| Nutrition |
FLYING KUKRIS GUIDE TO COLTS NUTRITION
Adopted principally from the excellent HKRFU guide with additional source material from Harvard School of Public Health, World Health Organisation, Texas State Univ, American College of Sports Medicine, National Institute of Public Health Czech Republic, Anita Bean, various health magazines such as Shape.
Nutrition is an important component of rugby training. What you eat and drink everyday has a big impact on your training, and obviously your training has a big impact on your performance.
Game day is not the time to start paying attention to what you eat. If you compare the time you spend training to the time you spend playing you will soon see why it is so important to get your training diet right. Eating the right type of foods in the right amounts will give you more energy to train harder and perform better. Sweets, Coke, 7Up, etc form no part of your diet. Three types of food provide energy: carbohydrates, protein and fat.
CARBOHYDRATES
Carbohydrates are the major source of fuel, especially for athletes. Sports nutritionists recommend that carbohydrates such as breads, cereals, fruit, vegetables and beans make up more than half of our total energy intake.
Carbohydrates are stored in the body as glycogen in the muscles and liver. Glycogen is the main source of energy for the muscles to perform during exercise. The body can only store a limited amount of glycogen, so it’s essential to eat carbohydrates every day.
The amount of carbohydrates your body needs depends on your body weight and your level of training. It is recommended that athletes that participate in moderate to high intensity exercise for 60-120 minutes need to consume approximately 6-8 grams of carbohydrate per kilogram of body weight each day.
What are good sources of carbohydrate?
What does 20g of carbohydrate look like?
Protein is essential for the growth and repair of all body tissues including muscle and bone. Protein also has a role in providing energy if glycogen stores are low, but when protein is used in this way it cannot then contribute to the important areas of muscle growth, repair and recovery.
Athlete’s protein requirements of athletes are greater; however increased requirements can usually be met through increased food intake as a result of a greater appetite. Adolescent athletes require approximately 2 grams of protein per kilogram of body weight each day; that means you are probably targeting 20-60 grams of protein a day.
While both animal and vegetable proteins probably have the same impact on health, not all proteins are the same. A 6 ounce steak might give you 38g of protein but it also delivers 44g of fat with a scary 16g of saturated fat. Yet the same amount of salmon gives you slightly less protein at 34g while delivering 18g of fat with only 4g saturated. Lentils deliver around 18g of protein for only 1g of fat which is why legumes, although delivering some carbs, are in this section.
You may expect that post exercise/match, you need a big carb upload to recover the energy but you need protein too so that the combo speeds glycogen recovery faster than eating carbohydrate alone. They found that adding a little protein to post-workout carbs boosted glycogen storage by almost 40%. It also promoted faster muscle repair and growth in weight trainers. The combination of protein and carbs (1g to every 3g carbs) stimulates insulin release, which prompts the muscle cells to take up glucose (carbohydrate) and amino acids (the building blocks of protein) faster from the bloodstream.
The benefits of soy as a method of reducing cholesterol may have been overstated previously but soy remains a good choice as it often replaces less healthy red meat choices.
What are good sources of protein?
What does 15g of protein look like?
FIBRE
Fibre in food slows the digestion of the food so giving you a sense of feeling full long; this is beneficial in the morning for breakfast when you have a long morning of school ahead but would be a disadvantage before a match when you don’t want the sense of a heavy stomach. To increase you fibre intake, switch from white pasta/rice to wholemeal/brown versions. Eat whole fruit instead of drinking fruit juices. Choose whole grain cereals rather than Coco-Pops for breakfast. Add more legumes to your meals (and get more protein too).
What are good sources of fibre?
What does 5g of fibre look like?
FAT
Dietary fat has important roles in the body including insulation from the cold and aiding in the absorption and transportation of fat-soluble vitamins.
Fat has over twice the energy value of carbohydrates or protein. It is a concentrated form of energy so it is easy to eat more than you need. This leads to increase levels of body fat, heart disease and other health problems.
You can reduce your intake of saturated fat by choosing low fat dairy products, lean red meat, skinless chicken, fish and plant oils. Low fat is the key. In general we need 1 gram of fat per kilogram of body weight (up to 90 grams) per day.
How much fat is there in fast food?
EXAMPLE MEAL PLAN
The is a sample eating plan with enough carbohydrate and protein portions suitable for a 60kg rugby player training at least an hour per day. BREAKFAST – 7am2 slices toast with 2 Tbsp jam 1 glass fruit juice 1 glass water
SNACK – 10.30am1 muffin (low-fat) 1 apple 1 glass water
LUNCH – 12noon2 salad sandwiches with cold meat 1 apple 200 ml flavoured reduced-fat milk 1 glass water
SNACK – 3pm (pre-training)1 sandwich with honey 1 glass water
SNACK – 6pm (after training) 1 banana 1 cereal bar 300ml sports drink
DINNER – 7.30pm 100g lean red meat 1cup steamed rice Stir-fried vegetables, eg broccoli, capsicum, beans, carrots 1 glass water
SUPPER200 ml milk-based smoothie
Note: ensure you incorporate variety into your diet to ensure you are receiving a wide range of vitamins and minerals.
FLUID
Maintaining an adequate fluid intake is essential in any healthy diet and is particularly important for athletes. Water prevents dehydration, which can impair performance and helps keep the body cool while exercising.
The view that sodium (salt) loss was critical during intense exercise has been replaced by the understanding that exercise in hot and humid conditions causes an increase in plasma sodium concentration, implying that water replacement may be more important than sodium replacement during exertional heat stress.
Various urban myths circulate regarding the dangers of drinking demineralised water have been overstated. Recent research suggests that long term drinking of demineralised water may be harmful since the water lacks critical minerals such as calcium, magnesium and other trace elements. There are currently no indicated short term concerns, so drinking a bottle of green Watson’s water is better than not drinking but drinking a bottle of mineral water would be better.
Thirst is not a good indicator that you need fluid – by the time you get thirsty you have already started to become dehydrated. A fluid loss of 2% body weight can impair performance by up to 20%. Therefore it is important to drink before you feel thirsty.
COMPETITION NUTRITION
The two most critical factors in competition nutrition are fuel and fluids. Carbohydrates are the critical source of fuel to the working muscles and central nervous system. Therefore carbohydrate store must be maximized prior to a game, topped up throughout and replenished post match for optimal performance. Fluids are also vital as they prevent dehydration and help keep the body cool during exercise.
The following is an example of what and when you should eat on game day. It is highly recommended that you trial your ‘new’ diet plan during training before you implement it on game day. Don’t experiment on the day of your ‘big game’. EXAMPLE MATCH DAY MEAL PLAN
BreakfastMorning of the game: (Large, high Carbohydrate (low fat) meal)
Pre-match Meal4 hours out from game: (Medium, high Carbohydrate (low fat) meal) Examples:
Pre-match Snack1-2 hours out from game: (Light, high carbohydrate, low fat snack). Examples:
Half-time SnackExamples:
Post-Match RecoveryExamples: Within 30min after game: (High carbohydrate snacks)
Within 2 hours after game:(High carbohydrate/protein meal)
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