week 9 training

Question 1

what 2 things from diet effect fatigue and performance

Answer 1

cho and hydration

Question 2

what cns functions effects performance

Answer 2

arousal and motivation

Question 3

what strength and skill effect performance

Answer 3

practice, natural environment , body type and fibre types

Question 4

how does environment effect performance

Answer 4

altitude, heat and humidity

Question 5

what anaerobic factors effect performance

Answer 5

PC, glycolysis

Question 6

what aerobic factors effect performance

Answer 6

vo2 max, Q, o2 delivery, o2 extraction and mitochon.

Question 7

what do the factors depend on

Answer 7

the performance itself

Question 8

what is fatigue

Answer 8

inability to maintain power output or force repeated muscle contraction s which is reversible with rest

Question 9

what is central fatigue

Answer 9

cns -

Question 10

what is peripheral fatigue

Answer 10

neural, mechanical and energetics of contraction factors

Question 11

2 factors of centeral fatigue

Answer 11

reductions in motor units activated and firing frequency

Question 12

cns arousal can alter the state of fatigue by facilitating

Answer 12

motor unit recruitment and increasing motivation , or physical and or mental diversion

Question 13

excessive overtraining can cause

Answer 13

reduced performance and prolonged fatigue as well as brain serotonin to dopamine ratio activity

Question 14

fatigue is a conscious process and exercise will persist if

Answer 14

The motivation is greater than perceived exertion

Question 15

neuromuscular junction is a place for fatigue yes or no

Answer 15

no

Question 16

where is the site for fatigue

Answer 16

sarcolemma and transverse tubules

Question 17

explain the basic concept of fatigue

Answer 17

the inability of na and k to maintain action potential amplitude and frequency

Question 18

what can be imporved by training

Answer 18

na + k levels persistent during fatigue within the exercise

Question 19

how does exercise help wrork through fatigue

Answer 19

block t tubules and reduced calcium release

Question 20

peripheral fatigue mechanical factors depends on what 3 things

Answer 20

arrangement of myosin and actin, ca2 binding to troponin and atp availability

Question 21

high amounts of what contribute to fatigue

Answer 21

H+

Question 22

How does hydrogen contribute to fatigue

Answer 22

reduce force across bridges and inhibit ca2 release from SR and less force at ca2 concentration

Question 23

phosphate accum, inhibiting maximal force, reduced cross bridge binding to actin and ca2 release from sr is effected from what

Answer 23

atp imbalance for fatigue and atp requirements and atp generating capacity

Question 24

peripheral fatigue means that

Answer 24

the rate of atp utilization is slowed faster than rate of atp generation

Question 25

what is radicles

Answer 25

molecules with an unpaired outer orbital electron

Question 26

exercise promotes muscle ....

Answer 26

muscle free radicle production

Question 27

radicle production contributes towards

Answer 27

fatigue due to damage to proteins and lipids

Question 28

radicles effect the what pump

Answer 28

sodium and potassium , due to disruption of k homeostasis

Question 29

antioxidant supplements do not stop

Answer 29

fatigue

Question 30

ultra short events is what duration

Answer 30

10 seconds under

Question 31

ultra short events uses what muscle fibre types

Answer 31

2

Question 32

what 3 things are important for ultra short duration events

Answer 32

motivation , arousal and skill

Question 33

what is the primary energy for ultra short event

Answer 33

anaerobic glycolysis

Question 34

anaerobic glycolysis causes an increase in what

Answer 34

hydrogen and lactate

Question 35

h+ and lactate causes an increase in what

Answer 35

ca2 interference of binding with troponin and atp production

Question 36

how long is moderate duration exercise

Answer 36

3-20 min

Question 37

what percent of atp is generated aerobically at 3 min

Answer 37

60%

Question 38

what percent of atp is supplied aerobically at 20min

Answer 38

90%

Question 39

a high vo2 max is good for who

Answer 39

moderate distance

Question 40

what does a high vo2 max show

Answer 40

high stroke volume and arterial o2 as well as haem and o2 inspiration

Question 41

which muscle fibres are recruited

Answer 41

2x / 2a

Question 42

how long is intermediate events

Answer 42

21-60 min

Question 42

where does h+ come from

Answer 42

high levels of energy expenditure near vo2 max

Question 43

what threshold of vo2 max is intermediate

Answer 43

upper 90% vo2 max

Question 44

factors effecting intermediate

Answer 44

hydration, heat, lactate, environmental factors

Question 44

what is the duration of long events

Answer 44

1-4 hours

Question 45

factors that will impact long events

Answer 45

environment more than inter. Cho levels and hydration levels , electrolytes and diet

Question 46

why should endurance athletes adjust cho levels

Answer 46

muscle and liver glycogen decline and maintain cho oxidation

Question 47

is maximal o2 uptake important in endurance

Answer 47

yes - needing a strong vo2max of 80ml kg at 80% vo2 max

Question 48

FACTORS EFFECTING ULTRA ENDURANCE

Answer 48

Limited endurance, metabolic response, hyponatremia, other factors