Lab 2 - intro to VO2max measurements

Question 1

one of the most widely used measurement methods in the field of exercise physiology

Answer 1

open-circuit spirometry

Question 2

the values obtained by open-circuit spirometry include (3)

Answer 2

oxygen consumption (VO2)
carbon dioxide production (VCO2)
minute ventilation (Ve)

Question 3

goal of open-circuit spirometry

Answer 3

obtaining a VO2 max value

Question 4

this is the prefered method for establishing an individual’s ____ and assesses an individual’s ____

Answer 4

aerobic capacity, ability to use the aerobic energy system

Question 5

2 variables are of particular interest when assessing one’s aerobic fitness levels, name them

Answer 5

VO2max/VO2peak value and ventilatory threshold value

Question 6

What is the VO2max/VO2peak value?

Answer 6

maximum or peak amount of oxygen an individual’s body can use per minute

Question 7

units of VO2max/VO2peak (2)

Answer 7

L/min and mL/kg/min when using the subject’s body weight

Question 8

What is the ventilatory threshold

Answer 8

the point in a VO2max test where pulmonary ventilation (Ve) increases disproportionately relative to increases in oxygen consumption

Question 9

ventilatory threshold is thought to be cause by what

Answer 9

Co2 release in the buffering of lactate

Question 10

t/f the excess CO2 from lactate surproduction stimulates ventilation, thus increasing the Ve/Vo2 ratio

Answer 10

true

Question 11

If the VO2max is seen as an individual’s upper limit for aerobic exercise, then the VT determines what

Answer 11

how much of that limit can effectively be used for a significant amount of time (aerobic efficiency)

Question 12

This information (Vo2 max and VT) can be used to adapt a training regimen in the hope of what

Answer 12

increasing the proportion of the VO2max that can be effectively used

Question 13

what is Vi

Answer 13

volume of inhaled air (L/min)

Question 14

what is FiO2

Answer 14

fraction of oxygen in inhaled air

Question 15

what is FeO2

Answer 15

fraction of oxygen in exhaled air

Question 16

what is Ve

Answer 16

volume of exhaled air (L/min)

Question 17

all values in the datasheet are calibrated for STPD, what is that

Answer 17

Standard Temperature-Pressure-Dry

Question 18

What is the haldane tranformation used to

Answer 18

to determine the volume of air one inhales

Question 19

what is FeN2

Answer 19

fraction of nitrogen in exhaled air

Question 20

what is FiN2

Answer 20

fraction of nitrogen in inhaled air

Question 21

When determining FiN2 (%N2), sum the values of __ and ___ and then subtract that value from 1.00 (100%)

Answer 21

FiO2 (%O2) + FiCO2 (%CO2)

Question 22

the RER provides what

Answer 22

an estimate of a subject’s effort (indicator if that person is at nearing exhaustion)

Question 23

what causes the RER to increase over 1.10

Answer 23

hyperventilation

Question 24

what is RQ

Answer 24

respiration quotient

Question 25

what does RQ provides

Answer 25

approximating the nutrient mixture catabolized for energy during rest and/or steady-state aerobic physical activity

Question 26

t/f RER and RQ is the same thing

Answer 26

false, same formula but not same meaning

Question 27

When CHO is being catabolized, the amount of CO2 produced ___ the amount of O2 used

Answer 27

equals

Question 28

When fat is being catabolized, the amount of CO2 produced ___ the amount of O2 used

Answer 28

is less than

Question 29

pure CHO utilization = RQ of ___

Answer 29

1.00

Question 30

pure fat utilization = RQ of ___

Answer 30

about 0.70

Question 31

VO2 plateau is attained if

Answer 31

VO2/kg before the last load change is less than 2mL/kg/min of the value after the last load change