Transcript Energy Systems File

What is ATP?
• ATP (Adenosine Tri Phosphate) is a chemical
produced in the body, responsible for
producing energy for muscle contraction
• When ATP is broken down, energy is released
• The nutrients we extract from food
(carbohydrates, proteins, fats) are used to
produce ATP
• In the body there are three main pathways for
the breakdown of ATP to make energy.
• These systems are dependent on the type of
activity being performed.
• The three pathways are:
- ATP-CP
- Anaerobic (lactic acid)
- Aerobic
ATP-CP System
• ATP (chemical produced in the body that helps
deliver energy
• CP (creatine phosphate – a naturally produced
chemical stored in the muscles)
• Energy for immediate activity
• Uses the ATP already stored in the muscle cells
• Main source of energy for short, explosive bursts
(0-10 secs)
• CP stores replace themselves after approx 2 mins
rest
Lactic Acid System
• The breakdown of glycogen in the absence of
oxygen for energy
• Main source of energy is glycogen (found in
carbohydates)
• Energy for short-term high-intensity exercise
• Because this system does not require oxygen
to burn carbohydrates, significant amounts of
lactic acid can build up
• Lactic acid causes muscle soreness and fatigue
(the next day it can be muscle stiffness)
• When the heart and lungs cannot deliver
enough oxygen to the muscles to produce
energy aerobically, the body switches to
anaerobic production
Aerobic System
• The breakdown of glycogen in the presence of
oxygen for energy
• Long-term, low-intensity activity
• Main source of energy is carbohydrates, fats
• Because this system requires oxygen to burn the
carbohydrates and fats, lactic acid does not build
up (but can do, when anaerobic system is
suddenly required again, eg sprint, when heart
and lungs are unable to supply enough oxygen to
meet energy demands)
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100m sprint – lactic acid
Marathon – aerobic
Triple jump – ATP-CP
400m – lactic acid
Long jump – ATP-CP
50 km walk – aerobic
800m – lactic acid
Javelin – ATP-CP
High jump – ATP-CP
Shot put – ATP-CP
Pole vault – ATP-CP
Discus – ATP-CP
3000m – aerobic
• Complete energy systems handout
Energy systems involved in basketball
• The major system used in a game of basketball
is the anaerobic lactic acid system, meaning
the activity is at a shorter duration, but at a
higher intensity.
• The energy is supplied through the burning of
carbohydrates, which builds up lactic acid,
which eventually causes performance to
decrease.
• The aerobic system allows you to play for a
long period of time, running up and down the
court.
• Anaerobic lactic acid system affects the way
you play the game as in basketball you repeat
multiple high intensity activities with minimal
rest period of short quick bursts of runs and
jumps, followed by sprints to the other end of
the court.
• Although rests are present, stretches of
continuous play can last anywhere from 2 to 3
minutes.
Basketball training
• What sort of training would you do for
basketball over a 2 month period?
- Write your ideas down in your books
Continuous training
• To improve cardiorespiratory endurance and
muscular endurance
Weight training
• To develop muscular strength, muscular
endurance and power
Interval training
• To improve the lactic acid energy system