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WorksheetsMuscle Fibers and Energy Systems Check
Total questions: 10
Worksheet time: 5mins
Which type of muscle fiber is primarily used for endurance activities such as long-distance running?
Type I
Type IIa
Type IIb
Type III
What is the primary energy system used during a 100-meter sprint?
Aerobic
Anaerobic Glycolysis
Phosphagen (ATP-PCr)
Oxidative
Explain the difference between aerobic and anaerobic exercise in terms of oxygen usage.
Aerobic exercise requires oxygen, while anaerobic exercise does not.
Anaerobic exercise requires oxygen, while aerobic exercise does not.
Both require oxygen equally.
Neither requires oxygen.
Which muscle fiber type is most likely to be recruited during a high-intensity, short-duration activity like weightlifting?
Type I
Type IIa
Type IIx or IIb
Type III
How does the energy system used in a marathon differ from that used in a 400-meter sprint?
Marathon uses the phosphagen system, while the sprint uses the aerobic system.
Marathon uses the aerobic system, while the sprint uses the anaerobic glycolysis system.
Both use the anaerobic glycolysis system.
Both use the phosphagen system.
Analyze how muscle fiber recruitment changes as exercise intensity increases.
Type I fibers are recruited first, followed by Type IIa, and then Type IIb as intensity increases.
Type IIb fibers are recruited first, followed by Type IIa, and then Type I as intensity increases.
All fiber types are recruited simultaneously regardless of intensity.
Only Type I fibers are recruited regardless of intensity.
Which factor is least likely to affect sports performance?
Muscle fiber type distribution
Weather conditions
Shoe color
Energy system efficiency
Describe how the phosphagen energy system contributes to sports performance.
It provides energy for long-duration, low-intensity activities.
It provides immediate energy for short-duration, high-intensity activities.
It is the primary energy source for endurance sports.
It is not used in sports performance.
Which energy system is predominantly used during a soccer match?
Phosphagen
Anaerobic Glycolysis
Aerobic
None of the above
The red muscle fibre is also termed as (remember: what muscle fiber type requires more oxygen!)
fast-twitch muscles
Slow-twitch muscles
both a & b
none of these
