Chapter 3-Bioenergetics Flashcards
3 energy systems used to replenish ATP
Phosphagen system (anaerobic)
Glycolysis (fast and slow, both anaerobic)
Oxidative (aerobic)
Bioenergetics
The flow of energy in a biological system, mainly converting food into biologically useful chemical energy
Which macronutrient can be metabolized for energy without using oxygen?
Carb
What activities utilize the phoshagen system?
Short term, high intensity like sprint and jump
Also, at the start of any activity regardless of intensity
Which type of muscle utilizes the phosphagen system?
Type II (fast twitch)
What does glycolysis utilize and how long does it last?
Glycolysis is the breakdown of carbs, either from glycogen stored in muscles or blood glucose.
About 2 min
What activities might utilize glycolysis?
Tennis volley, 600 800 meter runs
Is glycolysis aerobic or anaerobic?
Anaerobic
How is fast glycolysis different from slow glycolysis?
The pyruvate is converted to lactate, providing ATP at a faster rate than slow glycolysis
If lactic acid doesn’t cause soreness, what else could it be?
Immune response to repair microtearing, and decreased tissue pH from many sources of acid
What is the Cori Cycle?
Conversion of lactate into glucose in the liver
Post exercise, when do blood lactate levels peak?
5 min
What macronutrient replenishes glycolysis?
Carb .7-3.0 g per kilo body weight
What is EPOC?
Excess postexercise oxygen consumption
The oxygen uptake above resting values used to restore the body to the preexercise condition.
