Energy, Metabolism, and Nutrients Flashcards

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1
Q

How many ATP molecules does PCr breakdown produce?

A

1 ATP molecule

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2
Q

How many ATP molecules does anaerobic glycolysis produce (glucose and glycogen?

A

Glucose - 2 ATP
Glycogen - 3 ATP

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3
Q

How many ATP molecules does aerobic breakdown of glucose produce?

A

36 ATP

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4
Q

How many ATP molecules does aerobic breakdown of palmitate produce?

A

130 ATP

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5
Q

What impact does increasing exercise intensity have on ATP, PCr, and lactate?

A

ATP- stays the same
PCr - decreases
Lactate - increases

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6
Q

As sprint duration increases (0-30 secs), what happens to the source of energy ?(graph)

A
  • ATP levels decrease gradually
  • PCr levels decrease
  • Glycolysis stays roughly the same (slight decrease).

Mean power reduces accordingly with a decrease in anaerobic ATP utilization.

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7
Q

After how long is carb ingestion needed to maintain blood glucose and carb oxidation?

A

2hrs exercise

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8
Q

What are typical blood glucose stores for a 70kg man?

A

3-5g

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9
Q

What are typical liver glycogen stores for a 70kg man?

A

80-100g

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10
Q

What are typical muscle glycogen stores for a 70kg man?

A

300-400g

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11
Q

Approx 1500-2000 kcal = 6000-8000 kJ. Therefore 1 kcal = ?kJ

A

1kcal = 4.184 kJ

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12
Q

What are typical adipose tissue stores for a 70kg man?

A

3.5-14 kg

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13
Q

What are typical muscle triglyceride stores for a 70kg man?

A

200-500g

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14
Q

What are typical adipose tissue stores for a 70kg man?

A

3.5-14kg

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15
Q

Is carbohydrate considered essential?

A

No - due to gluconeogenesis.

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16
Q

What % of energy intake should carbs be?

A

60%

17
Q

What is the difference between short, medium, and long chain FA?

A

–Short chain (SCFA; C6 or less)
–Medium chain (MCFA; C8-C10)
–Long chain (LCFA; C12 or more)

18
Q

What is the difference between saturated and unsaturated fatty acids?

A

Unsaturated FA have 1 or more double bonds, saturated have no double bonds.

19
Q

What % of energy intake should fats be?

A

30%

20
Q

What % of energy intake should protein be?

A

10%

21
Q

What makes a protein ‘complete’?

A

A complete protein contains all 9 essential amino acids.

22
Q

What are the general dietary guidelines (not athletes) based on a 2000 kcal diet (include all macronutrients)?

A

Fat - <65g (<20g saturated)
Carbs - 300g
Fibre - 25g
Protein - 50g

23
Q

What % of human body is water, and how much is found in cells, and extracellular?

A

60%
- 2/3 found in cells
- 1/3 extracellular

24
Q

What are the functions of water in the body?

A

– Nutrient transport
– Protection
– Temperature regulation
– Biochemical reactions
– Medium for reaction