Exam 3 Flashcards
pre-exercise snack/meal: training/amount ACSM
page 184-187
4 hours out, how many grams of carbs
2g/lb
2 hours before workout, how many grams of carbs
1g/lb
5-60 min before workout, how many grams of carbs
.5 g carb/lb
blood flow during low/moderate intensity
60-70% stomach
blood flow during high intensity
20% stomach, causes GI issues
Fueling after exercise
important for those who exercise longer than 60 min
replace fluids (not sodium)
focus on carbs, little protein
how many calories?
Causes of muscle cramps
dehydration, electrolyte imbalance, poor conditioning, lack of water-calcium-potassium-sodium-magnesium
Carb window after exercise, why?
15-45 min. eznymes for making glycogen most active, best time to rapidly replace depleted glycogen
waiting 2 more hours = 50% less stored
Why Carbs and a little protein after exercise?
carb - release of insulin to help build muscle and transport carbs into muscle to replenish depleted magnesium
protein - reduce cortisol which causes break down of muscle
3:1 ratio
Marine Corp Study
group 1 - 100 calorie postt exercise beverage (protein, fat, carb)
group 2 - only water
group 3 - formula without protein
-group 1 had fewer medical visits, less visits for viral/bacterial infections, less muscle/joint problems,less muscle soreness, 83% less heat exhaustion
Keys to weight gain
gain muscle mass not fat
high crb, adequate protein
.7-.8 g/lb protein for adult
eat larger portions
Pros to weight gain drinks
convenient - high in calories
blend of protein and carbs for varying speeds of absorption
Cons to weight gain drink
expensive, no advantage over real food, ingredients not always regulated, useless additives
percent of total calories for fat, carb, protein
protein - 10-15%
carb - 55-65%
fat - 25-30%
calories per macromolecule
fat- 9
carb - 4
protein - 4
Cribb and Hayes study
body builders consumed 270 calories of carb protein supplement immediately before and after exercise. other group only in morning and evening. first group gained 6 lbs vs 3.3, and bench pressed 27 more pounds vs only 20 more pounds