Proteins Flashcards

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1
Q

What is the catabolic state caused by insufficient protein intake called?

A

Gluconeogenesis.

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2
Q

What are the three main components of amino acids?

A

Nitrogen, carboxylic acid, and side chain R.

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3
Q

What is gluconeogensis?

A

synthesis of new glucose molecules from non-carbohydrate sources such as lactate, glycerol, and certain amino acids.
-occurs in the liver.

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4
Q

What condition can result from insufficient albumin?

A

Edema (medical condition caused by swollen tissues).

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5
Q

What can happen to the liver due to impaired synthesis of fatty acid-transporting proteins?

A

Fatty Liver

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6
Q

What is the AMDR (Acceptable Macronutrient Distribution Range) for protein intake?

A

10-35%.

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7
Q

How does the Resting Metabolic Rate (RMR) of adolescent athletes compare to adults?

A

Higher in adolescents compared to adults.

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8
Q

What is the protein recommendation range for young athletes?

A

1.35-1.6g/kg of body mass.

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9
Q

What balance is needed for growth in children and adolescents?

A

Positive nitrogen balance.

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10
Q

What are three outcomes expected if protein requirements are met in young athletes?

A

1) Replace exercise-induced amino acid oxidative losses,
2) Enhance whole-body net protein balance,
3) Support normal growth and development.

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11
Q

What can excess protein intake potentially limit?

A

Intake of other nutrients

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12
Q

What organ system is affected by renal acid load from high protein intake?

A

Kidneys - acid needed for kidneys to process and excrete to maintain body’s acid-base balance.

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13
Q

Why do children have higher protein requirements compared to adults?

A

To support growth and development.

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14
Q

What is one consequence of insufficient protein intake on growth?

A

Inadequate or stunted growth.

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15
Q

What is the primary function of amino acids in the body?

A

They are the building blocks of proteins.

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16
Q

What are the differences in leucine concentration between resistance and endurance exercise?

A
  • Resistance exercise has higher concentrations of Leucine.
  • Endurance exercise leads to greater leucine oxidation causing lower concentrations of leucine.
17
Q

what is the role of leucine activating mTORC1 pathway to stimulate protein synthesis

A
  • Leucine is uniquely sensed by cells, particularly muscle cells, as an indicator of overall protein availability. (Signalling molecule).
  • This activation increases the efficiency of mRNA translation, leading to enhanced protein synthesis.
18
Q

Protein recommendation POST EXERCISE

A

0.4g/kg

19
Q

Protein recommendation for young athletes:

A

1.35 - 1.6g/kg

20
Q

Protein recommendations for masters athletes:

A

0.75g/kg

21
Q

What happens to protein oxidation with training?

A

It decreases