Do you struggle with pre and post exercise nutrition?
What should i eat before and after a workout?
First things first…carbohydrates,
proteins and fats are important for the body before and after exercise. Exercising muscle preferentially uses carbohydrates
from stored glycogen, but fats are also an important fuel source for
energy production during exercise. Fats and carbohydrates are the two major
fuel sources during exercise. Fats must be translocated and broken down from
their storage form before they are used. Typically there is enough carbohydrate
stored as muscle glycogen for exercise but as muscle glycogen stores decline,
the skeletal muscle will then use some amino acids (basic components of all
protein). More specifically, the amino acid leucine is used for energy.
It is important to consume an
adequate amount of carbohydrates exercise to delay fatigue and minimize
gastrointestinal distress. It is also important to consume enough fluids to
prevent hypohydration.
Now, lets talk
about pre-exercise meals. These meals
should contain, carbohydrates, protein, and fat. Protein and fat can aid in
satiety and prevent feelings of hunger. Liquids should also be consumed prior
to exercise.
The recommendation: 1 g
of carbohydrates per kilogram of
body weight to be consumed
1 hour prior to exercise.
Example: 2 g of
carbohydrates per kg of body weight should be consumed 2 hours prior to exercise.
Example: 3-4.5
g/kg should be consumed 3-4 hours prior to exercise.
Now, lets talk
about post-exercise meals. These
meals should also contain carbohydrates, protein and fat. It is important to
replenish liver and muscle glycogen stores that were lost during exercise.
Adequate fluids should also be consumed after exercise. Timing is important
after exercise, therefore, in order to maximize the rate at which muscle
glycogen is replaced, carbohydrates should be consumed as soon as possible
after exercise.
The recommendation: 1.5 g of carbohydrates per kilogram of
body weight be consumed the first hour
immediately after exercising.
Including
protein in your post-exercise meal is also important because it can increase
the rate at which muscle glycogen is replaced.
Now that we have
some understanding of the importance or carbohydrates, protein, and fat before
and after exercise, these are just stated, recommendations. Each
individual has their own set of preferences and can tolerate certain foods
before and after exercise. Timing, amount, and type of food can vary from
person to person.
-NB
Dunford, M.,
& Doyle, J. A. (2015). Nutrition for
sport and exercise (3rd ed.). Stamford, CT: Cengage Learning.
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