impact of activity on health

• What is CHD and causes

  restriction of blood flow in arteries to heart due to fatty deposits allowing tissue to die

  - smoking

  - poor diet
• 3 positive impacts of activity on health

  - reduces cholesterol

  - lowers blood pressure

  - lowers risk of strokes / heart attacks
• Define diastolic and systolic blood pressure

  Diastolic - blood pressure when heart relaxes

  Systolic - blood pressure when heart contracts
• Atherosclerosis


  process of fatty materials clogging the arteries restricting blood flow
• Ischemic and hemorrhagic strokes

  Ischemic strokes - occur from blockages in arteries leading to blood loss to brain

  Hemorrhagic - stroke caused by weakened vessels bursting
• Define high and low density lipoproteins

  HDL - good cholesterol which removes LDL from arteries and protects artery walls

  LDL - Bad cholesterol that blocks arteries
• What's blood pressure


  Force of blood against artery walls

  - high blood pressure damages artery walls
• Hypertension


  Higher blood pressure over 140/90
• How does regular exercise reduce risk of heart disease

  - heart bigger and stronger ( hyper trophy )

  - maintains flexibility of blood vessels ensuring good blood flow
• Inc HDL levels do what

  - transport excess cholesterol to liver

  - reduce risk of heart disease

  - protect artery walls against LDL cholesterol