Nutrition Flashcards

1
Q

What nutrients is energy provided by

A

Carbohydrates
Protein
Fat

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2
Q

What are the nutrients

A

Vitamins- a c

Minerals- iron calcium

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3
Q

Why is fibre needed and what is it found in

A

Is not digested by the body, but is needed to keep the gut healthy
Fibre is found in fruits, vegetables, nuts and whole grain products

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4
Q

What is energy measured in

A

Calories or kilojoules

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5
Q

1 calorie =

A

4.2 kilojoules

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6
Q

How many kilojoules should you consume

A

8700kj per Day

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7
Q

What are the two different types of carbohydrates

A

Simple and complex

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8
Q

What are simple carbohydrates

A

Also called simple sugars
Found in white sugar, fruit milk lollies
Rapidly digested and absorbed providing quick release of energy

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9
Q

What are complex carbohydrates

A

Also called starches
Found in grain products such as bread, crackers, pasta and rice
Digested more slowly and provide long lasting energy

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10
Q

Unsaturated fats

A

Found in plant foods and fish
These fats help reduce heart disease and lower cholesterol
Examples: olive oil, canola oil, tuna, salmon, avocado

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11
Q

Saturated fats

A

Increase cholesterol levels which may lead to heart disease.
Found in meat and other animal products such as butter, cheese and milk

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12
Q

Sodium=

A

Salt

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13
Q

Why is protein needed and what is it found in

A

Build, maintain and repair body cells and act as a fuel for producing energy (growth and repair of tissue)
Found in meat, nuts, beans, lentils and tofu

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14
Q

Why are fats needed and what are they found in

A

Fats are the preferred fuel source during rest
Act as a fuel for energy and the development and maintenance of cell membranes
Found in butter, oils, fish

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15
Q

Why is iron needed and what is it found in

A

Iron is needed because it’s an essential part of blood

Iron is found in lean red meat, turkey chicken and fish (oily fish like mackerel or sardines)

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16
Q

Why is Vitamin a needed and what is it found in

A

Required for cell division and an important aspect of any growth that occurs in the body
Found in yellow, orange and red fruits and vegetables

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17
Q

Why is vitamin c needed and what is it found in

A

Important for the structure of tissues within the body and is required for building collagen
Found in kiwi fruit, brocchili , black currents and citrus fruits such as oranges or strawberries

18
Q

Why is carbohydrates needed and what is it found in

A

To provide fuel for energy

Rice pasta bread cereals vegetables fruits and honey

19
Q

high Gi foods

A

Are foods that produce energy quickly for a short amount of time
These foods are high in glucose
Lollies

20
Q

Low Gi foods

A

Low Gi foods are foods that digest slower and leave you fuller for longer allowing you to eat less calories without feeling hungry.
Examples of low Gi foods are pasta, grainy bread, beans

21
Q

Recommended diet for most athletes

A

55-60% CHO
25-30% Fat
10-15% Protein

22
Q

Why is nutrition important for athletes

A

Food fuels provide energy for the body (ATP resynthesis)
Delay onset of fatigue: depletion of fuel stores and dehydration
Ensure efficient recovery from training and events

23
Q

What is the purpose of a pre competition meal?

A

The purpose is to ensure that glycogen stores are topped up for the activity
Also ensuring that adequate hydration occurs prior to competition

24
Q

What are the guidelines for pre exercise nutrition?

A

High in complex carbohydrate (low Gi foods)
Low in fat
Low in simple sugars (high Gi foods)
Foods you enjoy and are comfortable with
Drink approximately 150 ml of fluid every 15 minutes in the two hours prior to competition

25
Pre exercise nutrition timeframe
Recommended that pre game meals are consumed about 2-4 hours prior to the game so it allows enough time for the food to pass through the stomach and into the intestines where it can be absorbed for use
26
Foods to eat 3-4 hours prior to exercise
Crumpets with jam or honey, and flavoured milk Baked beans on toast Breakfast cereal with milk Pasta or rice with low fat sauce
27
Foods to eat 1-2 hours prior to exercise
Liquid meal supplement Milkshake or fruit smoothie Cereal bars Fruit
28
Foods to eat less than an hour before exercise or during an event
``` Sports drink Carbohydrate gel Cordial sports bars Jelly lollies ```
29
What is carbohydrate loading
Changes in both training and nutrition to maximise stores of muscle and liver glycogen (carbohydrate) prior to endurance competition Consuming high CHO foods 3 days prior to competition whilst also decreasing training intensity
30
How many grams of carbohydrates should you be consuming during carbohydrate loading
7-10g
31
What benefits does carbohydrate loading have
Can improve performance by 3-5% | Increases stores of glycogen by 200-300% which delays fatigue and allows you to maintain higher intensities for longer
32
When should and shouldn't carbohydrate loading be used
Good for 90 minutes or longer event Shorter term is unlikely to benefit Not practical for team sport players
33
During exercise what should be consumed and why
``` Sports drink Easy to eat food bar CHO gels Sugar confectionary like lollies Keep hydrated Used to refuel the body quickly ```
34
What should be eaten Post exercise and when
In the first 15 minutes after exercise consume at least 50-80g of CHO (high Gi) During the following two hours after exercise consume a meal high in complex CHO (low Gi) this meal can also include some protein for muscle growth and repair
35
Why is post exercise nutrition necessary
At the completion of strenuous exercise the muscular stores of glycogen are depleted and need to be replenished
36
What are the effects of dehydration
Decreased blood flow to the skin and muscles causing fatigue
37
How can dehydration be avoided
Keep hydrated prior to the event | Approx 1 litre of fluid should be consumed as soon as possible after the competition
38
How does the body cool itself down
Muscles create heat as they contract so the blood vessels towards the skin vasodilate so that the heat produced by the muscles is carried to the skin where it is evaporated into the environment through sweat, cooling the body down
39
Why are sports drinks beneficial
They quickly replace fluids lost through sweating They top up muscle glycogen store Supply a boost of CHO
40
Isotonic
Contain similar concentrations of salt and sugar as in the human body Quickly replaces fluids lost through sweating and supplies a boost of CHO Preferred choice for most athletes Eg Gatorade and Powerade
41
Hypertonic
Contain a high concentration of salt and sugar than the human body Normally consumed post workout to supplement daily CHO intake and top-up muscle glycogen stored Ultra distance events High carb/ high energy / endurance / performance
42
Hypotonic
Contain a lower concentration of salt and sugar than the human body Quickly replaces fluids lost due to sweating Suitable for athletes who require fluid without a carbohydrate boost Watered down sports drinks "Light" eg Powerade zero