General Nutritional Recommendations Flashcards
Daily total caloric goals for athletes
-appropriate energy is cornerstone of athletes diet
-depends on: training or competition cycle, varies daily weekly yearly and by volume and intensity
Energy Balance
Total energy Intake (EI) equals Total Energy Expenditure (TEE)
-TEE consists of BMR, thermic effect of food, and thermic effect of activity
-most athletes use the 2.25 activity factor
RMR (resting metabolic rate)
-Sedentary= 60-80 of TEE is RMR
-Athletes= 38-47 of TEE may be RMR, TEA may be as high as 50%
Energy Availability
-Equates energy intake with requirements for optimal health and function rather than
energy balance
- Dietary intake minus exercise energy expenditure, normalized to Fat Free Mass
-EA >45 is optimal
Low EA <30 impairs body functions
-EA=(EI-EEE)/FFM
Low EA
-associated with comprimsed athletic performance and health
-interventions to increase EA can reverse some body functions
Daily protein Recommendations
Adults-0.8
Strength- 1.6-1.7
Endurance- up to 2.1
-found that total protein intake is similar amongst endurance and resistance athletes
Endurance vs resistance
eat more protein from bread and cereals
-plant-based
get more from dairy, meat and eggs
current recomendation: 0.24-0.31
Older adults
-exhibit dampened protein synthesis
-require 100%> volumne to achieve the same protein synthesis as young adults
Protein Criteria
-complete
-rapidly digested
-leucine rich
-whey>soy, milk>soy
Carbs
-primary energy
-stored as glycogen
-made of starch
-once glycogen stores are low, athlete will hit a wall
-muscle contraction fueled by CHO at all intensities
CHO and endurance
-During exercise longer than 2 hrs:
-carbs will prevent hypoglycemia, carb oxidation, delay the onset of fatigue, reduce ratings of perceived exertion
CHO and Team Sport performance
-Impact of CHO is harder to quantify bc hard to measure for team
-CHO appears to improve intermittent high intensity exercise capacity
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Daily Carb Recommendations
Low- 3-5
Mod- 5-7 (1 hr)
Endurance (1-3 hrs)- 6-10
Extreme Commitment (4-5) 8-12