D3 - Rest and recovery in interval-based exercise Flashcards
What fuels the phosphagen system in the body?
The phosphagen system in the body is fueled by creatine phosphate (CP) stores
Which energy system has the highest power output but limited fuel availability?
The phosphagen system has the highest power output (rate of ATP production) but has limited fuel available.
How long can the phosphagen system provide peak power?
The phosphagen system can provide peak power for only approximately 11.5 seconds.
What determines the energy system used during exercise?
Power output determines the energy system used during exercise.
What type of muscle fibers are recruited for short-duration intensity bursts of power?
Type 2b fast-twitch fibers are recruited for very short-duration intensity bursts of power
Why do Type 2b fast-twitch fibers fatigue quickly?
Type 2b fast-twitch fibers fatigue quickly because they produce high force levels quickly.
Which muscle fibers are more fatigue-resistant than Type 2b fibers but cannot produce force as rapidly?
Type 2a fast-twitch fibers are more fatigue-resistant than Type 2b fibers but cannot produce force as rapidly.
When are Type 1 slow-twitch fibers used during exercise?
Type 1 slow-twitch fibers are used in lower-intensity exercises like light resistance work aimed at muscular endurance and long-duration aerobic activities.
What percentage of energy for an 800m run comes from the anaerobic system?
An estimated 40 percent of the energy required for each 800m run comes from the anaerobic system (mostly the glycolytic system and a small amount of lactic acid accumulation).
What is the best type of recovery after exercise bouts producing lactic acid?
The best type of recovery after exercise bouts producing lactic acid is light work or active rest.
What happens if you don’t get enough rest after high-intensity exercise?
If you don’t get enough rest after high-intensity exercise
What might result from fewer repetitions per work set and longer rest periods during a workout?
Fewer repetitions per work set and longer rest periods might mean a reduced average power output throughout the workout
