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
Blood analysis or respiratory analysis: direct measurement
blood
26
Blood analysis or respiratory analysis: invasive
blood
27
Blood analysis or respiratory analysis: open or close-circuit spirometry, less invasive
respiratory
28
Blood analysis or respiratory analysis: uncomfortable and inconvenient
blood
29
science that quantifies the heat released from metabolism
calorimetry
30
Factors that must be measured to determine VO2
VI STPD %O2e %CO2e
31
STPD =
0.885
32
What type of analysis did we do in this lab
indirect gas collection
33
kilocalorie (kcal) =
amount of energy (heat) needed to increase 1 kg (1 liter) water 1 degree C
34
Calorie -
amount of energy (heat) needed to increase 1 gram (1 mL) of water 1 degree C
35
Calories per kcal
1000
36
units of caloric expenditure rate (CER)
kcal X min ^-1
37
how to determine CER
(kcal X L O2^-1) X (L O2 x min^-1)
38
Describe a graph of RER vs workload
positive linear slow from 0.7 to 1.0
39
How does training affect the graph of RER vs workload
moves the line to the right
40
Describe the graph of VO2 vs workload
linear slope form 3.5 ml/kg/min to a plateau point
41
How does training affect the graph of VO2 vs workload
moves the line down
42
VI =
volume inhaled (L/min)
43
VO2 =
VO2i - VO2e
44
RER =
VCO2 / VO2
45
VCO2 =
VCO2e - VCO2i
46
RER is used to determine this
kcal / L O2 consumed
47
Resting O2 consumption
3.5 ml/kg/min
48
Absolute value (units) in regard to VO2
L/min
49
Relative value (units) in regard to VO2
ml/kg/min
50
Average collage kind VO2max
30-35 ml/kg/min
51
Average elite athlete VO2max
60-75 ml/kg/min
52
Average pulmonary patients VO2max
13-15 ml/kg/min
53
Two physiological components of VO2max
cardiac output max (delivery) | A-V O2 diff-max (utilization)
54
CO =
HR x SV
55
THis accounts for most of the differance in Cardiac Output
stroke volume (SV)