Fat Intake and Supplementation Flashcards Preview

Sports Nutrition and Metabolism Yr 2 > Fat Intake and Supplementation > Flashcards

Flashcards in Fat Intake and Supplementation Deck (45)
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1

What is the process called where 3 fatty acids react with a glycerol molecules to produce a triglyceride

Esterification

2

What does esterification form?

triglyceride
water

3

Are short chain FFAs more liquid or solid

Liquid

4

Are long chain FFAs more liquid or solid

Solid

5

Saturated FAs have what type of carbon bonds

Single carbon bonds

6

Unsaturated FAs have what type of carbon bonds

Double carbon bonds

7

Which type of FA stimulates liver to form cholesterol

Saturated

8

Which type of FA can be mono or poly

Unsaturated

9

What does Trans FAs occur as a result of

Processing- e.g. heat and light

10

Define essential FA

must be obtained from the diet

11

Give an example of an essential FA

Omega 3,6 or 9

12

Define non-essential FA

can be synthesised endogenously

13

Give an example of a non-essential FA

Any fat that isn't an omega one.. i.e. palmitate

14

By what process does fat travel through the phospholipid bilayer?

Facilitated diffusion

15

If there is higher levels of n-3 PUFA, how does this effect the production of intracellular mediators

Less inflammatory mediators

16

Define adipose tissue

A store of fat for energy in the fasted state

17

What type of cytokines are produced by adipose tissue

Pro-inflammatory cytokines

18

Give 3 examples of hormones secreted by adipose tissue

Leptin
Adiponectin
ADMA
Angiotensin 1/II
Oestrogen

19

How are lipoproteins transported in the blood

in chylomicrons

20

Describe the transport of fat

Lipid in GI tract --> chylomicron --> lipoprotein lipase --> HDL (extrahepatic) or LDL (liver) --> cholesterol

21

Describe simply glycolysis (with fat) steps

Glucose --> pyruvate (--> lactate) --> PDC --> acetyl-CoA --> acetyl carnitine --> B-oxidation

22

Describe simply long-chain fat oxidation steps

LCFA --> Acyl CoA --> CPT1 + CACT + CPT2 --> acyl-CoA --> B-oxidation

23

What are the most immediately available form of lipid

Intramuscular triglycerides

24

What is the athlete's paradox (fats)

large lipid droplets, close to the mitochondria are beneficial to performance.
There is a U Shape where both an athlete and T2D have high IMCL, but athletes have a high oxidative capacity and insulin sensitivity

25

What is the approximate maximum oxidation % for fats to be effective at

65-70%

26

what is the process called where TG's are changed to FAs, and what hormone is used

lipolysis + Hormone sensitive lipase

27

Give a hormone which increase the activity of HSL

Adrenaline/Noradrenaline

28

Give a hormone which decreases the activity of HSL

Insulin

29

Do type 1 or 2 fibres have a higher density of fatty acid transporters

Type 1

30

Why do type 1 fibres have a higher density of fatty acid transporters

Type 1 fibres are the predominant site of fat oxidation. They can oxidise the FA, transport it to tissues, and to the cells