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Exercise Physiology Lab > Lab Exam 1- Lab 1 > Flashcards

Lab Exam 1- Lab 1 Flashcards

1
Q

absolute terms

A

actual measured values with units

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2
Q

cellular work

A

active transport

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3
Q

chemical work

A

involved in ATP biosynthesis

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4
Q

constant work rate test

A

work rate remains fixed throughout the test

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5
Q

cycle ergometer permits accurate measurement of

A

work (J) and power (W)

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6
Q

define power

A

the rate of work done

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7
Q

define work

A

the transfer of energy

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8
Q

what is the difference between kg and kgm/kpm

A

kg is a unit of mass
kgm or kpm is a unit of WORK

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9
Q

equation to calculate work

A

work= force * distance

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10
Q

examples of absolute intensities

A

100 W
10 MPH

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11
Q

exercise intensity can be expressed in

A

absolute and relative terms

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12
Q

exercise intensity is often expressed as

A

a % VO2 max (or relative aerobic)

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13
Q

graded exercise test

A

the work rate changes during the test and is often the IV

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14
Q

how do humans perform work

A

transform chemical energy from food

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15
Q

how can you convert kgm to kpm to J

A

multiply by gravity (9.81)

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16
Q

how do you quantify mechanical work

A

the product of the force applied on an object and the distance the object moves in the direction of the force while the force is applied

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17
Q

how else can energy be measured

A

calories

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18
Q

how else can power be expressed

A

kcal per minute
kgmmin-1
kpmmin-1

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19
Q

how else is work measured

A

Nm
kgm
kpm

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20
Q

how is resistance set on ergometer

A

by loosening or tightening the belt

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21
Q

how to calculate power

A

power=work/time

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22
Q

how to calculate work on a treadmill

A

multiply the vertical distance by the force on the treadmill (or the subjects body weight * gravity)

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23
Q

in this lab what are we quantifying

A

mechanical work

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24
Q

mechanical work

A

muscular contractions

25
Q

non steady state

A

any time a parameter is systematically changing over time

26
Q

physiological and performance data obtained in exercise physiology are expressed either as

A

absolute or relative terms

27
Q

relative physiological and performance parameters

A

values expressed in relation to another value

28
Q

relative exercise intensities are expressed relative to

A

each individuals maximal capacities

29
Q

SI unit for energy

A

Joule (J)

30
Q

SI unit for power

A

Watt (W)

31
Q

steady state

A

heart rate, VO2, etc become stable for an extended period of time

32
Q

the rate of transforming metabolic energy to physical performance (such as anaerobic or aerobic) is

A

power

33
Q

types of work

A

chemical work
cellular work
mechanical work

34
Q

what is another word for incline on a treadmill

A

percent grade

35
Q

what is energy

A

the capacity to do work

36
Q

what is required for a more accurate calculation of work on a treadmill

A

an incline

37
Q

what is the distance the wheel travels in the ergometer

A

6 m per 1 revolution

38
Q

what is the ergometer

A

a friction braked cycle which has a belt wrapped around the wheel

39
Q

what is the IV in constant work rate test

A

time

40
Q

what is the percent grade on an incline mean

A

the vertical rise per 100 units of belt travel
10% grade means you are going 10 m incline per every 100 m traveled

41
Q

what is the SI unit for work

A

Joule (J)

42
Q

when do non-steady state conditions always occur

A

at the initial transition to a new work rate (because it takes time for phsyiological parameters such as heart rate and VO2 to reach steady state)

43
Q

exercise physiology

A

the study of WHY and HOW the body responds and adapts to exercise

44
Q

function

A

WHY something happens
ex) HR increases to deliver more O2 to working muscle tissue

45
Q

mechanism

A

HOW something happens
ex) HR is increased through parasympathetic withdrawal and increased sympathetic nerve activity

46
Q

what do humans convert potential energy (food) into

A

chemical, cellular, and mechanical work

47
Q

how is work measured

A

J, kcal, kpm, kgm

48
Q

what measures work

A

ergometer (cycle or treadmill)

49
Q

how is power measured

A

W, kcal/min, kgm/min, kpm/min

50
Q

1 W = ? kpm/min

A

6 kpm/min

51
Q

In this lab, O2 consumption will always be expressed as

A

a rate
VO2

52
Q

graded exercise test (GXT)

A

in a GXT, the work rate is changing and is often the IV

53
Q

what is the IV in a graded exercise test

A

work rate

54
Q

what is the DV in a graded exercise test

A

VO2 (L/min)

55
Q

constant work rate exercise test

A

work rate is constant. time is often the IV

56
Q

what is the DV in a graded exercise test

A

VO2 (L/min)

57
Q

what is a measure of relative aerobic power

A

%VO2 max

58
Q
A

Exercise Physiology Lab (11 decks)

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