Objective 16 Flashcards
0
Q
What four things need to occur in order for a muscle to return to a maximally functioning resting state?
A
- Oxygen reserves must be replenished
- Lactic acid must be converted to pyruvic acid
- Glycogen stores must be replaced
- ATP and CP reserves must be resynthesized
1
Q
What is oxygen debt?
A
When vigorous exercise causes dramatic changes in muscle chemistry
(It is the extra amount of O2 needed for the restorative process to occur)
2
Q
What is muscle fatique?
A
The physiological inability to contract
3
Q
Describe how muscle fatigue occurs
A
When ATP production fails to keep pace with ATP use
4
Q
What causes muscle fatigue?
A
- Muscle fatigue is due to ionic imbalances (Na+-K+ pumps cannot restore ionic balances quickly enough)
- Due to lactic acid accumulation in the muscle
5
Q
Why are “rest days” crucial to allow for SR repair?
A
Because prolonged exercise damages the SR and interferes with Ca2+ regulation and release
