Soc 18- Aerobic, Anaerobic Exercise And Energy Systems Flashcards
Glucose
major source of energy for most cells in the body.
Aerobic respiration
the process of releasing energy from glucose, using oxygen.
Anaerobic respiration
the process of releasing energy from glucose, without oxygen,
Aerobic exercise
at a moderate intensity allowing the body time to utilise oxygen for energy production and to work for a continuous period, eg. long-distance events,
Lactic acid
colourless acid
produced in muscle tissues
during strenuous exercise
when the body is exercising anaerobically at high intensity.
Cramp
painful, involuntary contraction of a muscle, usually caused by fatigue.
Anaerobic exercise
anaerobic activities are usually short but intense e. na lifting weiahts and jumping.
Glycogen
that serves as a primary form of stored glucose in out body
Arrobic respiration equation
Glucose + Oxygen -> Carbon dioxide + Water + Energy
Anaerobic respiration equation
Glucose -> Energy + Lactic acid
What foods does energy come from
Energy comes from a range of different foods, including fats and carbohydrates
Carbohydrates
the main energy source for both high-intensity
(anaerobic) exercise and moderate-intensity (aerobic) exercise
Fats
provide energy for only moderate-intensity (aerobic) exercise
for long periods over 2 hours
Fats characteristics
Fats usually provide most of the body’s energy needs
• When you eat fat it is broken down into fatty acids, which are absorbed
into your blood and delivered to your cells
• Any fatty acids that are not needed straight away can be stored in fat cells
• Fats are found in butter, margarine and cooking oils, as well as in foods
such as bacon, cheese, fish and nuts
• Your daily intake of fats should be no more than 30% of your total diet
Carbohydrates characteristics
Your body’s cells uses carbohydrates more easily than fat
• Carbohydrates can only be stored in small amounts - enough to last a day or two - so
your body tends to use them first for energy
• When you eat carbohydrates, they are broken down into glucose or glycogen, which can
be absorbed through the walls of your small intestine and into the blood
• Glucose will pass into the blood, be transported to the liver and then circulated around the
body
• Once your cells have used as much glucose as they need, some of the excess is stored in
the liver, ready to be distributed if your blood glucose levels get too low.
• The rest can be turned into fat for long term storage