PROTEIN - NASM
Transcript of PROTEIN - NASM
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PROTEIN
Optimizing Intake for Muscle Gain & Weight Loss
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Introductions
Mike Fantigrassi | MSNASM Director of Product
Development
Brad Dieter | PhD, MS
Exercise Physiologist Molecular Biologist
Biostatistician
Chief Scientific Officer, Eat to PerformChief Scientific Advisor, Outplay Inc
Master Instructor
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WWW.SLIDEFOREST.COMPresented By: Brad Dieter, PhD, MS
ProteinHow to Optimize Protein for Muscle Gain & Weight Loss
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Agenda
1. Understanding protein, its role in physiology,
and protein metabolism.
2. How much protein should you consume to maximize
weight (fat) loss.
3. How much protein should you consume to
maximize muscle growth?
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A Crash Course On Protein
Structure and Function
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1. A Crash Course On Protein Metabolism
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The amino acid pool is the basis for protein metabolism
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Stokes et al. Nutrients 2018
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Recap
• Dietary protein is broken down into amino acids which are then absorbed from the GI tract into the blood stream.
• Dietary protein, and protein from the body contribute to the overall amino acid pool.
• About 50% of dietary protein makes into the blood stream, and only 10% goes to new protein synthesis
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Muscle Gain Weight Loss
VS
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2. How Much Protein Should We Consume
Per Day?
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Antonio et al. Journal of the International Society of Sports Nutrition. 2015
There May Be a Ceiling
Above 2.2 g/kg For Growth
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Mu
sc
le G
row
th
Daily Protein Intake
~1.6 g/kg/day
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3. How Much Should We Consumed Post
Workout To Maximize
Muscle Protein Synthesis?
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Sustained Moderate Feeding
Is Superior to High Dose Boluses
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https://physoc.onlinelibrary.wiley.com/doi/epdf/10.14814/phy2.12893
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Greater MPS at Higher Intakes
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Mu
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rote
inS
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the
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Acute Protein Intake
Groen et al. PLOS One. 2015
40 grams post workout
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Recap• Studies that have looked at high protein intakes show no measurable
benefit on muscle growth above ~2.2-2.3 g/kg, indicating a ceiling on
growth. This is supported by meta-analysis.
• The true ceiling may be closer to 1.6 g/kg. More studies need to be
conducted on finding the peak intake for muscle growth.
• 40 grams post workout is most likely the best “bang for your buck” for
most grown adults.
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Resistance training and protein are both critical to muscle growth.
Consume ~0.4 g/kg within a few hours post exercise.
Meals should be spaced out 3-5 hours apart.
Consuming protein within 1-3 hours before bed can preventovernight reductions in muscle protein synthesis.
Application
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4. How does protein impact weight loss?
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Dietary protein can lead to “eating
less”
Weigle et al. 2005
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Dietary protein increases fullness throughout the day
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Or Protein
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40 Men
~1.2 g/kg
~2.4 g/kg
40% Calorie Deficit
+ 6 Day/Week Exercise
Changes in Body Weight and Composition
Changes in Body Weight and Composition
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Recap
• Higher protein intakes (~1 g/lb) can cause people to eat less calories
overall, in part by increasing their feelings of fullness. This can lead to
extra weight loss.
• Higher protein intakes (~1 g/lb) can help people maintain muscle mass
and in some cases slightly increase muscle mass during periods of
calorie deficits (aka dieting).
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Higher protein intake (~1 g/lb) can help suppress appetite andmaintain muscle mass during deficit cycles (aka dieting cycles).
There is less emphasis on protein timing when dieting and total daily protein intake should be the big focus.
Resistance training is critical during periods of dieting and should be coupled with higher protein intakes.
Application