chapter 1c Flashcards
(43 cards)
What is aerobic exercise?
Exercise with oxygen, usually relatively gentle that can be maintained for a long period of time
What is anaerobic exercise?
exercise without oxygen, involves high intensity actions that can only be continued for a short period of time
Name some examples of anaerobic exercise
jumping, weightlifting, stress training, sprinting
Name some examples of aerobic exercise
jogging, brisk walking, rowing, cycling, skiing and swimming, marathon
Why can team games be aerobic and anaerobic?
There will be times when the exercise is gentle (aerobic) and times when the performer is sprinting and the exercise is strenuous (anaerobic)
What is lactic acid?
Waste product from anaerobic exercise
What is oxygen debt?
Temporary oxygen shortage in the body due to strenuous exercise
What is EPOC?
EPOC (excess post-exercise oxygen consumption) is the rate of oxygen consumption after exercise has ended compared with the resting rate.
What is the formula for aerobic exercise?
glucose + oxygen -> energy + carbon dioxide + water
What is the formula for anaerobic exercise?
Glucose -> energy + lactic acid
What can lactic acid cause?
Cramps, fatigue, muscle pain, causes exercise to slow down and eventually stop
Is the marathon an anaerobic or aerobic event?
Aerobic, uses oxygen, long distance/duration, low intensity
Glucose + oxygen = energy + carbon dioxide + water
Why do we get oxygen debt after strenuous exercise?
Use of anaerobic exercise- need to repay oxygen not used
What is the function of EPOC?
remove lactic acid
What are the immediate effects of exercise?
-hot/sweaty/red skin
-increase in depth and frequency of breathing
-increased heart rate + stroke volume
What are short term effects of exercise?
Tiredness/fatigue due to muscle swelling.
Light headedness.
Nausea
DOMS
What is DOMS and what causes it?
Delayed Onset Muscle Soreness: soreness you feel following exercise because of damage to muscle (micro tears)
What are long term effects of exercise?
-body shape may change
-improvements in specific components of fitness
-build muscle strength
-improve muscular endurance
-improve speed
-improve suppleness
-build cardio-vascular endurance
-improve stamina
-increase in the size of the heart (hypertrophy)
-lower resting heart rate (bradycardia).
What are long term effects of exercise?
-body shape may change
-improvements in specific components of fitness
-build muscle strength
-improve muscular endurance
-improve speed
-improve suppleness
-build cardio-vascular endurance
-improve stamina
-increase in the size of the heart (hypertrophy)
-lower resting heart rate (bradycardia).
What is nausea?
Feeling of sickness during/after exercise
What is a cramp and what causes it?
Involuntary contraction of a muscle, caused by fatigue or muscle strain. often linked to dehydration and loss of minerals due to excessive sweating
What is fatigue? What causes it?
inability to maintain power output or force during repeated muscle contractions. Caused by build up of lactic acid and excess fluids
What is a cool down? Why is it important?
Undertaken after exercise to speed up recovery (eg. Walking, jogging, stretches). It is important as it helps decrease body temp and removed waste products like lactic acid from the working muscles.
What benefits does a cool down have?
Removal of waste products, including lactic acid
Circulation of blood and oxygen
Normal length of muscle
Risk of muscle soreness and stiffness
Heart rate
Breathing rate
Temperature