Stores are limited. Body has enough to last approx. 90 mins. Athletes 'hit the wall' and are unable to use fat as a fuel on its own.
1 of 5
Lactic Acid build up
Releases hydrogen ions. Cause acidity increase in blood plasma. Inhibits enzyme action and causes pain.
2 of 5
Reduced rate of ATP synthesis
Stores of ATP and PC are depleted. Insufficient ATP to sustain muscular contractions.
3 of 5
Dehydration
Effects blood flow to working muscles. Loss of electrolytes (calcium) which help muscular contractions. Blood viscosity + blood pressure -. Sweat less -> body temperature +.
4 of 5
Reduced levels of calcium
Increase in hydrogen ions decreases amount of calcium released from sarcoplasmic reticulum. Affects muscular contractions.
5 of 5
Other cards in this set
Card 2
Front
Releases hydrogen ions. Cause acidity increase in blood plasma. Inhibits enzyme action and causes pain.
Back
Lactic Acid build up
Card 3
Front
Stores of ATP and PC are depleted. Insufficient ATP to sustain muscular contractions.
Back
Card 4
Front
Effects blood flow to working muscles. Loss of electrolytes (calcium) which help muscular contractions. Blood viscosity + blood pressure -. Sweat less -> body temperature +.
Back
Card 5
Front
Increase in hydrogen ions decreases amount of calcium released from sarcoplasmic reticulum. Affects muscular contractions.
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