Energy Systems
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What are the three energy systems?
ATP-PC Lactic acid Aerobic
What are the two different types of muscles?
Voluntary- you cannot control them. eg. Cardiac muscle Involuntary- you can control them. eg. Quads
What is interplay?
All of the three systems working together but at different intensity’s
Slow twitch
Last for longer periods of time. eg. Long distance runner, marathon runner
Fast twitch
Foe explosive sports. eg. Sprinting, field events. But can’t sustain endurance as long in muscles. They are quickly fatigued.
What are the two types of muscle fibres?
Slow twitch- dark in colour Fast twitch- light in colour Everyone is born with one of the types of muscle fibres
ATP-CP Component of fitness, time of effectiveness, intensity, activities/sports, muscle fibre type, fitness tests, speed of muscle contraction, and fatigue
Component if fitness: muscular strength,power,reaction time, speed Time of effectiveness: first 10 seconds Intensity: maximal, greater than 95% Activities/sports: 100m sprint, shot put, weight lifting, high/long jump Muscle fibre type: fast twitch (white) Fitness tests: vertical jump, bicep curl Speed of muscle contraction: very rapid Fatigue: fast
Lactic acid Component of fitness, time of effectiveness, intensity, activities or sports, muscle fibre type, fitness tests, speed of muscle contraction, and fatigue
Component of fitness: muscular endurance Time of effectiveness: 10-30 seconds Intensity: near maximal (85-95%) Activities/sport: 200-400m sprint Muscle fibre type: fast twitch (white), but some red fibres Fitness tests: push ups, sit ups Speed of muscle contraction: rapid Fatigue: fast
Aerobic Component of fitness, time of effectiveness, intensity, activities or sports, muscle fibre type, fitness tests, speed of muscle contraction, and fatigue
Component of fitness: cardio respiratory endurance Time of effectiveness: 30+ seconds Intensity: sub maximal (less than 85%) Activities/sport: long duration activities, marathon runner, footballer Muscle fibre type: slow twitch (red) Fitness tests: 12 min run, beep test Speed of muscle contraction: slow Fatigue: slow
What fuels are used in the energy system?
Carbohydrates, fats and proteins (last resort)
What is the role of ATP?
To provide energy to the muscles
Explain lactic acid
Used when little amount of oxygen is needed in the body. It if for height intensity sports
What are by-products of each energy system?
ATP-nil Lactic acid- sore legs Aerobic-water
What is the predominant fuel at low intensity?
Carbohydrates
How many systems can work at once?
All of the three systems can work at once
Explain the interaction between the three systems
Through interplay. When all systems work together but at different intensities
Which system benefits the most from training?
All systems are trainable, but mainly the aerobic system
What does food equal
Energy (ATP)
Which of the systems is oxygen required
ATP- no Lactic acid- no Aerobic- yes
How much PC is stored in muscles
1 second