PERFORMANCE NUTRITION Are You Ready? Jorie Janzen, RD IOC Dipl Sport Nutr (in progress) SMCM, CSCM, CDM, DC Objectives Gain/update knowledge of sports nutrition tools and resources Keep up-to-date on current evidenced based sport nutrition resources Develop/strengthen skills in nutrition and make practical recommendations for athletes and active people ATHLETES WANT TO KNOW… Training diets Fluid schedule Pre, during & post-competition nutrition Meal timing & spacing Eating “on the go” Menu planning strategies Injury prevention LBM gain/fat loss Dietary supplements/Ergogenic aids Reliable nutrition resources OUTLINE Energy Systems (very brief overview) Training & Nutrition related Performance Goals Assessing Energy Needs Macro & Micronutrient Needs Training Diet Fluids & Hydration Dietary Supplements and Ergogenic Aids Case Study Q&A Energy Systems How energy is stored & transferred for Physical Movement Diet, genetics/physique, physical conditioning, type/duration & intensity of exercise determine energy system used Phosphagen (ATP & CP) System (up to 6 seconds) Anaerobic Glycolysis (Lactic Acid System) (up to 1 – 3 minutes) Aerobic System (Kreb’s Cycle & electron transport…) WHY DO ATHLETES TRAIN? Improve FITNESS ATHLETIC PERFORMANCE maybe HEALTH Become more efficient with: Restoring ATP-CP faster Storing more energy/glycogen Overall aerobic fitness (cardiovascular) WHY ATHLETES FATIGUE? Lactic Acid high concentration of H+ build up Hypoglycemia Low energy availability, blood sugar drops Depleted Muscle Glycogen Peripheral fatigue eat at 6pm, go to bed early, get up for early run but can’t train Dehydration Decreased cardiac output, heat tolerance, increased glycogenolysis Anemia Not enough oxygen to get to the working tissue PRINCIPLES OF TRAINING You Know This… F.I.T.T. training variables Frequency Intensity Time Type Overload – change one or more FITT variables to continue to improve fitness and performance Periodization – 1 year planned training program divided into phases or cycles to work on specific fitness/performance goals TYPES OF SPORTS Strength & Power Tennis, Soccer, Gymnastics, Volleyball, Speed Skating, Weight Lifting, Boxing, Martial Arts, Rowing, Figure Skating, Dance (ballet), Hockey, Track & Field Endurance Cross Country Skiing, Marathon, Triathlon, Distance Swimming, Adventure Sports, Weekend Tournaments (vball, basketball, hockey), Stop & Go Sports over time, Long hours of training (all sports), Training >20-30 hours/week Judged Sports Gymnastics, Sync Swimming, Jockey The type of training determines nutritional needs along with the type of sport. NUTRITION PLAN DEPENDS ON TRAINING & GOALS Training routine Competition routine Limiting factors long drive, food avoidance, food availability Personal goals Medical concerns Therapeutic nutrition concerns – celiac, DM Lifestyle student, who they live with, budget ENERGY BALANCE Energy Input = Energy Output (dietary intake) (physical activity) E In > E Out = + E Balance (wt gain) E In < E Out = - E Balance (wt loss) But, not always this simple. ENERGY AVAILABILITY The amount of energy available to the body to perform all other functions after exercise training is subtracted. If Negative Energy Balance occurs & persists… Weight loss Muscle loss Fatigue Poor performance Female Athlete Triad risk Female Athlete Triad Disordered Eating Amenorrhea Low bone mineral density Osteoporosis risk Low energy intake compared to expenditure Case Study: Female Athlete Triad 16 y.o. female rhythmic gymnast Struggles with weight and body image Wants to lose 10 lbs in 6 weeks Resembles both parents body types; carries more weight on body Coach recently suggested juice fast Although she agreed to follow more sensible diet, her “inner voice” tells her she must get thinner… purging and low self-esteem Case Study: Female Athlete Triad Age: 16 Ht: 5’ 5” Wt: 115 lbs (52.2 kg) Frame: small BMI: 19 Personal goal: 105 lbs Suggested: 112-115 lbs Menarche: 15 yr Menses: <3x/yr Diet Hx: No Red Meat, Low Carb, Low Fat, and recently purging daily Training: >30 hr/wk Injuries: knee surgery, stress fractures (foot; spine) Family hx: both parents endomorphic Case Study: Female Athlete Triad Typical Training Day Breakfast: 1 mango, ½ cup blueberries, ¾ cup LF vanilla yogurt, 4 Wasa crackers, 1 T peanut butter Lunch: 3 oz tuna, 1 cup salad, ½ cup melon cubes Post Exercise: 590 ml sport drink Supper: 2 cups spaghetti & meat sauce, 1 cup skim milk, ¾ mixed veggies Intake: 1390 kcal Recommended: 2100 kcal NEGATIVE ENERGY BALANCE: -710 kcal BODY COMPOSITION & BODY WEIGHT Athletic performance can NOT be predicted by these two factors only Body weight can influence speed, power, & endurance Weight class sports, runners, speed skating, wrestling, boxing, light weight rowing sailing Body composition can influence strength, agility, & appearance Gymnastics, figure skating, ballet/dance, volleyball, martial arts… Recommended Number of Food Guide Servings Per Day Food Group Vegetables & Fruit General Guidelines Athletes Endurance Sports 7-10 8-14+ 15+ 6-8 8-14+ 15+ 2-4 3-4 4-6 2-3 2-3 3-4 CARBOHYDRATE Grain Products CARBOHYDRATE Milk & Alternatives CARBOHYDRATE & PROTEIN Meat & Alternatives PROTEIN, CARBOHYDRATE? Carbohydrate… the prime fuel for Energy Brain Muscle Blood sugar Muscle glycogen stores If low, may feel dizzy, light headed, fatigued, muscle feels heavy, decreased performance, poor recovery, higher risk for injury, especially if overtraining. How Much Do Athletes Need? g/kg BW not % 5 g/kg BW is minimum CHO for replacing muscle glycogen stores (5-10g/kg BW range) LOW CARB DIETS… Lose water & muscle (if low kcal) Dehydration fatigue Set-up to crave & binge Rotten apple breath (ketones) Constipation (low fibre) Lack of B vitamins (energy co-factors) Deficiency in key nutrients (Fe, Ca) Mood swings, depression, low libido May slow down RMR (wt gain) Weight quickly regained after diet (increase body fat) Weight loss after 1 yr same as traditional weight-loss diets NOT RECOMMENDED FOR ATHLETES CARBS: What Kind? Whole Grains Legumes Vegetables & Fruit Milk/Alt Less refined starch & sugar More Fibre means slow releasing energy from complex carbohydrates Restore Muscle Glycogen CHO for Immediate Recovery: 1.0 – 1.5 g CHO/kg BW 15-30 minutes post game or following intense training. Follow every 2 hours for up to 4-6 hours 84 kg (185 lbs) x 1.0 – 1.5 = 84-126 g CHO Sport drink (6%) 5 ½ cups (1400 ml) = 84 g 500 ml chocolate milk + 12” sub = 120 g Recovery CHO… 50 grams Large banana + 250 ml choc milk 1 cup applesauce 750 ml Gatorade 1 cup spaghetti + ½ c tomato sauce 500 ml choc milk 1% 100 grams Peanut butter sandwich + 250 ml choc milk, banana 1.5 L Gatorade/Powerade Frozen fruit smoothie (750 ml) + 1 high CHO energy bar 4 oatmeal cookies + 500 ml choc milk 1% Dietary Protein Role Growth, maintenance, & repair of tissues, antibodies, hormones, enzymes, RBCs, WBC etc. Training ---- Net pro synthesis Training ---- Stimulus to build muscle How Much? Sports diet: 15-20% (total E) AMDR: 10-35% (total E) RDA: 0.8 g/kg BW per day Athlete Recommendations Endurance 1.2-1.4 Power/Strength 1.0-1.7 Avg. Range 1.2-1.7 Do Athletes Need More Protein? 0.8 g/kg/d 1.7g/kg/d RDA Adults 1-1.2g/kg/d Fitness/youth 1.2-1.4g/kg/d Endurance 1.0Strength North American diet easily provides: 1.4 to 2.0 g/kg/d Can Athletes Protein Intake Be Met Through Diet Alone? 1.7 g/kg/day for 65 kg soccer athlete beginning of training season 1.7 x 60 = 110 g protein/day Training Diet: Breakfast Snack 1 Lunch Snack 2 Supper Snack 3 2 eggs, 3 toast, 250 ml juice (22 g) 750 ml sport drink, banana (1 g) 12” lean meat sub, 500 ml choc milk, 1 apple (38 g) Shake: 500 ml milk, 125 ml yogurt, 125 ml fruit (24 g) 7oz (120g) chicken, L potato, 250 ml veggies, 1 roll, salad (70 g) 500 ml cereal, 375 ml milk (21 g) TOTAL: 177 g protein = 2.72 g/kg/d LOW vs HIGH PROTEIN DIETS Low Pro Diet Usually low calorie Risk for decrease LBM Amenorrhea micronutrieint deficiency (Fe, Zn…) Increased risk tendonitis & overuse injuries, delayed healing High Pro Diet Limit CHO intake Fatigue Poor performance Inadequate recovery Risk for dehydration Low fibre Used for weight loss, increase LBM, ultraendurance training Gain Lean Body Mass RMR x AF + (500 - 1000) kcal Regular resistance training Rest days – sufficient “quality” sleep hours Eat 6-8 times daily24/7, even days off Balance of CHO (5-10g/kg), Pro (1.2-1.7g/kg), healthy fats (1-2g+/kg) Energy dense foods Limit appetite fillers Accountability – food records, see sport RD Supplements are not a short cut Check for disordered eating, body image/weight issues Vegetarian Athlete May be low in Energy, EFAs, Ca, Fe, Zn, vit B2, B12, D Monitor Body wt/composition changes Menstrual hx/amenorrhea (risk bone #) Protein quantity & quality 1.3-1.8 g/kg Iron status (CBC, S-ferritin), increased risk in periods of rapid growth Iron deficiency anemia decreases performance Educate Cooking, Shopping, Recipes/Menu Planning, Travel Protein Supplements Whey (BCAA + cysteine) Isolate – 90% availability, high quality Concentrate – lower quality egg albumin, casein, milk solids, soy milk protein, hemp etc. Convenience, Portable, Calories Most lack CHO & Micronutrients (Fe) ? Safety <18 yrs Risk banned substance Pros Cons Protein Supplements Not More Effective Than Dietary Protein Dietary Fats Role E source; EFAs, transport fat-soluble vitamins; protect organs; cell membranes; help produce hormones; insulate nerve fibres How Much Sports diet: 20-30% AMDR: 20-35% total E Athletes: ~1-1.5g/kg/d Min. 6 fats per day Dietary Guidelines 10% Saturated, 10% PUFA, 10% MUFA EFAs – omega 3: 0.6-1.2% total E omega 6: 5-10% of total E Pros & Cons of Fat… Inadequate Risk for amenorrhea Red flag for disordered eating/ED Low body fat: lack organ protection Poor transport fat soluble vit (A,D,E,K) Inadequate EFA Lack satiety Excessive Compromise CHO & Pro intake GI upset Lethargy Risk: CVD, CA Unhealthy fats Increase body fat Omega 3 Supplement??? Fish Oil Supplement 1 gel cap = 150 mg EPA = 100 mg DHA = 250 mg 2 gel caps/day = 500 mg = 0.5 g Real Food 6 oz salmon = 1.9 g 4 x more omega 3 Choose fish 2-3 times per week Salmon, mackerel, sardines, swordfish, tuna, rainbow trout, omega 3 eggs. Also fortified milk, yogurt, cheese, energy bars Other Nutrients to Monitor in Athletes… B Complex Vitamins Enriched whole grains, green leafy veg, high quality animal protein sources Iron Supplementation may be required (stages of iron deficiency) Heme vs non-heme Antioxidants Vit C, B-carotene, Vit E, Se Increase veg/fruit and whole grains Suppl not supported by scientific literature Training & Competition Diets Before During After BEFORE Goals Prevent low BG Increase glygogen levels Prevent hunger Hydrate Consider Timing of meal before exercise Intensity, duration, type exercise Training or competition Minimize GI distress Everyone will tolerate different types and amounts of foods/fluids before training and competition. BEFORE CHO Loading Supersaturate glycogen stores Current Method 3 days prior consume 7-10 g/kg/d Endurance/Ultraendurance sports Marathons, Triathlon/ironman, adventure Long distance sports, Tour de France You don’t need to deplete with exhaustive exercise and or CHO restriction… old method. BEFORE Night Before Events Familiar foods Ample time to digest Top up bedtime snack Day of Events Fluids: 5-7 ml/kg 4 hrs prior Meal before: +500 ml fluids Large meal; 2-4 g CHO/kg, 2-4 hrs prior Small meal; 1-2 g CHO/kg, 1-2 hrs prior Snack/liquid; < 1 hr BEFORE Snacks before 250 – 500 ml fluids within 1-2 hr prior Portable – enroute training Restaurant/fast food options Readily available at home after school, etc. BEFORE Comp/Training Considerations Do’s ? Low glycemic CHO, small amount low-fat protein ~2g CHO/kg >2 hrs ? Limit fibre Ample fluids Too nervous to eat: Dry CHO, sport drinks, dilute juices, blended drinks, Boost etc. Don’ts Try new foods or fluids day of competition Avoid eating/drinking Consume energy drinks, carbonated drinks, alcohol Include spicy, gas forming foods, fatty, high sugar foods BEFORE MEAL EXAMPLES… Meal 1 Instant oatmeal, ¾ c 1% milk, 1 banana, 1 boiled egg, ½ ww bagel, 1 tsp butter, water 549 kcal, 90g CHO, 23g Pro, 13g Fat Meal 2 6” turkey sub, 591 ml apple juice, water 591 kcal, 96g CHO, 18g Pro, 15g Fat Meal 3 3 oz chicken breast, 2 c cooked brown rice, 1 c stir fry veggies, 1 Tbsp olive oil, water 681 kcal, 94g CHO, 33g Pro, 19g Fat GOALS DURING EXERCISE / COMPETITION Prevent hypoglycemia Maintain hydration Prevent hyponatremia Consider Environment – hot/humid/cold/windy/altitude Intensity of exercise Duration of exercise Type of exercise – swim, biathlon, adventure racing, etc. Access to foods/fluids DURING EXERCISE/COMP Prevent hypoglycemia > 60 minutes non-stop Duration: 30-60 g CHO/hr 2 cups Gatorade per hour Combo of CHO sources: glucose, sucrose, fructose, OR maltodextrin Athletes prefer sour (lemon) to sweet drinks; 6-8% CHO 30 g CHO 500 ml sport drink, ¾ most CHO sport bars, 1 banana, 3 Fig Newtons, ~1 sport gel Multi-Events – consume CHO during breaks to sustain energy (sport drink, crackers, energy bars, fruit, milk/yogurt RECOVERY FLUIDS – wrong choices Carbonated drinks Alcohol Delays short term recovery Energy drinks Anxiety, insomnia, GI upset, rapid heartbeat, higher risk for injury, unwanted withdrawal symptoms. Do Not exceed 5.3 mg/kg <12 yr 8.0 mg/kg adult (2 Red Bull for 30 kg child) (2 RockStar, 1 Starbucks Grande) RECOVERY FLUIDS… Water 100% fruit juice Milk/Chocolate milk Sport drink Yogurt Smoothies 1 lb (0.5 kg) wt/sweat loss = 16-24 oz (450-675 ml) fluid High GI fluids Carb + Pro fluids Post game meal High CHO, Moderate Pro & Fat with Ample Fluids & Salt 4 Rs for Recovry Restore muscle glycogen Replace sweat losses Repair muscle damage Rest CASE STUDY SOCCER & RECOVERY NUTRITION 15 yo male, 6’, 165 lb (75 kg) Fatigue Poor eating habits Goal: increase LBM & Energy Trains x2/day Loses 3 lbs sweat at practice High fast foods, eat “on the run” High pro – low CHO bar 1x/d (recovery) Dietary intake initial visit with sports RD Kcal 2899, Pro:98g, CHO:344g, Fat: 124g Recommended Intake Kcal 4367, Pro:128g, CHO:600g, Fat:135g, Fluids: 3.5-4 L 1.7-2.0g Pro/kg, 8-10g CHO/kg, 1.8g Fat /kg growing adolescent Initial Training Diet: Soccer Breakfast Snack Lunch Snack Post Train Supper Snack 2 c Cheerios, 1 c milk, (sleeps late) Practice 2 c water (over 1.5 hr) Candy bar (famished), 1 c water after exercise Super Burger, L fries, 375 ml cola No fluids or snack before practice Practice (2 hr), 1 c water Hi Pro, Lo CHO bar, 1 c sport drink 3 oz chicken, 10” tortilla, ½ c lettuce, green pepper, 2 Tbsp creamy dressing, 375 ml sprite (fast food, in car) 6 chocolate chip cookies, 1 c fruit punch (doing homework) 1Milk/alt, 8Grain/Starch, 6ozMeat/alt, 1/2Veg, 0Fruit, 2 Tbsp dressing/hidden fats 2.5 L Fluids Kcal 2899 CHO 344g Pro 98g Fat 124g YOUR RECOMMENDATIONS Food/Fluids When What Where How much Sleep How much Recommended Training Menu Breakfast 2 c Cheerios, 1 c milk, 1 c OJ Practice 2 c water before & during Snack Banana, 2 Tbsp peanut butter, 2 c apple juice Lunch 2 tuna sandwiches on WW, 3 tsp Becel, 1 c V-8 juice, apple, 1 c water Snack 1 cereal bar, 1 c sport drink, (1 hr before) Practice (2 hr), 1 c water + sport drink Post Train 1 c water, 1 c choc milk, 3 c sport drink, (if 3 lb sweat loss) Supper 4 oz chicken, 1 ½ c rice, 1 c broccoli, garden salad, 2 Tbsp olive oil/vinegar, ¾ c mixed berries, 1 c milk, Snack 2 oatmeal cookies, 1 c milk, 1 oz dark chocolate 4Milk/alt, 13Grain/Starch, 8-9ozMeat/alt, 4Veg, 5-6Fruit, 8Tbsp dressing/+ less hidden fats 4+ L Fluids Gold Medals are won by: Good genes Years of quality training Consistent, optimal nutrition QUESTIONS? Your Resources THANK YOU Jorie Janzen, RD Sports Dietitian joriejanzen@shaw.ca Sport Medicine and Science Council Manitoba Canadian Sport Centre Manitoba Coaching Manitoba Dietitians of Canada Gatorade Sport Science Institute Australian Institute of Sport