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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
LDH
enzyme that breaks down pyruvic acid into lactic acid if no 02 is available
26
Krebs cycle - stage 1
Acetyl COA combines with oxaloacetic acid to produce citric acid
27
Krebs cycle - stage 2
citric acid is oxidised and C02 is released as a bi product - 2ATP released
28
Krebs cycle - stage 3
hydrogen atoms are removed from the compound and transported to the kristae by hydrogen carriers - NAD and FAD
29
The electron transport chain
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
energy source for ATP-PC
phosphocreatine
31
energy source for glycolitic system
glycogen/glucouse
32
enegry source for aerobic
glycogen/fat
33
Intermittent exercise
when an athlete witches between energy systems during exercise
34
Intermittent exercise - football midfield example
- driving past a defender - ATP/PC - if over 10s - glycolitic would come into play - aerobic system to dribble up pitch
35
factors affecting duration and effectiveness of recovery
- position - tactics - level of competition - structure of game
36
glycolytic system recovery time
can take 2+hrs to recover
37
replenishment required after intense training
- ATP/PC stores replenished - LA removal - glycogen stores replenished - 02 in myoglobin replenished - electrolyte imbalances adjusted
38
EPOC -an active cool down
maintains 02 delivery
39
EPOC -nutrition will
increase caffeine , creatine , protein and carb consumption can aid recovery
40
EPOC - strategies and tactics
can be manipulated by coach to allow recovery breaks and periods
41
monitoring training - impact on energy systems
by monitoring HR , intensity of training can be monitored which ensures training is targeted to correct energy system
42
effect of monitoring - each energy systems effect on the body
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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