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Protein
Good sources of
protein include meat, fish, eggs, soya, milk, cheese, nuts,
pulses and beans. Unfortunately, some of the foods that are
good sources of protein e.g. dairy products, are also high in
fat so try to choose lower fat alternatives where possible (skimmed/
semi-skimmed milk and low fat yogurts, lean meat cuts, soy and
whey protein powder).
Proteins are important for tissue growth, repair and maintenance.
It is not stored in your body thus is not easily used as an
energy source. However, if you have not got enough carbohydrate
and fats available, your body may use proteins as a fuel to
produce energy or glucose. This means that your body will use
the proteins intended for muscle repair and growth as an energy
source. Protein is also important for hormones, enzymes and
the immune system.
In general, animal protein provides more value than vegetable
protein, but a combination of both will give you the balanced
protein intake.
Your body replaces approximately 5 million cells every second,
as a natural part of living and breathing. When you exercise
even more cells are killed off. This is why good quality protein
input is so important after exercise – it gets the rebuilding
underway properly and quickly.
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Since
protein is required for both muscle growth and repair,
sports participants may require an increased amount
of protein in their diet. As a guide, current knowledge
suggests that protein requirements for endurance athletes
are 1.2-1.4g protein per kg body weight per day, and
1.6-1.7g/kg body weight per day for weightlifters or
strength athletes. |
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