fatigue

Question 1

acute fatique

Answer 1

decrease in maximal force or power production in response to contractile activity

Question 2

anaerobic pathways for ATP

Answer 2

pcr and glycolysis

Question 3

Pcr re-synthesis of ATP depends on

Answer 3

creatine levels

Question 4

type 1s use

Answer 4

mitochondria and some glycolsis and PCr

Question 5

fuel used for type 1s

Answer 5

fat

Question 6

glycogen depletion rate for type 1 fibers

Answer 6

slow

Question 7

type 2 use

Answer 7

both mitochondria and glycolysis (some pcr)

Question 7

fuel used for type 2

Answer 7

both cho and fat but mainly CHO

Question 7

type 2x use

Answer 7

Pcr and glycolysis

Question 8

glycogen depletion rate for type 2x

Answer 8

very fast

Question 9

glycogen is depleted more from which fiber

Answer 9

fiber 2

Question 10

traid is

Answer 10

the area of ATP demand/use

Question 11

where do we use ATP

Answer 11

CA Pump
NA - K pump
myosin ATPase
SR
AP

Question 12

what pathway is relied upon for high intensity exercise

Answer 12

glycolysis

Question 13

if glycolysis isnt produced fully then

Answer 13

fat becomes ATP source but it is too slow for high intensity exercise

Question 14

the 3 things involved in the triad is

Answer 14

1, membrance - Ca pump and Na-K pump
2. SR Ca pump
3. sarcomere - myosin ATPase

Question 15

if atp cant resynthesize fast enough, what builds up

Answer 15

Pi

Question 16

excessive build up Pi inhibits

Answer 16

cross bridge cycling by reducing myofibillar sensitivity to CA

Question 17

extra Pi seeps into

Answer 17

SR and binds to CA so that it can leave to initiate cross bridge cycling
-so troponin cant bind to CA

Question 18

Ca apperance stimulates

Answer 18

glycogenolysis

Question 19

low Ph

Answer 19

high amount of H
-acidic

Question 20

high ph

Answer 20

low amount of H
-basic

Question 21

what does LDH do

Answer 21

converts pyruvate to lactate

Question 22

hydrogen is being produced when

Answer 22

pyruvate is being converted to lactate and when ATPase releases energy from ATP

Question 23

lower ph inhibits

Answer 23

bioenergetic enzymes = decrease in ATP production

Question 24

ROS signals ____ which stimulates

Answer 24

AMPK, PGC1-a

Question 25

ROS inhibits _

Answer 25

force production because of too much NO, and superoxide production

Question 26

what affects ROS the most

Answer 26

level of intensity

Question 27

endurance exercise

Answer 27

prolonged steady state exercise performed for durations between four minutes and four hours, usually at the highest power output for the duration

Question 28

oxidative pathways for ATP (complete oxidation of glucose

Answer 28

glycolysis, pdh, krebs, ETC

Question 29

fiber types recruited in endurance training

Answer 29

types 1 and type 2a

Question 30

pathways used in endurance training

Answer 30

mitochondria and glycolysis

Question 31

moderate to low intensity exercise uses

Answer 31

fat instead of glycogen

Question 32

if ATP is resynthesized well then

Answer 32

-Pi doesn't accumulate -Ca flow is uniterrupted -Ros doesnt accumulate -lactate and ATPase activity stays lower -H doesnt accumulate

Question 33

when glycogen gets too low

Answer 33

-Atp supply becomes compromised - dont have enough fuel for glycolysis - poor CA pump performance - leads to reduced calcium in the sarcoplasm = less glycogenolysis -poor NA-K pump performance - wont have any AP -poor delivery of Atp to sarcomere

Question 34

CHO recommendations for athletes

Answer 34

3-12 g cho/kg bm/ day

Question 35

light activity is __and needs ___ amount of CHO

Answer 35

low intensity or skill-based exercise -need 3-5 g/kg/day

Question 36

moderate activity is __and needs ___ amount of CHO

Answer 36

moderate exercise about 1 hour and needs 5-7 g/kg/day

Question 37

high intensity is __and needs ___ amount of CHO

Answer 37

endurance program 1-3h a day moderate to high intensity and needs 6-10 g/kg/day

Question 38

very high intensity is __and needs ___ amount of CHO

Answer 38

extreme commitment 4-5h a day moderate-high intensity and needs 8-12 g/kg/day

Question 39

if you eat CHO during exercise then

Answer 39

body will burn more dietary CHO and less glycogen

Question 40

for 1-2 hours, how much dietary CHO should be consumed

Answer 40

30 g/ hour

Question 41

for 2-3 hours, how much dietary CHO should be consumed

Answer 41

60 g/ hour

Question 42

for > 2.5 hours, how much dietary CHO should be consumed

Answer 42

90 g/hr

Question 43

increase in triggers lead to

Answer 43

-mitochondrial biogenesis -angiogenesis -CHO oxidation enzyme (glycolysis, mitochondria)

Question 44

to increase true anaerobic capacity an athlete needs to increase

Answer 44

PCr -by eating meat - you get a supply of creatine