The CV system
- Created by: ellie chawner
- Created on: 24-03-16 12:39
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- The CV system
- The (long term) effects of regular exercise
- Decreased resting heart rate
- The heart of a fit person beats less times because it get stronger with training
- A faster heart recovery rate
- Increased stroke volume
- The volume of blood pumped out of the heart in 1 beat
- This will increase at both rest and work because the heart becomes more efficient a result of regular training
- The volume of blood pumped out of the heart in 1 beat
- Cardiac output
- Decreased resting heart rate
- Rest and Recovery
- Rest is essential to recovery and to allow the body to adapt
- Rest allows the heart to grow in size and thickness
- Rest allows the number of capilleries to increase
- An expamle: two days training, then a days rest, followed by three days training, and another rest day. In total this is five exercise sessions and 2 days rest
- Rest is essential to recovery and to allow the body to adapt
- Diet and the cardio- vascular system
- High cholesterol: cholesterol is a fatty substance carried in the blood by lipoproteins.
- Low density lipoprotein(LDL)
- Referred to as 'bad cholesterol'
- Consists mainly of fat
- Is the major cause of cholesterol in the blood
- Blockagesin the blood vessels mean that the heart has to work harder, resulting in an increase in blood pressure.
- Can lead to a build-up of plaque which can restrict blood flow
- Is the major cause of cholesterol in the blood
- High density lipoprotein(HDL)
- Referred to as 'good cholesterol'
- Contains more protein than fat
- Carries cholesterol away from the arteries to the liver, which removes it from the body
- Foods rich in HDL include; fruit, vegetables whole grains and legumes (e.g peas and beans)
- Your 5 a Day
- High cholesterol
- Caused by having a diet high in LDL
- Cholesterol is only a problem when the levels in the blood are too high.
- This can cause a build up of fatty deposits in the arteries
- Heart problems
- Increase the risk of coronary heart disease.
- Narrow the arteries
- Heart attacks
- Caused by having a diet high in LDL
- Low density lipoprotein(LDL)
- High cholesterol: cholesterol is a fatty substance carried in the blood by lipoproteins.
- Recreational Drugs
- Smoking (nicotine) (tobacco)
- Raises blood pressure because it releases adrenaline
- Reduces HDL levels (good cholesterol)
- Increases blood intensity
- Can lead to blood clots with cause heart attacks and strokes
- Alcohol
- Raises blood pressure
- Binge drinking and too much alcohol can lead to long term effects
- Raises blood pressure
- Smoking (nicotine) (tobacco)
- The immediate affects of exercise
- Body temperature increase
- Muscles are working hard which generates heat
- The average body temperature is between 36.4'c and 37.2'c
- You sweat
- Your body automatically tries to cool you down when you get hot
- Hot conditions increase sweating
- Sweat (salt and water) comes out of the pores in the skin and evaporates when it reaches the surface.
- Salt and water need to be replaced
- Cramps
- Less urine produced
- Faint or collapse
- For example Marathons have water and energy stations in case of this
- Salt and water need to be replaced
- Your body automatically tries to cool you down when you get hot
- Muscles begin to ache
- The muscles need energy and oxygen
- Energy comes from food which is converted into glucose
- Other Factors
- Stressful Situations
- Can cause more adrenaline
- Adrenaline
- This is a hormone released in anticipation of exercise
- Adrenaline
- Can cause more adrenaline
- Eating
- Adrenaline
- This is a hormone released in anticipation of exercise
- Stressful Situations
- Body temperature increase
- The (long term) effects of regular exercise
- Breathing becomes faster and deeper
- Need more oxygen to your lungs
- The immediate affects of exercise
- Body temperature increase
- Muscles are working hard which generates heat
- The average body temperature is between 36.4'c and 37.2'c
- You sweat
- Your body automatically tries to cool you down when you get hot
- Hot conditions increase sweating
- Sweat (salt and water) comes out of the pores in the skin and evaporates when it reaches the surface.
- Salt and water need to be replaced
- Cramps
- Less urine produced
- Faint or collapse
- For example Marathons have water and energy stations in case of this
- Salt and water need to be replaced
- Your body automatically tries to cool you down when you get hot
- Muscles begin to ache
- The muscles need energy and oxygen
- Energy comes from food which is converted into glucose
- Other Factors
- Stressful Situations
- Can cause more adrenaline
- Can cause more adrenaline
- Eating
- Stressful Situations
- Body temperature increase
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