sports nutrition. is based upon…… the basic principles that govern general nutrition that is, a...
TRANSCRIPT
IS BASED UPON……IS BASED UPON……
The basic principles that govern general nutrition
That is, a balance of all nutrients, a variety of food and moderation of the intake of that food.
With that in mind, the importance of the training diet has been recognised.
THE TRAINING DIET..THE TRAINING DIET..
Athletes now understand that they must eat well to ensure maximum return from heavy training schedules.
The competition diet is established providing athletes with knowledge of special eating practices, before, during and after the event to maximise their performance.
Each sports person will have different dietary requirements depending on…
Training Age Sex Body size Sport played Environment for training and competition
GENERAL PRINCIPLESGENERAL PRINCIPLESOF SPORTS NUTRITIONOF SPORTS NUTRITION
Recommended balanced diet for average sports person is….
55 – 60% Carbohydrates 25 – 30% Fats 10 – 15% Protein
Recommended balanced diet for more strenuous athlete is…
70% carbohydrates 15 – 20% Fats 10 – 15% Protein
GUIDELINES FOR A SPORTS GUIDELINES FOR A SPORTS PERSON DIETPERSON DIET
1. Increase complex carbohydrates
2. Decrease dietary fat
3. Ensure adequate protein intake
4. Increase dietary fibre
5. Decrease/eliminate alcohol
6. Decrease salt intake
7. Increase water intake
COMPETITION DIETCOMPETITION DIET
It is important to understand nutritionally related factors that cause fatigue & reduced performance.
These being : - depletion of muscle stores & dehydration
STRATEGIES TO REDUCE, DELAY OR OFFSET STRATEGIES TO REDUCE, DELAY OR OFFSET THESE FACTORSTHESE FACTORS
General preparation of energy stores(increase carbohydrate intake to ensure natural storage
capacity) Carbohydrate loading for endurance events(gradually reduce training early in the week, maintain
normal diet to maintain carb levels – reduce training further and consume high level of carbohydrates
80 – 85% of kj intake) Pre-competition meal(ensure that glycogen stores are topped up for strenuous
exercise, adequate hydration)
STRATEGIES CONT..STRATEGIES CONT..
Carbohydrate supplementation (marathons)(generally in fluid form in small amounts and frequent
intervals – this maintains blood glucose levels and spares muscle glycogen)
Glycogen replenishment(first 15 min after exercise eat foods high in glycogen eg
fresh fruit, lollies…..Following two hours meal high in complex carbs &
protein Fluid replenishmentBefore, during and after
CARBOHYDRATES
STARCH SUGARS
BREADS, CEREALS, RICE, PASTA AND POTATO
TABLE SUGAR, HONEY, FRUIT SUGAR, LOLLIES, SOFT DRINK AND BEER
CARBOHYDRATES
COMPLEX
(contain other useful nutrients)
Preferred option for carb intake due to being an efficient energy source, readily used.
Stores depleted quickly so need to be replaced frequently
SIMPLE
Carbohydrates stored as GLYCOGEN in the muscles and liver.
Muscles cannot perform without it. Therefore need to be replenished
QUESTIONS….QUESTIONS….
1. What factors affect the dietary requirements of a sports person?
2. What is the difference between the average athletes intake of carbs, protein & fat and that of an athlete of strenuous activity?
3. List the guidelines for a sportsperson’s diet?4. Explain the role of the pre competition meal
and carbohydrate loading?5. List some main sources of complex
carbohydrates.
Sources Function Sports of primary use
CHO Breads, cereals, rice, pasta, fruit & vegetables
The bodies main source of energy to carry out every-day activities
Team Sports (football, netball etc)
Protein Beef, lamb, fish, chicken, eggs
Builds and repairs all body cells
Marathon (Long in duration)
Fats Animal Products – meat, chicken etc (saturated)
Plants – Avocado (unsaturated)
Supply essential fatty acids that form membrane of cells. Vital in hormone production
Walking, mowing lawns
Secondary energy source when CHO’s are used
Water Straight from a tap/bottle, fruits (oranges, pears)
Transport other nutrients, cells, hormones & wastes around the body
All