long course nutrition
TRANSCRIPT
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Long Course Nutrition
Lea Crosetti, RDwww.FoodCoachForYou.com
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Objectives Prevent common problems among athletes How to become more efficient: use what
you already have Match nutrition with training cycle Race day nutrition Hydrate effectively
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Common Problems with Athletes Racing the Long Courses?
Bonk GI Distress Heat Toxicity Dehydration Muscle Cramps
……Nutrition plays a role in all of it!
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Physiology: Energy Stores Carbohydrate stores (glycogen): 1800kcal
Glycolysis (anaerobic)
Fat stores (triglycerides): 80,000kcal Krebs Cycle (aerobic)
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Cross Over Concept Higher intensity
workouts require carbohydrates as primary fuel source.
Goal is to shift the Cross Over Point to the right so you burn more fat during higher intensityExercise
Intensity
Carbohydrates
Fat
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Goal of the Long Course
Be able to complete the race as efficiently as possible
Slower paces than the shorted races Rely more and aerobic energy systems to carry
the athlete through the longer distances Average calories burned in Ironman race?
Close to 10,000kcal Refueling all your calories is not possible
Reliance on body’s stores
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Carbohydrate Effect on GI System
Can only absorb so much carbohydrate at a time
Could lead to GI distress
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Metabolic Efficiency Goal of metabolic efficiency is reduce
calorie need per hour during training and race
Physiologically: Easier to move with less oxygen Aerobic training
Nutritionally: Higher use of fat for energy Limit carbohydrates during base training
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Carbohydrates Role In Metabolic Efficiency
High carbohydrate = carbohydrate oxidation (glycolysis)
High carbohydrate intake = insulin spikes Insulin inhibits fat oxidation (aerobic)
The more metabolic inefficient, the more reliance on carbohydrates
Not promoting low carb! Balance is key!
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Remember the Fourth Discipline of Triathlons
Would you show up to a race without training in swimming, cycling and running?
Same is true with nutrition, need to train in fueling strategies
Use nutrition periodization to support body’s energy needs
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Base Training Nutrition Plate Goal is to:
Improve cardiorespiratory system
Become more metabolically efficient
Training consists of: Slowly building volume Keeping intensity low
Nutrition should be: Lower carbohydrate and
higher in protein and healthy fats
*4-7g/kg CHO, 1.2-1.7g/kgPRO, 0.8-1g/kgFAT
Fruits and Vegetables
Dairy
Whole Grains
Protein and Healthy Fats
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Competition Phase Nutrition Plate
Fruits and Vegetables
Protein and Healthy Fats
Whole Grains
Sports Nutrition Products
Dairy
Goal is to: Efficiently clear lactate so you
race stronger and faster Training consists of:
Higher intensity and moderate volume workouts
Nutrition should be: Increase volume and consistent
feedings to meet the continual energy and recovery demands
Higher carbohydrates to meet anaerobic demands of high intensity workouts
*7-5g/kgCHO, 1.4-1.6g/kgPRO, 0.8-2g/kgFAT
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Transition Nutrition Plate Goal is to:
Rest and recover physically and mentally
Training consists of: Unstructured activities Exercise vs training
Nutrition should: Less volume to match
workouts Begins transitioning to a
lower carb base nutrition *3-4g/kgCHO,
1.6-2.5g/kgPRO, 0.8-1g/kgFAT
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Fruits and Vegetables
Dairy
Whole Grains
Protein and Healthy Fats
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Race Day Nutrition
Fueling Hydration Electrolytes
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Pre-Race Nutrition Fuel: mixed meal that YOU are able to
tolerate A carbohydrate meal consumed 1.5-4hrs before
may not show much benefit if some carbohydrates are consumed during.
Hydration: 4hrs to race: 0.07-0.1oz/lb Electrolytes: salt added to meal or
beverage
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Fueling: Carbohydrates Main source of energy during
races/workouts Research supports 30-90g/hr With metabolic efficiency will not need as
much Variability amongst athletes Excess can lead to GI distress and sugar
crashes
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Fueling: Carbohydrates Sources
Drinks, bars, gels, shot blocks Fruits, sandwiches, cookies, pretzels
Go for less concentrated source Taste and tolerance is key
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Fueling: Protein Not a main source of energy but a small
amount may be beneficial Can help with maintaining blood sugar
levels May prevent hunger during the race Aids in recovery
Glycogen stores and muscle synthesis Prevents degradation of muscle tissues
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Fueling: Protein BCAA: leucine, isoleucine, valine
Taken up by muscle directly so it can be used for energy Whey protein is a good source of BCAA (20g pre and
post) Glutamine
Helps immune system and reduces stress of training Found naturally in meats, eggs, milk as well as raw
cabbage, beets and spinach Sources
Some drinks (Accelerade, Perpetuem, Prolong) Most bars (powerbar, cliffbar, luna bar)
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Fueling: Fat During training and races is distance dependent
Ultra-endurance athletes: yes Ironman athletes: may not necessarily
Types Medium Chain Triglycerides (MCT)
Not always tolerable Anti-inflammatory fats
Omega 3s
Sources Some bars, peanut butter, cookies, pizza
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Hydration Assessing
Color of urine Urine specific gravity Weight changes
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Hydration Replacement depends on sweat rate
Weight prior to workout – Weight after workout out + Fluids (oz) consumed during workout
Example: 170lbs prior to 2hr workout, drank 32oz fluid during, and weighed 169lbs after
170 – 169 = 1 + 2 = 3lbs or *48oz/2hr = 24oz/hr 6oz every 15 minutes
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*16oz in 1lb
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Hydration Should be taken with sodium for absorption Every 15-20 minutes
Amounts depend on sweat rate
Considerations Duration, clothing, environment, course, special
needs bags
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*16oz in 1lb
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Sodium (Na)* Chloride (Cl) Potassium (K) Calcium (Ca) Magnesium (Mg)
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Electrolytes Not be afraid of the salt shaker Athletes tend to worry too much about
carbs and too little about electrolytes 500-800mg Na per hour
However some athletes that are salty sweaters will need more during a race if
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Electrolytes Hyponatremia (low sodium levels)
Signs Swollen hands, bloated stomach, confusion Headache, dizziness, muscle cramping, nausea
and vomiting Due to
Too much water w/o sodium Excessive salt loss Limited sodium intake
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Electrolytes Muscle cramping likely due to depletion of
sodium and/or dehydration Sources
Sports drinks Likely unable to meet electrolyte needs alone
Salt sticks, Endurolytes, Nuun Pretzels, chicken broth, bananas
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Caffeine Stimulates CNS Pre race
Taper if you are a regular caffeine user 3-9g/kg, 60-75 minutes prior to race
During race BE CONSISTENT! 1-3g/kg every 90-120 minutes Can cause GI distress
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Post Race Nutrition Hydration: 150% of loss (24oz/lb) Carbohydrate: 0.8g/lb Protein: 0.4g/lb Fat: minimal Sodium: 500mg/lb lost
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Final Tips Prepare for that fourth discipline of the race Work toward becoming metabolically
efficient Practice balanced everyday nutrition Test out fueling strategies during training Periodize your nutrition Do your course homework before the race
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References Bob Seebohar
Metabolic Efficiency Training Nutrition Periodization for Endurance Athletes
Louis Burke Practical Sports Nutrition
Nancy Clark Sport Nutrition Guidebook
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My Services
Nutrition Consultations Meal Plan Development Nutrient Analysis Nutrient Assessment and Timing
Speaking Engagements Corporate Wellness Programs
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THANK YOU!
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