Week 5 Flashcards
What are the three categories amino acids are split into and how many of each ?
Essential (9), Conditionally Non-essential (6), Non-essential (5)
Whats the the defintion of conditionally essential amino acids?
Useful in times of illness and stress and then they become essential like in pregnancy glycine and arginine
List 2 things proteins are used for ?
- Proteins provide structure to all cells in the human body
- Many proteins are enzymes that increase the rate of metabolic reactions
What is positive protein balance ?
when the protein consumed exceeds the protein losses
How much of 1g nitrogen equals protein ?
6.25g
What is negative protein balance ?
when the protein losses are greater than the protein consumed
How can you measure the nitrogen balance from an individual ?
Via the urine and faeces and the nitrogen content of that and compare it to the nitrogen consumed
Where is most protein metabolised ?
In the liver
What other ways otherthan urine and faeces can you measure nitrogen output from an individual ?
Via sweat, skin and hair
What is the RNI of correct protein intake ?
0.75g/kg/d
When is the optimum time for protein synthesis ?
Greatest in a fed state
When is the sub optimal time for protein synthesis ?
When in a fasted state
When are the muscles most responsive to protein ?
After the first meal after exercise, however its not the be all and end all
What changes would you see at a molecular level with resistance training ?
There would be more myofibrillar proteins
What changes would you see at a molecular level with endurance training ?
There would be more mitochondrial proteins and they would be more efficient
