Disclaimersesdkdhs.ss13.sharpschool.com/UserFiles/Servers/Server_143104/Fi… · • Protein...
Transcript of Disclaimersesdkdhs.ss13.sharpschool.com/UserFiles/Servers/Server_143104/Fi… · • Protein...
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Disclaimer
The nutritional and supplement recommendations in thiseducation module are an expression of the author's expertopinion and are not meant to be interpreted as absolutescientific conclusions and are not necessarily the views of theNSCA and its officers or affiliates. The statements pertainingto the effects of nutritional supplements have not beenevaluated by the Food and Drug Administration. None of theauthor recommendations are intended to diagnose, treat,cure, or prevent any disease.
Further more, The NSCA encourages the exchange ofdiverse opinions. The ideas or comments presented throughthis medium do not necessarily reflect the NSCA’s officialposition on an issue, nor an endorsement by the NCSA ofstatements made by any commentators, whether as fact,opinion or otherwise. The NSCA assumes no responsibilityfor any statements made by commentators.
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Body Composition
and Weight Management
Christopher R. Mohr, PhD, RD
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The Importance of Nutrition
• To keep healthy– Reduce the risk of illness
– Reduce the risk of injury
• Adequate hydration
• Carbohydrate intake
• Pre-exercise/post-exercise nutrition
• Weight management & body composition
• Improve energy, endurance, power, etc
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Prevalence (%) of Overweight,
Obesity, and Morbid Obesity
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Determining Athlete’s Intake
• Dietary record inaccuracies
– Potential underreporting
• Resulting in a negative energy balance - weight
loss (especially with female athletes)
– Potential overreporting
• Resulting in a positive energy balance - weight
gain (inconclusive data)
• Female athletes consistently energy deficient
– Consequences – decreased performance and
health risk.
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Energy=Calories=Fuel
Carbohydrate
Protein
Fat
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Basic Principles
• Carbohydrates are not the enemy
• Protein isn’t the answer to all fat loss or lean
body mass gain needs
• Healthy fat IS necessary
• Supplements are not a quick fix
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Benefits of Carbohydrates
• Optimal source of energy
• Important fuel for brain and muscles
• Quality source of nutrients that cannototherwise be obtained via the diet
• Carbohydrate quality should be the focus
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Carbohydrate Needs
• ~5-10 g/CHO per kg body weight
As an example, for a 200 lb (91 kg) athlete, they
would need approximately
450-900 g/CHO per day– Note: individual needs vary greatly based on current weight, goals,
type of athlete, etc.
– Strength athletes will be on the lower end of the spectrum, while
endurance athletes are on the higher end.
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Carbohydrate Sources
• cereal
• pasta
• bread
• potatoes
• banana
• milk
• fruit
• juice
• sport drinks
• rice
• pancakes
• oatmeal
• beans
• vegetables
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Benefits of Protein
• Crucial for rebuilding and repair
• Poor source of energy
• “Expensive” source of energy
• Necessary to provide essential aminoacids
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Protein
• Athletes need more than non-athletes
• Athletes who eat a restrictive calorie diet (e.g.wrestlers, gymnasts, etc.) may need additionalprotein
• Vegetarian athletes have the same protein needs butoften have difficulty meeting their daily needs
• Young athletes have increased needs
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Increase Protein Intake
g/kg/day
• Sedentary Individual 0.8
• Athletes
• Strength 1.4-1.8
• Interval Type 1.6-1.8
• Endurance Athletes 1.2-1.4
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Good Protein Sources• Milk
• Low-fat yogurt
• Whole egg (or egg whites)
• Chicken, beef, or turkey
• Cottage cheese
• Fish
• Beans/Rice
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Benefits of Dietary Fat
• Crucial to provide essential fatty acids
• Required for optimal brain functioning
• Important in reducing risk of somedisease
• Fat quality is most important
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Quality Sources of Fat
• 20-30% of diet for athlete
• Fish
• Raw mixed nuts
• Avocadoes
• Olive oil
• Egg yolks
• Flax seed/oil
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Individuals need to decide whether they
want to…
fuel their muscles
or
feed their fat cells
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Dynamic State
Energy Intake
Quantity
Energy Expenditure
ExEE
BMR
TEF
NEAT
SCALE
0
150
300
An excess of energy intake relative to expenditure will lead to energy surplus and storage
A deficit of energy intake relative to expenditure will lead to a loss of body energy
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What do we know about the role of diet?
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Weight Reduction
• If weight reduction is appropriate, the
individual must be in a negative energy
balance
• Weight loss strategies are most
appropriate in the off season or early in
the season, so the athlete’s
performance is not significantly
jeopardized
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Identify an Appropriate
Weight Range
• Use body composition as a guide to
establish an appropriate goal for weight
loss
• Consider
– Athlete’s past and present weight and body
composition
– Demands of training and the sport
– Gender
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% Body fat by sportMcCardle, Katch & Katch, Exercise Physiology, 5th edition
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Evaluate Current Dietary
Habits• Are meals being skipped
• How many meals and snacks does theathlete consume?
• Where does the athlete usually eat (home,school, work, fast food, etc)
• Are the foods consumed nutrient dense?
• Is the athlete reliant on whole foods or sportsdrinks, energy bars, and other supplements?
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Sample of Food Plate
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Summary: Establish Energy and
Macronutrient Requirements
• Use the recommendations for macronutrientintake to determine calorie needs for athletes– Carbohydrate: 5-10 g/kg (needs vary depending
on particular activity)
– Protein: 1.2-1.7 g/kg
– Fat: 1 g/kg
• Athletes need to ensure adequatecarbohydrate for performance and protein forrecovery, so fat is traditionally lower (~30% oftotal energy)
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References1. Volpe S, Bernier Sabelawski S, Mohr CR. Fitness
nutrition for special dietary needs. Champaign, IL:
Human Kinetics, 2007.
2. McArdle WD, Katch FI, Katch VL. Sports and
exercise nutrition. 2nd ed. Philadelphia: Lippincott
Williams & Wilkins, 2005.
3. Benardot D. Advanced sports nutrition. Champaign,
IL: Human Kinetics, 2006.