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Nutrition for Training & Competition Tracy Bostock Head Coach RASCALS Introduction Of all the sciences, nutrition may have more to offer the athlete than any other. Choosing the appropriate foods in suitable amounts and the correct time will not compensate for the lack of ability or training. HOWEVER, there is equally clear evidence that a poor diet will affect an athletes potential. Why do we need to eat? Development and growth Physical activity On average, 15–30% of total energy expenditure is on physical ‘work’. other activities. The exact amount expended will depend on how vigorous the activity is and for how long it is performed. Supply of other nutrients The body needs energy to grow, primarily during childhood and adolescence Tissues are constantly being replaced even if they are not growing, and we need energy to fuel these essential processes. Nutrients, such as vitamins and minerals play a vital role in converting other food sources into energy. They are also essential in helping to keep the body healthy and in good working order, aiding the healing process by enabling damaged tissue to be repaired quickly and effectively. Body function Even when we are at rest we still need a lot of energy. Factors to Consider Training Details Competition Details Type Duration Intensity Frequency Timetable of Training sessions Environmental Issues Duration Intensity Frequency Environmental Conditions Travel Frequency/ Requirements Dietary Guidelines Variety Plenty of Breads and Cereals Low in Fat Balanced with expenditure Limited alcohol Moderate amounts of sugars Low in salt Calcium Iron Portion Sizes Fruits & Vegetables Carbohydrate Rich Foods Size of your palm 5-11 portions Protein Rich Foods 85-125g (tennis ball) Minimum 5 portions Deck of Cards 2-3 portions Healthy Fats/ Essential Oils 2 table spoons 1-3 portions Carbohydrates High intensity exercise relies predominately on glycogen for fuel. When the stores are depleted, your performance suffers. Carbohydrate When digested carbohydrate increases blood sugar levels and provides energy through chemical reactions. When the body is at rest, carbohydrate travels via the blood stream to liver & skeletal muscle where it is stored & used to fuel exercise at a later date. Athletes should maintain a high carbohydrate diet Bread Cereal Fruit Pasta Rice Vegetables Athletes who do not consume enough carbohydrate may suffer from fatigue during training and matches and progressive fatigue over the season Protein Used for growth and repair but as an energy source as a last resort Quantity 2-3 servings a day Aim for 2-3 portions of fish a week Sources Chicken Fish Lean Beef (iron, zinc, B Vitamins) Peanut Butter Canned Beans Tofu Fats Provides the body with energy and is also important in terms of hormone metabolism, tissue structure & for protection Fat Concentrated energy source & reserve Protection & Insulation Provides fat soluble vitamins (A,D,E,K) Provides essential fatty acids Low fat diet can cause malnutrition Saturated Fat Trans Fatty Acids Treated the same as saturated fats Unsaturated & Poly unsaturated Fats <10% Total Fat Animal & Dairy Fats; Raise cholesterol Olive oils, nuts & seeds Can help reduce cholesterol Essential Fatty Acids Cannot be produced by the body Crucial hormone like action as they can regulate numerous body functions. Omega 3 & 6; Pumpkin Seeds, Walnuts, Sardines & Salmon • Increase aerobic energy and metabolism, boost immune system, increase growth hormone and have anti-inflammatory properties. Vitamins & Minerals Prevent clinical deficiency & deterioration in health, growth & reproduction Crucial in facilitating energy release from food (do not produce energy themselves) Vitamins Organic Compounds Fat Soluble (A,D,E,K) Water Soluble (B Complex & C) Many are involved in energy processes or antioxidant roles B Vitamin Group (Glycolysis) C & E prevent muscle damage Minerals Inorganic Compounds Involved in; • Glycolysis • Acid-base equilibrium • Heam synthesis • Muscle contraction Water & Fluids Effect of Fluid Loss on Performance Physical Effect Reduction in muscular strength Perception of effort is increased Fatigue Mental Effects Reduced Concentration Reduction in skill and accuracy Reduction in decision making ability Signs of Dehydration Thirst Headache Nausea/Vomiting Dizziness Irritability Concentrated Urine Unusual Fatigue Loss of Appetite Poor concentration Cramps All this leads to a decrease in performance in both training and competition Drinking Strategies Before Exercise During Exercise Drink 200-500ml of fluid shortly before exercise to reduce the risk of dehydration Try & Drink at regular intervals during training to reduce dehydration After Exercise Fluid replacement should begin immediately after exercise, try to drink 500ml as soon as possible, and try to maintain the 2L of fluid per day as recommended. Tips for Drinking Better Palatable Drink well during warm-up & breaks Practice drinking strategies in training Does not cause stomach discomfort Contains some carbohydrate Contains some sodium Cool Not acidic or gassy Always carried fluid Try to never be thirsty Use your own water bottle Disinfect water bottles regularly Sports Drinks Contains carbohydrates, electrolytes and fluids which help to; Provide Energy Maintain Hydration Replace body salts lost in sweating Sports Drinks re-hydrate the body faster than water alone because; Glucose & electrolytes increase the rate of water absorption from the small intestine Electrolytes present in sports drinks reduce urine output and so help the body to retain more of the absorbed fluid They encourage drinking Making your own sports drink Drink 1 Drink 2 40-80g sucrose 1L water 1-1.5g (1/4 tsp) salt Sugar free squash 200ml fruit squash 800ml water 1-1.5g (1/4 tsp) salt Drink 3 500ml fruit juice 500ml water 1-1.5 (1/4 tsp) salt Fuelling your training & competition Optimum Nutrition & focussed training = Optimum Performance Pre- Event Meal Eat largely for confidence& comfort as well as re-fuelling & re-hydration. Carbohydrate rich meal Low in fat and fibre Its aim; Restore liver glycogen content Ensure hydration Prevent hunger Confidence Pre- Event Meals Plain breakfast cereal & low fat milk Porridge & low fat milk Toast/ Muffins/ Crumpets with honey/ jam Baked beans on toast Spaghetti with low fat bolognaise sauce Jacket Potato & beans Low fat breakfast bar & banana Roll/ Sandwich (low fat fillings) Fresh fruit salad & low fat yoghurts Nutrition after Exercise Priority to replenish glycogen stores ‘Open Window’ Focus on carbohydrate rich foods, high GI 50-100 carbohydrate immediately after exercise & repeat every 2hrs until normal meal patterns are resumed. Small frequent meals may be easier Glyceamic Index High GI Medium GI Low GI White Bread Nutrigrain Bars Cornflakes Wheetabix Potatoes Raisins Banana Honey Sports Drinks Pasta Porridge Crisps White Rice Sweet corn Oranges Orange Juice Chocolate Apples/Pears Cherries Peaches Apple Juice All Bran Baked Beans Yoghurt Milk Peanuts Post Exercise/ Training Nutrition Each of these contain 50g Carbohydrate and athletes should try to ain for 1-2 portions: 800-1L sports drink 800m cordial 2-3 medium pieces of fruit Round of jam/honey sandwiches 3 muesli bars 1 large mars bar 2 cereal bars Baked potato Bowel breakfast cereal and low fat milk Any Questions Please email me: [email protected] Thank you