Flashcards
Nutrition Lecture #2
Cards in this deck (24)
- 1EERestimated energy requirement
- 2ADMRacceptable macronutrient distribution range
- 3DRIdietary reference intake
- 4EARestimated average requirement
- 5RDArecommended dietary allowance (RDA)
- 6AIadequate intake
- 7ULtolerable upper intake level
- 8Median intakenumber which divides the population by half
- 9shaded area under the curveprobability of adequate or inadequate nutrient intake
- 10definition of EARnutrient intake that meets the requirement of 50% of individuals in a group (i.e. sex; age)
- 11How is EAR used?to estimate the probability that an individual's usual intake is meeting his/her requirement; to estimate what proportion of a group is meeting their requirements
- 12How is EAR determined?biochemical criterion that allows you to determine the intake at which an individual's requirement is being met; can be determined by the requirement distribution from a sample of pop.
- 13depletion-repetition experimentdepletion: fed a vitamin X-free diet; levels of vitamin X in blood are tracked; eventually levels decline until no vitamin X is detected (individual deficient)
repletion: begin refeed vitamin X; individual reaches level where blood is saturated with vitamin X - 14nutrient requirement vs. nutrient intakenutrient requirement = experimentally determined requirement for a nutrient; amount required to maintain health
nutrient intake = amount of nutrient consumed; determined by the composition of the diet - 15RDA definitionintake that ensures a 90% probability of meeting your requirement
RDA = EAR + 2 standard deviations - 16How is the RDA used?as a goal for an individual's intake b/c it is almost certainly adequate
- 17EAR cutpoint methodproportion of the population whose intake is less than the EAR = proportion of the population that is NOT meetings its requirement
- 18How does Health Canada determine adequate intake for a population?if the proportion of the pop. whose intake is below the EAR is 10% or less.
- 19Canadian Community Health Surveymeasured nutrient intake and used the EAR cut point method to determine the adequacy of nutrient intake
- 20energy balance i.e. weight is unchangedenergy content (kcal) of food consumed = energy content expended for metabolism & physical activity
- 21positive energy balance i.e. weight gainenergy content (kcal) of food consumed > energy content expended for metabolism & physical activity
- 22negative energy balanceenergy content (kcal) of food consumed < energy content expended for metabolism & physical activity
- 23Which variables are involved in determining the average needs of adults?- physical activity component
- age
- height (won't affect much)
- weight
- different for men & women - 24—
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- Second year Nutrition Flashcards on Nutrition Lecture #2, created by thashali.anthony on 25/09/2015.
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- thashali.anthony
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