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Body in Action(d) Performance . SQA QUESTIONS. Muscle fatigue WYSK. ontinuous. apidly. atigue. C_________ or r________ repeated contraction of muscle results in f________. Muscle fatigue results from a lack of o_______ and a build up of l______ a____. - PowerPoint PPT Presentation
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Body in Action(d) Performance
SQA QUESTIONS
Muscle fatigue WYSK• C_________ or r________ repeated contraction
of muscle results in f________.• Muscle fatigue results from a lack of o_______
and a build up of l______ a____.• When muscles cannot get enough o_______ they
use a__________ respiration to get e______. Anaerobic respiration gives only a l______ energy and releases lactic acid which causes f_______.
• Equation of anaerobic respiration• G________ l_____ acid + little e_____
ontinuous apidlyatigue
xygenactic cid
xygennaerobic nergy
ittleatigue
lucose actic nergy
Exercise and training WYSK• When we exercise our muscles need more
o________.• Our b_______ rate increases so that the lungs can
take in more o_______ and make the blood more o________ rich.
• Our p____ rate increases to make the blood flow round the body f______ to deliver more o_______ to the m________
• With exercise , the p____ rate, b_______ rate and l_____ a_____ levels rise less in an a_______ than in an u________ person
xygenreathing
xygenxygen
ulse aster
xygen uscles ulse reathing
actic cid thletentrained
Recovery time WYSK• Recovery time is the time taken to r_______ to
normal levels of p______ rate, b______ rate and l______ acid.
• Recovery time will be s_______ in an athlete than in a person who is u______.
Training improves the e________ of the lungs and circulation e.g.
The heart increases in s____ and s________ and so p_____ blood round the body f______
The lungs increase in v_______ and can absorb m____ oxygen
eturnulse reathing
actichorter
ntrainedfficiency
ize trength umps aster
olumeore
Time at start of sprint (s)
10
20
30
40
50
X X
XX
X
10
20
30
40
50
Time at start of sprint (s)
75 90
Distance decreases
Repeat the experiment
oxygen
Lactic acid
7080
15 – 9 = 6
180 – 80 = 100
20
110
88,89,90
2080
38
900 ÷ 300 = 312000 ÷ 1200 = 100
Decrease = 900
% decrease = 900 ÷ 1500 = 0.6 0.6 x 100 = 60%