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GCSE PE > Soc 19 - Short Term Effects of Exercise > Flashcards

Soc 19 - Short Term Effects of Exercise Flashcards

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1
Q

What are the three short term effects of exercise?

A

Muscle, heart and breathing

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2
Q

What is muscle fatigue?

Muscle short term) (ST

A

It is when muscles feel weak, painful and tired

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3
Q

What does muscle fatigue result from?

Muscle ST

A

Usually occurs as a result of anaerobic respiration

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4
Q

What will there be a build up of if there isn’t enough oxygen?
(Muscle ST)

A

There will be a build up of lactic acid

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5
Q

What is a cramp?

Muscle ST

A

A severe form of muscle fatigue which causes the muscles to contract in pain.

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6
Q

What happens to heart when you exercise?

Heart ST

A

It beats faster

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7
Q

What is heart rate?

Heart ST

A

The number of times your heart beats per minute

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8
Q

What is knowing the time taken for your heart to return to resting heart rate after exercise good for?
(Heart ST)

A

To see how fit you are (your fitness levels)

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9
Q

What is stroke volume?

Heart ST

A

The amount of blood pumped by the heart during each beat. - this will increase during physical activity as muscles need more blood

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10
Q

When someone trains regularly what happens to their heart?

Heart ST

A

Heart is more efficient, stroke volume increases, heart rate decreases, heart is bigger in size,thickness and strength.

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11
Q

What is cardiac output?

Heart ST

A

Amount of blood pumped by heart in one min

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12
Q

How do you work out the cardiac output?

A

Stroke volume x heart rate

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13
Q

When exercising you bring in oxygen, what do you get rid of?

Breathing ST

A

You get rid of carbon dioxide

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14
Q

When exercising does depth and rate of breathing increase or decrease?
(Breathing ST)

A

Increases

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15
Q

When you use up more oxygen than you take in when exercising hard what happens?
(Breathing ST)

A

You are in oxygen debt

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16
Q

What is the process called when there is a buildup of lactic acid?

A

Lactate accumulation

17
Q

What does lactate accumulation do to your muscles?

A

It causes them to feel painful and tired

18
Q

How can cramps be affected?

A

If a sportsman is hot, tired, dehydrated or has a poor fitness level

19
Q

Would a trained athlete’s heart rate be low or higher than someone who is not as fit? Why?

A

It would be lower because exercise strengthens the heart muscle meaning it pumps a greater amount of blood with each heartbeat and this results in more oxygen being delivered to the muscles.

20
Q

What is oxygen debt?

A

The amount of oxygen required to remove the lactic acid

GCSE PE (14 decks)

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