Anaerobic Energy systems
During a 40 yard dash, what energy system is being used?
ATP-PCr
what hormone regulates blood sugar levels by lowering glucose in the bloodstream
Insulin
What does EPOC stand for?
Excess Post Exercise O2 Consumption
True or False: The aerobic energy system doesn’t
require oxygen.
False
What is the "cross over" when exercising?
When CHO are used as the main source of energy than fats.
The glycolytic system can be used up to how many min/sec?
Up to 2-3 minutes
rate limiting enzyme in ATP-PCr system
Creatine Kinase
what is the ratio for exercise EPOC for moderate intensity workout?
1:1
What part of the cell do aerobic energy systems take place?
Mitochondria
Why are fats used during low intensity exercise more than carbs?
Fats are broken down when oxygen is available, and breaks down slower than CHO.
During the process of glycolysis how many ATP are invested?
2 ATP
Why do trained athletes often show lower levels of stress hormones after a workout compared to beginners?
Their bodies are more efficient at balancing hormones and energy use
what factors contribute to a FAST Excess Post Exercise O2 consumption?
resynthesis of PC in muscle and the removal of lactate
If H+ was picked up by NAD before the Electron Transport Chain, how much ATP would be produced?
2.5 ATP
What substrate breaks down ATP the fastest?
PCr
During Anaerobic metabolism, the build up of _____ causes weakness/fatigue in muscles
Hydrogen Ions
This hormone increases fat metabolism and assists with long-term energy supply during endurance exercise.
Growth Hormone
For short duration high intensity workouts does EPOC ratio increase or decrease?
increase
what is the gross ATP production per glucose molecule?
32-34 ATP
How does the body’s fuel use change in the transition from rest to steady state exercise?
Start off using mainly CHO but once you reach steady state will rely more on fats.
Which of these following activities use the glycolytic and/or ATP-PCr energy system…. 2 mile run, half marathon, or a 45 minute long easy yoga class?
None of the above
When you start exercising, which hormone increases to help release stored energy and raise heart rate?
Epinephrine and Norepinephrine
Why is determining lactate threshold important?
Can be used to establish protocol for endurance training and predict success in distance running/any steady state exercise.
In the Citric Acid Cycle, what do the numbers “3 2 1 1” represent?
3 NADH+H
2 CO2
1 ATP
1 FADH2
Why might a low carb, high fat diet affect endurance performance?
Rely more on fats to break down for energy, CHO are low so could limit performance due to less glycogen/glucose