energy systems Flashcards
what are the key points of ATP-PC system
atp broken down by atpase (enzyme) into adp plus pi and energy
phophocreatine broken down by enxyme creatine kinase into phosophogen and creatine and energy
adp plus p resynthesises atp
yield is 1;1
coupled reaction used for anaerobic exercise
in sarcoplasm
adv of atp-pc system
no fatiguing by products
dis of atp-pc system
only lasts 8-10 seconds
key points of anaerobic glycolytic system
fuel source=glycogen
glucogen broken down into glucose
utlises 2atp
glucose is broken down into pyruivc acid by enzyme PFK
resymethesis 4atp making 2atp net
pyruvic acid broken down into lactic acid by enzyme LDH
lactic acid releases hydrogen ion and lactate ion
yield is 2:1
lasts up to 3 mins
adv of anaerobic glycotic system
high intensity
no delay for oxygen delivery
immediate
dis of anaerobic glycotic system
fatiguing by product=lactic acid
short duration
only lasts up to 3 mins
what does ROBLA stand for
rapid onset of blood lactatate accumulation
what is ROBLA
point at which blood lactate rapidly increases
normally at 4mool
what is the difference of OBLA in untrained and trained perfomers
untained-OBLA happens much earlier
due to aerrobic enzymes not operating appropriately
what is a lactate threshold
where there is no longer enough oxygen to oxidise lactic acid
normally at 2mool
key points of the aerobic system
stage 1=glyolysis
(same procedure as anerobic glycotic system)
Pyruvic acid broken down into citric acid by acetyl coa
stage 2=Kreb cycle (mitochondria)
releases 2atp
carbon dioxide
hydogen ions
stage 3=hydrogen ions taken into ETC
releases x34 atp and h20
oxidies it giving us 36 atp net
adv of aerobic system
no fatiguing by prodyucts
co2 helps with bohr shift
long duration
sustainable
dis of aerobic system
low intensity
delay for oxygen delivery
