exercise physio

Question 1

maximum shortening velocity of a fibre is dependent on its type (I or II)

Answer 1

type I - slow twitch
type II - fast twitch

Question 2

type I fibre is mostly red/white

Answer 2

red

Question 3

type II fibre is mostly red/white

Answer 3

white

Question 4

type I - slow twitch - ideal for …

Answer 4

low power endurance activity

Question 5

type II - fast twitch - ideal for …

Answer 5

high power short bursts of activity

Question 6

wide range of exercise types require a different balance of ….. which can drive different physiological …

Answer 6

energy systems, responses

Question 7

long distance running - only energy system that fuels long endurance requires … to generate ATP by oxidative phosphorylation

Answer 7

oxygen

Question 8

O2 delivery - incremental exercise

Answer 8

increasing intensity, increased O2 consumption

Question 9

incremental exercise is how …. fitness is assessed

Answer 9

cardiorespiratory

Question 10

fuel for long distance running

Answer 10

mixture of fat and glycogen oxidised

Question 11

which produces ATP at a faster rate - glycogen metabolism or fat metabolism

Answer 11

glycogen metabolism

Question 12

fuel for long distance running can become glycogen …..

Answer 12

depleted

Question 13

middle distance running - glycogen won’t be depleted, higher work rates maintained. what is the primary fuel source

Answer 13

glycogen - fat metabolism can’t keep up with ATP demands

Question 14

middle distance running - increased rate of …. and increased lactate + H+ production

Answer 14

glycolysis

Question 15

metabolite accumulation leads to …

Answer 15

muscle fatigue

Question 16

what is a useful performance/fitness measure

Answer 16

measuring LT - lactate threshold

Question 17

LT indicates work rate when …. production increases and greater reliance on …. stores

Answer 17

metabolite, glycogen

Question 18

…. accumulating limits running speeds over middle/long distance sprints

Answer 18

metabolite

Question 19

work rates achievable during a long sprint are not ….

Answer 19

maximal

Question 20

what does maximal sprint activity require

Answer 20

faster rate of ATP production than ATP produced by glycolysis

Question 21

short sprint - exercise less than 10 seconds can be powered entirely from ….

Answer 21

anaerobic sources

Question 22

anaerobic sources - rapid ATP supply include muscle ….. stores and ……. system

Answer 22

ATP, phosphocreatine system

Question 23

short sprint - muscle …… store affects sprint/power performance

Answer 23

pcr store

Question 24

short sprint - how are larger type II muscle fibres beneficial for sprinting/power performance

Answer 24

greater maximal force

Question 25

short sprint - how are faster type II muscle fibres beneficial for sprinting/power performance

Answer 25

greater maximal shortening velocity

Question 26

force x velocity =

Answer 26

power

Question 27

training adaptations - endurance training

Answer 27

enhances O2 delivery and utilisation

Question 28

training adaptations - strength/power training

Answer 28

enhances maximal muscle power output

Question 29

strength/power tests assess ..

Answer 29

maximal force or power output

Question 30

most common endurance tests assess ..

Answer 30

VO2 max - maximum rate of O2 delivery/utilisation in working muscles

Question 31

endurance tests assess LT -

Answer 31

work rate where blood lactate increases