

34
Q

what is the prescription for developing and maintaining cardiorespiratory fitness according to American College of Sports Medicine

A

exercise 3-5 days per week for 20-60 min at 50-85% VO2 reserve

35
Q

VO2 reserve

A

describes the actual physiological range of O2 consumption for an individual

36
Q

how to calculate VO2 reserve

A

taking the difference between resting VO2 and VO2 max

VO2max-VO2rest

37
Q

Heart rate reserve (HRR)

A

same concept as VO2R

HRmax-HRrest

38
Q

when exercise intensities are set based on VO2R, the percent values are approximately equal to

A

%HRR

39
Q

what are the two methods used to account for variability in fitness

A

VO2R and HRR

40
Q

what is commonly thought of of the more accurate method for prescribing intensities and why

A

because someone’s 50% HRmax may not mean VO2max is 50% and because HRR and VO2R are coupled over an entire range of exercises, many think that HRR is more accurate

41
Q

how are target VO2R and HRR determined

A

by multiplying desired exercise intensity by the reserve, and adding the resting value

targetVO2R= exercise intensity x VO2R (or HRR) + VO2 rest

42
Q

MET

A

another way of expressing exercise intensity by using metabolic equivalents
a unit used to reflect one’s normalized RMR (i.e. resting O2 consumption)

43
Q

1 MET =

A

3.5 mL/kg/min

44
Q

when using METs, exercise intensity is expressed in

A

multiples of the estimated RMR

45
Q

why are METS a good way of expressing exercise intensity

A

because the MET system is relatively simple and theoretically easier to understand and remember in comparison to HR or VO2 values

46
Q

describe the test done in lab 6

A

HR extrapolation:
3 groups
submaximal HR extrapolation on treadmill or ergometer (greater than 120 bpm but less than 85% max predicted HR) * must be steady state HR
exercise at work rate = 120 bpm
then exercise at work rate <85% max predicted HR

Step test recovery HR:
22 step ups/min for females
24 step ups/min for males
3 minutes total, rest for 5 seconds, measure HR 15 seconds afterwards
multiply 15 sec HR by 4 to calculate recovery HR

47
Q

what is essential to maintain physical fitness and health in adults

A

a program of regular exercise that includes cardiorespiratory resistance, flexibility, and neuromotor exercise training beyond activities of daily living

48
Q

what other than physical activity may reduce incidence of CHD

A

educating adults on signs and symptoms of CHD and gradual progression of exercise

49
Q

ACSM recommends

A

large muscle mass groups
3-5 days/week
20-60 min
moderate and or vigorous exercise

50
Q

why estimate VO2 max?

A

1) prescription (intensity and supervision)
2) direct measurement of VO2 max not always possible

51
Q

two ways to predict VO2max

A

1) Non exercise equations
2) sub-max HR

52
Q

non-exercise equations

A

regression equations based on age, sex, BMI, PA-R, PFA

53
Q

PA-R

A

physical activity rating

54
Q

PFA

A

perceived functional ability

55
Q

submax HR

A

regression equations
1) extrapolation using age-predicted max HR
2) Step Test

56
Q

1 SEE describes

A

68% of estimates

Exercise Physiology Lab (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions