Kinesiology 3339A/B Lecture : Exercise Nutrition - Lecture 25

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Complete protein: all aas in protein go into free pool there is avid quantities to make body protein. retained nitrogen is equal to absorbed nitrogen y biological value = 100% Ideal situation: anything less than that, means that some of the aas that you absorb aren t being retained. the lower the percentage, the worst the protein source is. nitrogen excretion is increased y retained nitrogen is less than absorbed: biological value is lower than 100, worse quality of protein. If biological value -50: 50% of what you absorb from protein you eat = retained. The other half is metabolized and excreted from body. Milk = high quality protein: 95% deficient in one of the essential aas: you retain less of what you absorb, why it s important to combine veggies to get complete proteins. Some of these are tested just on animals: may not be exactly accurate for humans.

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