Brainscape's Knowledge GenomeTM

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


See full index

Physiology > Energy expenditure > Flashcards

Energy expenditure Flashcards

1
Q

What’s the equation for RER?

A

VCO2/VO2

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

What does RER stand for?

A

Respiratory energy ratio

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

What is energy measured in?

A

Joules or kilocalorie

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

What is the purpose of energy?

A

Growth, repair , digestion , storage , PA

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

What is the common link in optimising endurance performance?

A

Conservation of energy

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

What’s the supply of energy?

A

1st law of thermodynamics

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

What is direct calorimetry

A

Direct measure of heat production

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

What is indirect calorimetry

A

A measure of CO2 production and O2 consumption

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

What’s a example of indirect calorimetry

A

Douglas bag

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

What’s the equation for energy expenditure?

A

VO2 (Lmin-1) x kcal equivalent (kcal L-1)

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

What’s a bomb calorimetry

A

Bomb calorimeters operate on the principle of direct calorimetry measuring the heat liberates as the food completely burns

So , directly measures the energy value of the food

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

How does a bomb calorimeter work

A

The food is within a sealed chamber charged with oxygen at high pressure
An electric current moving through the fuse at the tip ignites the food
As the food burns a water jacket surrounding the bomb absorbs the heat liberated

Because the calorimeter remains fully insulated , the increase in water temp directly reflects the heat released during a foods oxidation (burning)

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

How many joules in 1kcal

A

4186 J

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

What’s the RER calculation for carbohydrates

A

CHO =VCO2/VO2 = 6CO2/6O2 =1.0

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

What’s the RER calculation for fats

A

FAT=VCO2/VO2=16CO2/23O2 =0.70

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

What is the average daily energy expenditure

A

1800-3000

17
Q

What is metabolic rate

A

Rate of which energy is used

18
Q

What is basal metabolic rate

A

Minimum amount of energy to carry out essential physiological functions

19
Q

What is resting metabolic rate

A

Like basal metabolic rate but does not require the participation to fast or sleep

20
Q

What factors affect resting metabolic rate

A 
Age 
Bsa
Body temp
Hormones 
Psychological stress
21
Q

How do you calculate relative vo2

A

Vo2 x 1000 / bodymass

22
Q

1MET=

A

3.5ml

23
Q

What are the 3 energy systems

A

ATP PCR
GLYCOLYTIC
OXIDATIVE

24
Q

WHATS ATP PCR

A

One energy system that is high power and short duration

25
Q

Where is ATP PCR produced

A

In the sarcoplasm

26
Q

What is the GLYCOLYTIC system

A

Second energy system moderate power and short duration
Breakdown of sugar and carbs
Can be anaerobic of aerobic

27
Q

What is the oxidative system

A

Third energy system low power and long duration
Found in the mitochondria
Can only be aerobic
I.e kerbs cycle

Physiology (4 decks)

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