Edexcel A Level PE - Energy systems, energy continuum, fatigue and recovery. Exam Questions And Answers 100% Pass.
0 view 0 purchase
Course
Energy Systems
Institution
Energy Systems
Edexcel A Level PE - Energy systems, energy
continuum, fatigue and recovery. Exam
Questions And Answers 100% Pass.
What is the lactate threshold? - AnswerThe highest point at which a person can work prior to
OBLA occuring
What is OBLA? - AnswerOnset of Blood Lactate Accumulation
-the point wh...
Edexcel A Level PE - Energy systems, energy
continuum, fatigue and recovery. Exam
Questions And Answers 100% Pass.
What is the lactate threshold? - Answer✔The highest point at which a person can work prior to
OBLA occuring
What is OBLA? - Answer✔Onset of Blood Lactate Accumulation
-the point where the lactate threshold is surpassed and lactic acid floods the body, causing fatigue
What is a dominant energy system? - Answer✔The energy system that is supplying the most
energy to the body at any one time
What factors affect which energy system is the dominant one? - Answer✔-Intensity of exercise
-Duration of exercise
-Fitness level of the individual
What is the advantage of having an understanding of energy pathways and the energy
continuum? - Answer✔It enables athletes to target their training specifically towards a given
energy pathway/system to enable the necessary adaptations to occur
What are the seven causes of fatigue? - Answer✔-Build up of lactic acid (OBLA)
-Glycogen depletion
-Dehydration
-Decreased Calcium levels in the sarcoplasmic reticulum
-Lack of phosphocreatine stores
-Decreased levels of acetylcholine
-Electrolyte loss
How long does it take for glycogen stores to deplete? - Answer✔2 hours
What concentration of lactate in the blood causes OBLA? - Answer✔4mmol/l
What is the effect of a decrease in calcium ions in the sarcoplasmic reticulum? -
Answer✔Inhibition of muscular contractions
What is the significance of acetylcholine in the body? - Answer✔It is the dominant
neurotransmitter molecule in the body
What is oxygen consumption? - Answer✔The amount of oxygen used by the body
What is oxygen deficit? - Answer✔A quantity of oxygen that would've been used if it were
available
What is EPOC? - Answer✔Excess Post-exercise Oxygen Consumption - a quantity of oxygen
consumed after exercise over and above resting levels
What are the two stages/components of EPOC? - Answer✔-Stage 1 - fast component
-Stage 2 - slow component
What is another name for the fast component of EPOC? - Answer✔Alactacid component
What is another name for the slow component of EPOC? - Answer✔Lactacid component
What processes occur during stage 1 of EPOC? - Answer✔-Resaturation of myoglobin with
oxygen
-Resynthesis of phosphocreatine
-Resynthesis of stored ATP
What processes occur during stage 2 of EPOC? - Answer✔Removal of lactate and H+ ions
(lactic acid)
What happens to the lactic acid that is removed in stage 2 of EPOC? - Answer✔It is converted to
urea OR water and carbon dioxide OR glucose OR glycogen
How long does it take for 50% of PC stores to be replenished in stage 1 of EPOC? - Answer✔30
seconds
How long does it take for 100% of PC stores to be replenished in stage 1 of EPOC? - Answer✔2-
3 minutes
How long does it take for lactic acid to be removed in stage 2 of EPOC - Answer✔5 minutes to
an hour
What is the energy continuum? - Answer✔The relative contribution of all three energy systems
to the resynthesis of ATP (at the same time)
Where does the ATP-PC system act? - Answer✔Sarcoplasm
Where does the Lactic Acid system act? - Answer✔Sarcoplasm
Where does the Aerobic system act? - Answer✔Mitochondria
2|Page
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Brightstars. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.49. You're not tied to anything after your purchase.
