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What is next?
How have you achieved the learning objectives?
GOAL!
Our Lesson Objectives were to:
To consider the timing of dietary intake when exercising
To understand blood shunting
To recap knowledge of dietary requirements
Diet after Exercise
Exercise burns your energy sources so you should look to replace these after your work out
It is recommended to have some kind of carbohydrate-rich drink 15 minutes after exercise (e.g. energy drinks)
It is then recommended to eat a light meal 45 minutes to an hour after exercising
This is when the muscles absorb the nutrients most efficiently
Carbohydrates and protein needs to be eaten to restore energy and repair muscle
Diet before Exercise
Your body needs food to provide energy during exercise so it is important that you do not exercise on an empty stomach
However, eating immediately (1–2 hours) prior to exercise is not recommended
Once you have eaten, blood shunting occurs and blood is sent to the stomach and digestive system to help digest the food
Therefore there is less available blood to supply the working muscles with oxygen so performance will decrease
You are also likely to lack energy due to the digestive process
Diet after Exercise
Diet before Exercise
GCSE PE
When you exercise, blood supply is prioritised to the places that it is needed the most.
Blood Shunting
When you eat, blood is shunted to the stomach so food can be digested
Blood is redistributed and sent from the organs (where it is not needed as much) to the working muscles (where it is needed a lot)
This is known as the ‘vascular shunt mechanism’
1. Refers to the diversion of blood from one area of the body to another area.
Can you put the following statements in order to complete the blood shunting process?
Only 15–20% of blood supply goes to the muscles
80–85% supplies the organs
3. At Rest and During Exercise
80–85% of blood supply now goes to the muscles
Less goes to the organs as it is not needed there
Carbohydrates Clarification
Simple carbohydrates: are simple sugars with a chemical structure that is composed of one or two sugars. They are broken down quickly by the body to be used as energy. Simple carbohydrates are found naturally in foods such as fruits and milk.
Complex carbohydrates: consist of a chemical structure that is made up of three or more sugars, which are usually linked together to form a chain. They take a little longer to digest, and they don't raise the sugar levels in the blood as quickly as simple carbohydrates. Commonly found in vegetables and whole grain.
Learning Objectives
To consider the timing of dietary intake when exercising
To understand blood shunting
To recap knowledge of dietary requirements
Your Personal Health and Wellbeing
Success Criteria
To be able to explain the need to consider the timing of dietary intake when performing due to the redistribution of blood flow (blood shunting) during exercise
Starter Activity
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