Energy supply

Question 1

aerobic equation

Answer 1

glucose + oxygen –> carbon dioxide + water (+energy)

Question 2

anaerobic equation

Answer 2

glucose –> lactic acid (+energy)

Question 3

aerobic respiration

Answer 3

• the process of produced energy involving oxygen
• produces energy for a long time, but slowly
• when exercising intensity increases aerobic respiration can no longer meet the energy demand
• high duration
• low intensity

Question 4

anaerobic respiration

Answer 4

• the process of producing energy without oxygen
• produces energy quickly, so can meet demands of high intensity exercise
• produces small amount of energy, so can be sustained for a short period
• high intensity
• low duration

Question 5

recovery

Answer 5

• when you exercise you produce lactic acid
• lactic acid build up causing fatigue and must be removed, so muscles function correctly again

Question 6

oxygen debt

Answer 6

The amount of oxygen needed to break down the lactic acid and return the body to normal.

Question 7

EPOC

Answer 7

The process of taking in additional oxygen to remove the lactic acid created by anaerobic respiration

Question 8

short term effects to exercise

Answer 8

• heart rate increases - more oxygen to muscles
• breathing rate increases - more oxygen to bloodstream
• temperature increase - muscle loses function when too hot
• reddening of skin - control temperature
• sweating - controls body temp
• fatigue - when body funs out of glucose and produces lactic acid
• nausea - feeling sick

Question 9

long term effects to exercise

Answer 9

• hypertrophy - muscle walls of the heart get thicker and stronger as a result of training
• bradycardia - slower than normal heart rate