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PE Paper 1 > Energy for exercise > Flashcards

Energy for exercise Flashcards

1
Q

ATP-PC System ( SAETPN)

A

Sarcoplasm
Anaerobic
enzyme is creatine kinase
2-10 s
readily available
Low yield

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2
Q

Glycolytic system ( SAETPN)

A

Sarcoplasm
Anerobic
enzyme - PFK
up to 3 mins
provides energy for high intensity
bi product of LA

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3
Q

Aerobic system ( SAETPN)

A

Sarcoplasm , Matrix , Cristae
Aerobic
PFK - AcetylCOa
High yield
slow energy production

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4
Q

Start of aerobic system

A

Glycogen - Glucouse - Pyvuric Acid - Acetyl COa

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5
Q

Krebs Cycle

A

Acetyl COa- Oxoacetic acid - citric acid - hydrogen - c02

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6
Q

Electron transport chain

A

Hydrogen + oxygen - water = 34 ATP

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7
Q

ATP -PC resynthesis

A

50% in 30s , 100% in 2-3 mins

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8
Q

oxygen debt

A

volume of 02 consumed after exercise to return to pre exercise state

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9
Q

EPOC

A

Excess post exercise oxygen consumption

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10
Q

2 stages of EPOC

A

Fast alactacid , slow lactacid

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11
Q

Fast Alactacid - 10% of total EPOC (3-4L of 02)

A

resynthesise PC - 3 min for 100% - 50% 30s ( 3-4L 02 )
Replenish haemoglobin + myoglobin - oxygen associates with haemoglobin and oxymyoglobin in muscles

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12
Q

Slow lactacid ( 5-8L of 02)

A

Elevated circulation+ ventilation - keep 02 to muscles to get rid of LA
Elevated body temp - increases metabolic rate
Removal of LA- 50-75% put into pyvuric acid and krebs cycle
10-25% glucouse and glycogen
converted into protein
sweated or pissed out

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13
Q

EPOC -Work - Relief ratio

A

athlete can maximise recovery
High intensity - 1;3 so ATP can replenish
Speed endurance - 1;2 to improve buffering capacity
Aerobic - 1;1 to delay OBLA

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14
Q

EPOC -A warm up will

A

incrase 02 delivery

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15
Q

EPOC -cooling aids help

A

removal of LA

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16
Q

ATP is

A

the only useable source of energy in the human body
made up of 1 adensophine and 3 phosphate molecules which are held together by high energy phosphate bonds

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17
Q

ATPase

A

an enzyme that causes molecules to split

18
Q

ATP-PC - Exothermic reaction

A

ATP - ADP + P + Energy

19
Q

ATP-PC - Endothermic reaction

A

Energy+ P + ADP - ATP

20
Q

strengths and weaknesses of ATP-PC system

A
  • no delay for 02
  • PC readily available
  • no fatiguing bi-products
  • low yield
  • small PC stores lead to rapid fatigue
21
Q

strengths and weaknesses of glycolytic system

A
  • no delay for 02
  • large stores in liver and muscles
  • provides energy for high intensity activities
  • LA produced
    -low yield with lengthy recovery
22
Q

strengths and weaknesses of Aerobic system

A
  • large fuels
  • high ATP yield
  • long duration
  • no bi-products
  • slow energy production
  • delay for 02 delivery
23
Q

Glycolytic system

A

Glucose - Glycogen - Pyruvic acid - Pyvuric acid

24
Q

PFK

A

enzyme that breaks glucose into pyruvic acid - produces 2 ATP

25
Q

LDH

A

enzyme that breaks down pyruvic acid into lactic acid if no 02 is available

26
Q

Krebs cycle - stage 1

A

Acetyl COA combines with oxaloacetic acid to produce citric acid

27
Q

Krebs cycle - stage 2

A

citric acid is oxidised and C02 is released as a bi product - 2ATP released

28
Q

Krebs cycle - stage 3

A

hydrogen atoms are removed from the compound and transported to the kristae by hydrogen carriers - NAD and FAD

29
Q

The electron transport chain

A

hydrogen atoms are carried along cristae and split into ions and electrons
ions are oxidised
hydrogen ions carried by NAD - release 30 ATP
hydrogen ions carried by FAD release 4 ATP

30
Q

energy source for ATP-PC

A

phosphocreatine

31
Q

energy source for glycolitic system

A

glycogen/glucouse

32
Q

enegry source for aerobic

A

glycogen/fat

33
Q

Intermittent exercise

A

when an athlete witches between energy systems during exercise

34
Q

Intermittent exercise - football midfield example

A
  • driving past a defender - ATP/PC
  • if over 10s - glycolitic would come into play
  • aerobic system to dribble up pitch
35
Q

factors affecting duration and effectiveness of recovery

A
  • position
  • tactics
  • level of competition
  • structure of game
36
Q

glycolytic system recovery time

A

can take 2+hrs to recover

37
Q

replenishment required after intense training

A
  • ATP/PC stores replenished
  • LA removal
  • glycogen stores replenished
  • 02 in myoglobin replenished
  • electrolyte imbalances adjusted
38
Q

EPOC -an active cool down

A

maintains 02 delivery

39
Q

EPOC -nutrition will

A

increase caffeine , creatine , protein and carb consumption can aid recovery

40
Q

EPOC - strategies and tactics

A

can be manipulated by coach to allow recovery breaks and periods

41
Q

monitoring training - impact on energy systems

A

by monitoring HR , intensity of training can be monitored which ensures training is targeted to correct energy system

42
Q

effect of monitoring - each energy systems effect on the body

A

v high intensity - increased muscle mass - ATP/PC stores

High intensity - increased buffering capacity

Low intensity - increased V02 max

PE Paper 1 (8 decks)

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