Energy Sytems and Energy Sources

Creatine Phosphate

used as an energy source for the anaerobic alactic system

produces quick and short lasting energy

Glucose

used as an energy source for the anaerobic lactic system

broken down ijnto pyruvate

then converted to lactate

produces energy quickly

Glycogen, fats, and proteins

used as an energy source for the anaerobic lactic system

produces energy during exercises

long periods of time

broken down to produce ATP during exercise

ATP is a molecule that provides energy for cellular processes
in the human body.
- broke down of fuels molecules, proteins, fats, and
carbohydrates.

- There is 36 molecules of ATP, and there's three different
processes that work to split ATP

- broke down of fuels molecules, proteins, fats, and
carbohydrates.

Three key nutrients

Fats

Protein

Carbohydrates

- Nutrients are chemical substances obstained from food

- They supply energy, regulate celllalr activity, and also
builld and repair tissues.

- Carbohyrates are the most important
source of energy

- The main functions of carbohyrates are
to provide materials to build cell membranes
and to provide energy use for cells.

- the most abundant
organic substances in nature, and they
are essential for human life.

- Requires oxygen

- Leads to the complete break-
down of glucose.

- Involves many enzymes and
several complex sub-pathways

- occurs without the requirement
of oxygen

- It occurs in two separate metabolic
pathways

- One not involving the breakdown of
glucose

- The other involving the partial
breakdown of glucose

- the first pathways and also the most simple

- it allows for quick and intense muscle
contractions

- this system is referred to as alactic because the
ATP-PC system does not yield lactic acid as a
byproduct

- yields enough ATP for about 10-15 seconds of
strenous effort.

it allows longer bursts of energy

short bursts for longer periods

15 seconds - 3 minutes

doesn't involve any oxygen

involves the partial breakdown of glucose with lactic
acid as a byproduct

2 molecules of ATP for every molecule of glucose

36 molecules per molecule of glucose

complete breakdown of glucose

Long duration

120 seconds (2 minutes) or longer

requires a large amount of oxygen

slow twitch muscle fibre

there are dark or red in colour

much better for long distances rather than short distances

able to maintain a lower level of tension for
longer distances

Type 1 fibre

Generate energy slowly

fatigue resistant

primarily depend on aerobic processes

fast twitch muscle fibre

Type 2A fibre

Muscle fibres are the immediate type muscle fibres

allows high speed release as well as glycotic capacity

Type 2B fibre

share oxygen

high levels of enzymes required

quick conctractions requiring oxygen

More pale in colour

much better for short distances rather than long distances, the opposite of slow twitch

slow twitch muscle fibres are high in myoglobin and ideal
for endurance

fast twitch muscle fibres are low in myglobin and more
adapted to short bursts of energy

a protein oxygen storage unit that delievers oxygen to the muscles