Zusammenfassung der Ressource
B1: FITNESS AND HEALTH
- Health and Fitness
- Being healthy means being free from
infectious disease, together with having
total physical and mental well being.
- Being fit relates to how much physical
activity you are capable of doing and
how quickly your body recovers.
- Exercises that are measurable: STRENGTH, STAMINA, FLEXIBILTY, AGILITY AND SPEED.
- CARDIOVASCULAR EFFICIENCY:- How well heart
copes with aerobic exercise and how quick it
recovers after.
- Pulse
- Each time heart beats, the
arteries pulse (throb) this can be
felt at the wrist or neck.
- Pulse is measure in BPM, a normal rate is between 60-100bpm.
- Fitness is normally assessed by measuring
how quickly pulse rate RECOVERS. The
fitter the person, the faster the recovery
time.
- The Circulatory System
- The HEART pumps blood around the
body in BLOOD VESSELS, called
ARTERIES, CAPILLARIES and VEINS.
- The heart is a MUSCULAR pump. It relaxes and
contracts, so it's always under PRESSURE.
- This ensures cells get Oxygen for
respiration and removes Carbon Dioxide as
waste product
- Blood Pressure
- This is a measure of THE FORCE OF
BLOOD PER UNIT AREA as it flows
through the arteries.
- It is measure in mm Hg (millimetres of mercury)
- SYSTOLIC PRESSURE:- When
heart muscle contracts, forcing
blood into arteries of body
- DIASTOLIC PRESSURE:- When heart
relaxes, pressure in arteries drops.
- Healthy Blood Pressure
- Normal Blood Pressure: 120/80mmHg
- Regular AEROBIC EXERCISE strengthens
the heart and helps maintain a normal
blood pressure.
- Factors that increase blood pressure:
- HIGH STRESS LEVELS
- SMOKING - Carbon Monoxide reduces ability for RBC's
to carry Oxygen, so heart has to beat faster and also
Nicotine affects heart making it beat faster
- EXCESS ALCOHOL
- EXCESS WEIGHT - due to
lack of exercise and poor
diet, puts a strain on heart.
- EATING HIGH LEVELS OF SALT
- EATING HIGH LEVELS
OF SATURATED FATS -
this builds up
CHOLESTEROL
- Long-term high blood pressure can weaken the
blood vessel and burst and can cause permenant
brain or kidney damage
- Low blood pressure can be a problem too as blood does not cirlculate easily so some parts of the body do not get Oxygen, this can lead to:
- Diziness and Fainting and
you can get cold hands and
feet