Nutrition For The Athlete Flashcards
What are the storage reservoirs for dietary carbohydrate?
- Muscle and Liver
- An adult liver can store approximately 100 g of glycogen, and 400 g can be stored in the muscles.
Contrast Basal Metabolic Rate and Resting Metabolic Rates
- Basal Metabolic Rate - Absolute minimal amount of energy required to keep an athlete alive
- Resting Metabolic Rate - A slightly higher energy requirement, needed to maintain the body at rest
Discuss Percentage of Resting Metabolic Rate required for different activity levels
- Sedentary - 120% of RMR (20% more than RMR)
- Light Activity - No exercise, on feet - 130%
- Moderate Activity - Exercise 3 or more days a week for 30 minutes or more - 140%
- Highly Active - Exercise 5 or more days a week for 30 minutes or more - 150%
What are the components of energy expenditure?
- Resting Metabolic Rate - 60-75% of total
- Exercise Thermogenesis - 25-30%
- ——Non Exercise Activity Thermogenesis
- ——Physical Activity Energy Expenditure
- Thermic Effect of Food - 5-10% of total
What is Exercise Thermogenesis?
- Second greatest component of Total Energy Expenditure
- Two subcomponents
- ——-Non Exercise Activity Thermogenesis
- ——-Physical Activity Energy Expenditure
What is Non Exercise Activity Thermogenesis?
- Energy expenditure from maintenance of posture, the activities of daily living, and even fidgeting
What is Physical Activity Energy Expenditure?
- Energy Expenditure from daily training and competition, in addition to recreational or general exercise.
What is Thermic Effect of Food?
- The increase in energy expenditure for the processes of digestion, absorption, and assimilation of macronutrients.
What is the average KCal consumption for male and female athletes?
- Male- 4000-6000
- Female- 1600-3000
What are the bodys three energy systems
- Phosphagen
- Anaerobic
- Aerobic
Carbohydrate is the predominant fuel source at what Percentage of VO2 max?
- 65% and higher
How many amino acids are proteins made up of?
- Approximately 20
What are protein requirements for different athletes?
- Endurance Athlete - Recreational - 1.1-1.3 g/Kg
- Endurance Athlete - Compet. Amatuer - 1.4-1.7
- Endurance Athlete - Professional - 1.7-2.0
- Strength/ Power - 1.4-2.0
- Team Athletes - 1.2-1.6
- Vegetarian Athletes - 1.3-1.8
- Energy Restricted Athletes - 1.5-1.7
What is recommendation for how much protein an athlete should eat per meal?
- 20-40 grams per meal (3 a day)
- 2 Protein Rich Snacks
What vitamins are of concern for Vegetarians/ might they need to supplement?
- Iron
- Zinc
- Vitamin B12
- Vitamin D
- Calcium
What is the minimum amount of fat an athlete should have in their diet?
- 15% of daily intake
- Preferably healthy fats/ not saturated
What are the subgroups of Vitamins and Minerals
- Vitamins - Water Soluble and Fat Soluble
- Minerals - Major and Trace
What are the Major Minerals? How much do you need?
- Need more than 100 mg a day
- Calcium
- Phosphorus
- Magnesium
- Sodium
- Chloride
- Potassium
- Sulfur
What are the Trace Minerals? How much do you need?
- Need less than 100 mg a day
- Iron
- Zinc
- Chromium
- Fluoride
- Copper
- Manganese
- Iodine
- Molybdenum
- Selenium
What are the roles and sources of Thiamin (B1)
- Energy Metabolism, Nervous System Function
- Whole grains, pork, legumes, Wheat Germ, Seeds, Nuts
What are the roles and sources of Riboflavin (B2)
- Energy Metabolism, Vision, Skin Health
- Milk, yogurt, bread, cereal, mushrooms, cottage cheese, eggs
What are the roles and sources of Niacin (B3)
- Energy Metabolism, Healthy Skin, Nervous System, GI Tract
- Beef, Poultry, Fish, Legumes, Liver, seafood, whole grains, mushrooms
What are the roles and sources of Vitamin B6
- Amino Acid and Fatty Acid Metabolism, Red and White blood cell synthesis, conversion to Niacin, Neurotransmitter Formation
- Beef, Poultry, fish, eggs, whole grains, brown rice, wheat germ, white potatoes, starchy vegetables, bananas
What are the roles and sources of Folate
- DNA Synthesis, Cell division, Fetal Development, red blood cell maturation, tissue repair
- Fortified breakfast cereals, spinach, great Northern beans, Asparagus
What are the roles and sources of Vitamin B12
- Tissue growth and development, CNS and CV Systems, Nerve cell protection, DNA Synthesis
- Meats, Dairy, Eggs
What are the roles and sources of Biotin
- DNA Synthesis, Energy Metabolism
- Legumes, Cheese, Egg Yolks, Nuts Vegetables
What are the roles and sources of Pantothenic Acid
- Energy Metabolism
- Beef, Poultry, Fish, Whole Grains, Dairy, Legumes, Potatoes, Oats
What are the roles and sources of Choline
- Acetylcholine Formation
- Egg yolks, liver, nuts, milk, Wheat Germ, cauliflower, Soybeans
What are the roles and sources of Vitamin C
- Antioxidant, Collagen Formation, Immune system health, Iron Absorption Enhancement
- Citrus fruits and Juice, Tomatoes and Juice, Potatoes, Green Peppers, Kiwi, Cabbage
What are the roles and sources of Vitamin A
- Vision, Stem Cell Differentiation, Immune Function, Tissue repair, bone formation, reproductive health, antioxidant
- Liver, Fish Liver Oils, Egg Yolks
What are the roles and sources of Vitamin E
- Antioxidant, Protect Skin, Connective tissue and cell membranes
- Plant Oils
What are the roles and sources of Vitamin D
- Control Calcium levels in blood, Promote bone and teeth formation
- Fish Oils, Salmon, Sardines, Herring, Egg Yolks, Liver
What are the roles and sources of Vitamin K
- Blood Clotting, Bone Health
- Spinach, Broccoli
What are the roles and sources of Calcium
- Bone Health, Blood Clotting, Nerve transmission, muscle contraction, disease prevention and weight management
- Milk, yogurt, cheese, cottage cheese, green leafy vegetables
What are the roles and sources of Phosphorous
- Bone and teeth rigidity, part of cell membrane and ATP, contributes to energy metabolism
- Meat, fish, eggs, dairy, soft drinks, nuts, legumes, cereals
What are the roles and sources of Magnesium
- Enzymatic reactions, bone health, blood clotting, muscle cramp prevention
- Whole grains, green leafy vegetables, Legumes, nuts, seafood
What are the roles and sources of Sodium
- Blood pressure maintenance, nerve impulse transmission, muscle contraction, glucose absorption, electrolytes
- Table salt, soy sauce, condiments, canned processed foods, Smoked meats, salted snacks, soups
What are the roles and sources of Chloride
- Aid to kill harmful bacteria in stomach and throughout body, Nerve Transmission
- Salt, Fruits, Vegetables
What are the roles and sources of Potassium
- Blood pressure regulation, fluid balance with exercise, counteracts sodium in BP
- Potatoes, Spinach, Bananas, meat, milk, coffee, tea
What are the roles and sources of Sulfur
- Synthesis of body compounds, tissue growth and development
- Fruits, soy flour, bread, sausage, juice, beer, wine, cider, water
What are the roles and sources of Iron
- Oxygen transport and utilization, immune function, brain development, energy production
- Beef, poultry, fish, soy products, dried fruits legumes, whole grains, fortified cereals
What are the roles and sources of Zinc
- Wound healing, RNA and DNA Synthesis, Tissue growth and maintenance, hormone production, protein synthesis, GI and reproductive systems function, brain function
- Beef and other dark meats, Fish, eggs, whole grains, wheat germ, legumes, dairy,
What are the roles and sources of Chromium
- Enhance insulin action, Increase insulin receptors, Improve type II diabetes
- Mushrooms, prunes, nuts, whole grains, broccoli, wine, cheese, egg yolks
What are the roles and sources of Fluoride
- Mineralization, strength of bones and teeth
- Water, Teas, Seafood
What are the roles and sources of Copper
- Iron metabolism, Antioxidant enzyme, electron transport chain
- Organ meat, seafood, nuts, seeds, wheat bran, cereal, whole grain, cocoa
What are the roles and sources of Manganese
- Activates enzymes, energy metabolism, Fat synthesis
- Whole grains, legumes, green leafy vegetables, tea, fruit
What are the roles and sources of Iodine
- Hormone Synthesis
- Iodized salt, seafood, dairy, grains, cereals
What are the roles and sources of Molybdenum
- Co factor for enzymes, Antioxidant detoxification, amino acid metabolism
- Cereals, whole grains, legumes
What are the roles and sources of Selenium
- Antioxidant, Immune Function
- Animal products, seafood
What is the Estimated Average Requirements of a vitamin or mineral?
- The daily intake value of a nutrient that is estimated to meet the nutrient requirement of half the healthy individuals in a life stage and gender group.
What is the Recommended Dietary Allowances of a vitamin or mineral?
- The average daily intake level that is sufficient to meet the nutrient requirement of nearly all (97 to 98 percent) healthy individuals in a particular life stage and gender group,
What is the Adequate Intake of a vitamin or mineral?
- Used when no RDA has been established, but the amount established is somewhat less firmly believed to be adequate for everyone in the demographic group.
What is the Tolerable Upper Intake of a vitamin or mineral?
- used to caution against excessive intake of nutrients that can be harmful in large amounts.
What is the recommended macronutrient intake for athletes (percentages in general?)
- 45-65 percent carbohydrates
- 20-35 percent fats
- 10- 35 percent proteins
What is the female athlete triad?
- Disordered eating
- Amenorrhea
- Osteoporosis
What are some early signs or factors that put females at risk for developing the female athlete triad?
- restrictive dietary intake habits
- vegetarianism,
- dietary insufficiency
- prolonged exercise
- low bone mineral density
- history of menstrual disturbances
- late menarche
- genetic predisposition
- training errors
What are the primary minerals found to be lacking in the female athletes diet?
- calcium
- iron
- zinc
- vitamin D
- B vitamins
- magnesium
What is the NATA guidance on water or fluid intake?
- 16 ounces of fluid two hours prior to exercise. -
- During exercise: 5-10 ounces of fluid every 15-20 minutes or 20-40 ounces every hour
- Following exercise: 16 ounces of water for every pound of body weight lost 24-hours
In what case would a sports drink be preferred over water?
- 60 min of exercise or less….Water
- 90 min or more….sports drink
Below what body fat percentage can performance suffer for males and females?
- 5% (<55yo), 7% (>55yo)…men
- 16% (<55yo), 20% (>55yo)…..women
When cutting weight for competition, how much weight loss does it take before negative effects are seen?
- 1-2% can negatively impact physiological function and body composition, including decreased lean mass as well as muscle and liver glycogen stores.
What is the recommended number of calories to restrict an athlete for weight loss?
- 300-500 daily
What should an athletes plate generally look like (food on it)?
- 2/3 nutrient dense, carbohydrate rich foods
- 1/3 Protein rich foods
What percentage of the endurance athletes diet should be carbohydrate?
- 55-65%
How much carbohydrate should the endurance athlete ingest after exercise?
- .5 grams per pound of body weight within 15-30 min post exercise
What are key vitamins and minerals for endurance athletes?
- Thiamine, riboflavin, and niacin for energy production;
- Vitamins C and E for their antioxidant properties
- Iron, calcium, sodium and potassium for oxygen carrying ability, bone strength, and to replace electrolytes
What percentage of total intake should carbohydrate make up for a strength/ power athlete?
- 55-60%
What are key vitamins and minerals for the strength and power athlete?
- Calcium for muscle contractility, bone health, and nerve conduction
- Chromium for insulin-regulated metabolism of carbs, fats, and proteins
- Iron for replenishment of that used during high intensity weight-bearing exercise
- Magnesium and zinc for muscle contraction, growth and development.
What percentage of total intake should carbohydrate make up for a team sport athlete?
- 55-65%
What are some ergogenic aids used as anabolic precursors?
- creatine monohydrate
- betahydroxybetamethylbutyrate
- boron
What are some ergogenic aids use to reduce fat or appetite?
- L- Carnitine
- Chitosan
- Chromium
- Ephedrine
What are some ergogenic aids used as anti-catabolic agents?
- Glutamine
- Leucine
- Whey protein
- Casein protein
- Alpha-ketoglutarate
Which macronutrient(s) typically slow down gastric emptying?
- Fat and Protein
- So high carb meals just before activity may be preferred for a number of reasons
For the average athlete, what amount of carbohydrate should be consumed after exercise?
- 1.0 - 1.5 g/kg immediately following exercise
- An additional 1.0 -1.5 g/kg every two hours thereafter.
What type of Protein supplement can provide both immediate and prolonged protein synthesis?
- Combination of Whey and Casein