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Nutr-484-Exercise phys > Lab Test 1 (lab 3) > Flashcards

Lab Test 1 (lab 3) Flashcards

1
Q

Purpose of the open circuit, indirect calorimetry (3 variables)

A

VO2
Respiratory quotient
caloric expenditure

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2
Q

VO2

A

volume of oxygen consumed per unit time

O2 consumption rate

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3
Q

T/F: we consume all of the O2 we inhale

A

F

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4
Q

VO2 does these two things

A

measure of O2 used for energy purposes

measure and compare cardiorespiratory fitness

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5
Q

R, RQ, or RER

A

respiratory quotient

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6
Q

RER

A

respiratory exchange ratio

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7
Q

Respiration quotient does these two things

A

indicates the type of energy substrate being utilized

Non-protein RER

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8
Q

R = 0.70

A

100% fat being utilized

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9
Q

R = 1.0

A

100% CHO being utilized

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10
Q

T/F as intensity increases R should decrease

A

F

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11
Q

R = (formula)

A

VCO2 / VO2

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12
Q

CER

A

caloric expenditure rate

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13
Q

caloric expenditure rate is

A

calories (kcals) expended per minute

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14
Q

Caloric expenditure rate is directly related to this

A

O2 consumption

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15
Q

open circuit indirect calorimetry is used to determine the activities of this type of respiration

A

Aerobic

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16
Q

T/F indirect calorimetry is rarely used, and direct calorimetry is far more common in the lab

A

F

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17
Q

The more O2 available or the more O2 you can utilize means this

A

the more energy you can produce

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18
Q

This results in a backup in metabolic pathways and the failure to produce energy

A

no available O2, as a result of increasing intensity

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19
Q

In aerobic respiration glycolysis leads to this, which leads to this

A

Krebs cycle

electron transport system

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20
Q

In anaerobic respiration lactic acid leads to this and this

A

Lactate + H

Fatigue

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21
Q

What is VO2max

A

maximal ability to take in, transport, and utilize O2 during exercise

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22
Q

2 ways to measure O2 consumption

A

Blood analysis

respiratory analysis

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23
Q

Blood analysis or respiratory analysis: catheterize the femoral vein and artery

A

blood analysis

24
Q

Blood analysis or respiratory analysis: direct = chamber measurement

A

respiratory

25
Q

Blood analysis or respiratory analysis: direct measurement

A

blood

26
Q

Blood analysis or respiratory analysis: invasive

A

blood

27
Q

Blood analysis or respiratory analysis: open or close-circuit spirometry, less invasive

A

respiratory

28
Q

Blood analysis or respiratory analysis: uncomfortable and inconvenient

A

blood

29
Q

science that quantifies the heat released from metabolism

A

calorimetry

30
Q

Factors that must be measured to determine VO2

A

VI
STPD
%O2e
%CO2e

31
Q

STPD =

A

0.885

32
Q

What type of analysis did we do in this lab

A

indirect gas collection

33
Q

kilocalorie (kcal) =

A

amount of energy (heat) needed to increase 1 kg (1 liter) water 1 degree C

34
Q

Calorie -

A

amount of energy (heat) needed to increase 1 gram (1 mL) of water 1 degree C

35
Q

Calories per kcal

A

1000

36
Q

units of caloric expenditure rate (CER)

A

kcal X min ^-1

37
Q

how to determine CER

A

(kcal X L O2^-1) X (L O2 x min^-1)

38
Q

Describe a graph of RER vs workload

A

positive linear slow from 0.7 to 1.0

39
Q

How does training affect the graph of RER vs workload

A

moves the line to the right

40
Q

Describe the graph of VO2 vs workload

A

linear slope form 3.5 ml/kg/min to a plateau point

41
Q

How does training affect the graph of VO2 vs workload

A

moves the line down

42
Q

VI =

A

volume inhaled (L/min)

43
Q

VO2 =

A

VO2i - VO2e

44
Q

RER =

A

VCO2 / VO2

45
Q

VCO2 =

A

VCO2e - VCO2i

46
Q

RER is used to determine this

A

kcal / L O2 consumed

47
Q

Resting O2 consumption

A

3.5 ml/kg/min

48
Q

Absolute value (units) in regard to VO2

A

L/min

49
Q

Relative value (units) in regard to VO2

A

ml/kg/min

50
Q

Average collage kind VO2max

A

30-35 ml/kg/min

51
Q

Average elite athlete VO2max

A

60-75 ml/kg/min

52
Q

Average pulmonary patients VO2max

A

13-15 ml/kg/min

53
Q

Two physiological components of VO2max

A

cardiac output max (delivery)

A-V O2 diff-max (utilization)

54
Q

CO =

A

HR x SV

55
Q

THis accounts for most of the differance in Cardiac Output

A

stroke volume (SV)

Nutr-484-Exercise phys (14 decks)

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