Glycaemic Index practical

1
Glycaemic Index practical
Human Nutrition HLTH 2001
Starts week 8 (Monday 30th April 2007) Room
P6-19
2
Things to do BEFORE arriving at the practical

• Read OHS guidelines
• Wear closed in shoes
• without them you will not be permitted into the
  practical
• Fast for at least 4 hrs
• This means no food and no fluid (except water)

3
Where is the prac?

• Go to P6-19 for the prac
• You need to be on time
• Expect the pracs will take the full 2 hrs

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Aim

• To compare the glycaemic effect of different
  CHO-rich foods ? exercise

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What youll do

• Test foods containing 50g CHO in each serve
• Note there are different CHO concentrations in
  each food
• different serve sizes for each food
• Test impact of exercise on the response to foods

6
The subjects

• If you dont cope well with blood TELL BRUCE
• If you have diabetes you should not be a test
  subject
• If you are pregnant you should not be a test
  subjects
• If you have a strong food allergy you should not
  be a test subject
• If you cant eat or dont like the foods do NOT
  volunteer to be a test subject

7
Collecting the Data

• Work in a group of 4 students
• Subjects will have finger prick blood samples
  collected
• 1 will eat exercise and 1 will eat rest
• 4 foods tested in each condition in each class
• 15 prac classes
• Whole 210 students will share results ie there
  will be one data set to use for the prac write up

8
Foods

• Jelly Beans
• Baked Beans
• Gatorade
• Apple Juice

9
Blood glucose sampling

• 10 finger prick blood samples
• Monitors absorption of glucose (from food) over
  time
• shows different rates of absorption according the
  Glycaemic Index of the food
• Shows different patterns of absorption depending
  upon the presence or absence of exercise

10
Postprandial Blood Glucose Levels

• Postprandial
• after food
• blood glucose levels peak
• return to normal levels
• action of insulin.

Time after eating
11
The Data

• Once all practical classes have completed this
  practical the data will be made available to the
  whole course.
• A powerpoint file with tips on writing this
  report will be available on the course homepage
  when the data is ready

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When is this report due?

• If you choose to submit this report it is due on
  Tuesday 12th June by 3pm (swotvac) for all
  students except those in class 25558 (due Tuesday
  19th June)