part b sac after laboratory report

Question 1

what is the ATP-PC energy system

Answer 1

the ATP-PC energy system is the fastest speed of ATP produced (RATE), only lasts 0-10 seconds and has the smallest amount of ATP produced (YEILD)

Question 2

main cause of fatigue for the ATP-PC energy system

Answer 2

the main cause of fatigue is that CP (creatine phosphate)

Question 3

how does depletion of cp lead to fatigue

Answer 3

cp stores deplete as there is limited supply, when cp depletes the body transitions to the anaerobic glycolysis which rebuilds atp at a slower rate, the slower rate is caused by the more complex chemistry required to breakdown glycogen, slower rate of ATP production causes slower muscles contractions leading to fatigue

Question 4

best recovery method for ATP-PC energy system

Answer 4

passive recovery method
whatever is replenished gets stored, not moving means cp replenished can be stored rather then used if you were moving

Question 5

what is Anaerobic Glycolysis energy system

Answer 5

the anaerobic energy systems is a fast speed of ATP produced (RATE), lasts between 10-75 secs has the small amount of ATP produced (YEILD)

Question 6

main cause of fatigue for the Anaerobic glycolysis energy system

Answer 6

accumulation of H+ions

Question 7

how does accumulation of H+ions lead to fatigue

Answer 7

increase in acidity which leads to decrease in ph, and slows down glycolytic enzymes, slows muscle contraction and a slow rate of ATP rebuilding, after the 75 seconds it starts to transition to the Aerobic energy system

Question 8

best recovery method for the Anaerobic energy system

Answer 8

active recovery, maintains blood flow to muscles therefore maintains o2 to muscles, keep doing the same activity at lower intensity for 5-10 mins, it helps by maintaining o2 to working muscles and remove waste products and reduce venous pooling

Question 9

what is the Aerobic energy system

Answer 9

the aerobic energy system is the slowest speed of ATP produced (RATE), it lasts from 75 secs onwards and has the largest amount of ATP produced (YEILD)

Question 10

what is the first cause of fatigue for the Aerobic energy system

Answer 10

Thermoregulation

Question 11

how does aerobic energy system thermoregulation lead to fatigue

Answer 11

vasodilate blood vessels to skin surface to get rid of heat = vasoconstrict blood vessels to muscles leading to less blood/o2 to muscles.
sweat = lose water in blood leads to thicker blood , harder for heart to pump which leads to less o2 to muscles, this therefore leads to fatigue

Question 12

recovery for thermoregulation

Answer 12

hydrate to cool down

Question 13

second cause of fatigue for aerobic energy system

Answer 13

glycogen depletion

Question 14

how does glycogen depletion cause fatigue in aerobic energy system

Answer 14

starts to fatigue at 90-120 mins, then it transitions to triglycerides (fats) which takes more o2 to break down fats, therefore slows down, slower muscle contractions as ATP rebuilt at a slower rate

Question 15

recovery method for glycogen depletion in aerobic energy system

Answer 15

refuel; eat carbohydrates, combine protein which speeds up absorption

Question 16

what is the lactate inflection point (LIP)

Answer 16

LIP is the last point where lactate entry into and removal from the blood are balanced

Question 17

exercise intensity BELOW lactate inflection point

Answer 17

lactate produced by the working muscles is abled to be cleared (oxidized) at a similar rate by the liver and muscles
lactate concentration does not rise

Question 18

exercise intensity ABOVE lactate inflection point

Answer 18

causes blood lactate levels to rise exponentially
causes more rapid onset fatigue due to increased contribution from the anaerobic glycolysis energy system
H+ions start to accumulate rapidly leading to fatigue
the higher the intensity of exercise beyond the LIP the more rapid the onset of fatigue