Physically Active Lec by Maam Luchi Flashcards
5 important aspects for athletes
TTRSD
Training
Treatment
Rest/Recovery
Supplementation
Diet/Nutrition
Limiting factors make it more difficult to achieve
optimal results
5 limiting factors
GNPPM
Genetic Make UP
Physical Activity Patterns
Physiology
Mindset
Nutrition
3 physiological limits
TGS
Thyroid hormone imbalance
Sex Hormone Imbalance
Gastorintestinal dysfunction
3 difficulties of physiological limits
WMA
-weight loss
-muscle gain
-athletic performance
Most important among the 5 limiting factors
Nutrition
5 definition of Good Nutrition
-balanced energy
-nutrient dense
-outcome based
-sustainable
-achieve health, body, and performance goals
T or F
Active ppl do not require additional nutrients beyond those obtained in a nutritionally well balanced diet
True
What physically fit eat (3)
-small diff in energy intake (low v high)
-high fiber & low cholesterol
-diets are close w/ recos
5 tools
-Dietary Ref Intake
-EAR
-RDA
-AI
-Tolerable upper intake level (UL)
My Pyramid provide food based on 3 factors
-age
-sex
-PA level
Caloric distribution range reco by My Pyramid
CHO: 45-65%
Fat: 20-35%
Protein: 10-35%
Breakfast reco to athletes (2)
-low sugar
-balanced CPF for satiety to maintain energy levels
Specific CPF reco by My Pyramid
60 % CHO
25% Protein
15% Fat
Snack reco to athletes
Low fat HIgh Carbs
Breakfast is vital to preserve (2)
muscle tissue and carb stores
Food Snacks reco to athletes (8)
-sports bar w/ little F & P
-hard boiled egg & crackers
-cereal & 1 cup LF milk
-yogurt w/ granola
-boiled saba
-corn on cob
-pancit/spag
-miswa soup
most obvious distinction in nutrient needs between active and inactive is
more total calories
daily intake does not exceed how may kcal for men and women
4k kcal for men
3k kcal for women
minimum total calories for males
current wt (lb) x 23
minimum total calories for females
current wt (lb) x 20
high caloric intakes of physically active men & women usually increase
protein, vitamins, & mineral intake above normal
percentage of calories from energy nutrients should remain in
normal ranges
no. 1 source of energy in muscles
carbs
optimal fuel for exercise
cabrs
prolonged and intermittent, intense training depletes ________ resulting in _________ and _________
depletes carbs or glycogen stores resulting in poor performance & training
Carbs should provide atleast 55% of ______ and ideally _____ - _____% of it
total daily calorie (TDC) intake, ideally 60-70% of it
high fat diet provides how many % of calories from fat & protein
94% fat, 6% protein
mixed diet provides _____% calories from _____
55% calories from carbs
High carb diet provides _____% calories from carbs
83% calories from carbs
more intense or prolonged training requires more
carbs
carbohydrate needs for trainings:
1 hr
2 hrs
3 hrs
4+hrs
1 hr = 3 g/lb BW
2 hrs = 4.5 g/lb BW
3 hrs = 5 g/lb BW
4+ hrs = 6 g/lb BW
Carbs Needs Before Exercise
pre exercise fructose absorbs more slowly but can cause
GI distress
Carbs Needs Before Exercise
consuming rapidly absorbed high glycemic CHO w/in 1 hr before exercising results to
-accelerates glycogen depletion by causing insulin overshoot & rebound hypoglycemia
Carbs Needs Before Exercise
consuming low glycemic CHO (<30 mins) allows
slow absorption
Carb needs DURING Exercise
grams per hr
30-60
Carb needs DURING Exercise
5-10 oz of ____ every ______
5-8% CHO electrolyte drink or 2 gels/hr -> contributes to temp regulation
Carb needs AFTER Exercise
how to speed up glycogen replenishment
consume 50-75 g moderate to high Glycemic INdex w/in 15 mins
Effect of low carb diets for athletes
-muscle glycogen depletion leading to decrease performance
glycogen depletion occurs after
~2 hrs of vigorous exercise
how does hypoglycemia occurs
glycogen depletes -> liver converts lactate and some amino acids into glucose
what does hitting the wall mean
carb stores in muscles get too low
bonking meaning
carb stores in liver get too low
4 bonking symptoms
(FILL)
loss of coordination
light headedness
inability to concentrate
feeling weak
Staleness meaning
intense training gradually deplete glycogen stores even w/ typical CHO intakes
2 high CHO diets effect
increase muscle mass and endurance time
normal amt of glycogen in muscle
5g glycogen /100g muscle
Muscle glycogen levels in Glycogen Loading
more than normal = 1.7 g glycogen/100 g muscle
2 major benefits of CARB loading
endurance capacity
exercise <60 min requires normal carb intake
major DRAWBACK of Carb loading
each g glycogen stores 2.7g H2O, makes heavy fuel
Classic CARB Loading
Stage 1:
Day 1:
Days 2-4
Stage 1: depletion
Day 1: exhaustive exercise to deplete
Days 2-4: low CHO intake
Classic CARB Loading
Stage 3:
Stage 3: competition
Classic CARB Loading
Stage 2:
Day 5-7:
Stage 2: loading
Day 5-7: high CHO intake
Modified Loading
Days 1-3:
exercise @75% VO2 max
1.5 hrs
50% CHO
Modified Loading
Days 4-6:
taper exercise duration
70% CHO
too much fat can cause
cramps
not enough fat can cause
fatigue more quickly
try to limit ______ before & during exercise
high fat foods
limit TDC intake
<30% fat
fat provides energy at
lower intensities
fat helps the body make
hormones
recommended TER for FAT
25% - 30%
why is it important to time fat intake outside competition
it delays gastric emptying
Healthy/Good fats
unsaturated (canola/olive)
nuts & plants FAT
Omega 3 FATS (fish walnuts, flax supplement)
body cant use more than 1g of
protein/lb BW
Unhealthy/BAD fats
hydrogenated and trans fat
occasional fats (saturated animal fat)
note immediately available as an energy source for exercise
protein
protein is importance for (2)
recovery
boost immune system
TDC intake of protein
15-20%
protein reco for strength/aerobic athletes
0.5-0.7 g/lb bw
fluid needs required daily not including exercise
BW (kg) x 0.67
what is rehydration
restoration of fluid balance after exercise or intense activities
types of rehydration fluids
sports drink + isotonic drinks
water
energy drink
misc. (milk, coffee, etc)
drinking too much water which can be fatal
hyponatremia
how much to drink:
-2 hrs prior to activity
-15 mins prior
-every 15 mins during
-after
2-3 cups
1-2 cups
1/2 - 1 cup
atleast 2 cups
how to calculate % dehydration
100 x (pre exercise kg - post exercise kg) / pre exercise kg
what is hyponatremia
dangerous case of sofium depletion
overhydration -> dilute body fluids -> Na conc gets too low
pre work out meal goals
maximize muscle & liver glycogen stores to
provide glucose for intestinal absorption during exercise & enhance hydration
window for refueling
first 30 mins post exercise
why is glycogen repletion faster during window after exefcise
-increase blood flow to muscle
-glycogen producing enzymes are most active
Nutrition recovery goals of athletes
glycogen restoration
fluid & electrolyte replacement
muscle repair & adaptation
Nutrient Timing Resistance training
Energy Phase
high GI CHO & rapidly digested PRO supplement
Nutrient Timing Resistance training
Anabolic Phase
High CHO/PRO in liquid form 45min post exercise
Nutrient Timing Resistance training
Growth Phase
high GI CHO & PRO intake