Term
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Definition
ATP:energy carrying molecule, must be generated contin.
Creatine: STORES energy that's used for ATP
-muscle concentration is 4-5 times greater than phosphate
-can be broken down to support regeneration of ATP for 3-15 sec of max physical effort
-low intensity allow system up to 3 min |
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Term
| Carbs,fat,protein used for energy |
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Definition
carbs: used for high intense activity
fats:low intensity exercise
proteins: used only minimally as a fuel source for exercise |
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Term
| Fast Twitch vs. Slow twitch fibers |
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Definition
Fast:anaerobically, exert more force than slow,but tire quickly for 100 meter dash, FT most power
Slow: breakdown carbs and fats w/ aerobic pathways,maintain muscular activity for prolonged time,aerobic endurance, low intensity endurance & everyday activities |
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Term
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Definition
athletes should have 60-70% carbs
decrease in exercise intensity & duration prior to competition
glycogen content of muscles doubles & allows athletes to work at a high intensity for longer time |
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Term
| When is good time to eat carbs when training and why? |
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Definition
during high activity carbs&protein intake must be met to maintain body wt.
carb loading helps maximize muscle glycogen intake, extend endurance |
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Term
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Definition
Leucine,isoleucine and valine
hypoth, to benefit athletes by
1. compete w/ tryptophan, get in the way and delay fatigue
2. used by muscle near end of long endurance event,consumed b4,they will provide energy towards end of event |
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Term
| Ergogenic aids and fitness contributions |
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Definition
meal powders,drink supplements,energy bars,gels
used to improve availability of macronutrients,not as replac for good eat in a day
Wt. gain powders:gain muscle by adding cal from protein,30-50% is muscle,rest is fat
Branched AminoAcids: delay fatigue and provide energy towards end of event
Creatine: improve muscle strength, power for sprints,has sideeffects of dehydration,GI disturbance
antioxidants, caffeine, ephedrine(banned in U.S), baking soda,chromium,iron(bc rbc lost) |
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