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What is eaten before competition has four main functions: Prevent hypoglycemia Settle the stomach Absorb gastric juices Decrease hunger Fuel muscles Glycogen stores Glycogen present Pacify the mind Why are pregame meals important? What should we eat? What should we avoid? Sports nutrition benefits begin days in advance. Every day Eat adequate highcarbohydrate meals Fuels and refuels your muscles Food eaten within an hour before exercise Reduces hunger Maintains blood sugar Doesn’t significantly replenish muscle glycogen stores Exercising 60-90 minutes eat Complex carbohydrates Slowly enter the bloodstream as they are digested (low glycemic index) Rice, pasta, yogurt, oatmeal, bean soup, lentils, apples, or bananas When eaten an hour before exercise Digested enough to be burned for fuel Provide sustained energy during the long workout Less than an hour snack on foods that Digest easily Settle comfortably High-carb, low-fat choices Bread, english muffins, bagels, crackers, and pasta Limit high-fat proteins Cheese, milk, steak, hamburgers, and peanut butter Take longer to empty from the stomach Results in Sluggishness Nausea Be cautious of Sugary foods (such as soft drinks, jelly beans, and even lots of maple syrup or sports drinks) Carbohydrates which quickly enter the bloodstream as they are digested (potatoes, honey, or corn flakes) May cause Drop in blood sugar Tiredness, lightheadedness, and fatigued Experiment and learn how your body responds High calorie meals take longer to leave the stomach than do lighter snacks Allow Adequate food digestion time 3-4 hours to digest a large meal 2-3 hours for a smaller meal 1-2 hours for a blended or liquid meals Less than an hour for a small snack Learned how to best fuel your bodies Some athletes eat before exercise Others abstain until after exercise Exercise increases blood flow to muscles Decreases blood flow to digestive organs Stomach irritation Eat familiar foods before a competition Don’t try anything new! Carries risk of settling poorly Intestinal discomfort, acid stomach, heartburn, or cramps Drink plenty of fluids Why are we told to carbo-load? Who should use carbo-loading? What benefits do we receive? What are the drawbacks? Store maximum amount of glycogen prior to an event “Super-compensate” for glycogen depletion Endurance athletes with events longer than 90 continuous minutes Examples: Long-distance runners, swimmers, bicyclists, and cross-country skiers Other athletes that benefit Involved in prolonged movement sports with varying intensities: Examples: Soccer, lacrosse, ice hockey, and tennis 3 days of high intensity training Deplete glycogen stores 5g/kg/day of carbs Minimum amount recommended The first day 90 minutes of intense training (at 70% of VO2max) Followed 2 days 40 minutes of intense training Taper intensity over the next 3 days Increase to 10g/kg/day of carbs Followed by 1 day of rest Weight should increase 1-3 pounds Water is stored with glycogen May feel sluggish and heavy Eating too many carbohydrates can lead to intestinal distress Choose wholesome, fiberrich carbohydrates Keeps system running smoothly Pasta, rice, bran muffins, whole wheat bread, bran cereal, fruits, and vegetables are good choices. What should we eat after the game? What will help our muscles recover? What you eat after does affect your recovery Foods eaten after require the same careful selections as before exercise 2 or more workouts per day must be concerned about recovery diet such as: Competitive swimmers Triathletes Aerobics instructors Basketball players Football players at training camp Athletes have reasons to not eat after exercise Don’t feel hungry Don’t have time Recommendation is 1.5g/kg body weight Mr. Young Muscle glycogen replaced better with smaller frequent meals Easily achieved with a banana, 10oz of sports drink, and a bagel Larger meals Blood glucose and insulin rise rapidly Return to baseline quickly Blood glucose levels sustained for a longer periods of time with smaller meals Research indicates 2 hours for carbohydrate reloading .75 to 1.5g/kg consumed each of the next 3 hours Ideally, consume within 15 minutes after workout Enzymes that make glycogen are most active Most rapidly replace depleted glycogen stores Liquids and solid foods will refuel muscles equally well. Liquids should contain glucose rather than fructose Fructose does not result in glycogen synthesis rates as high as those with glucose Solid foods should have a high glycemic index These are most effective in enhancing the resynthesis of glycogen Ex: white bread, corn flakes, baked potatoes, white rice, pancakes, bagels Many “energy bars” have a high glycemic index Protein intake after exercise is important for muscle anabolism Recommendation is 6g immediately after exercise .1g/kg body weight Good examples of proteins are: Yogurt with fruit in the bottom Chocolate milk Turkey sandwich Some protein can actually enhance glycogen replacement in the initial hours after hard exercise. Protein eaten along with carbohydrates is recommended Sweating not only causes water lose but also some minerals (electrolytes) such as potassium and sodium that help the body function normally. Electrolyte losses are primarily responsible for muscle cramping and intolerance to heat. Most athletes should be able to consume more than enough electrolytes from standard post-exercise foods. Salt tablets or special supplements are rarely needed