★ Cardiorespiratory System Quiz
Which energy producing system in the muscles is more powerful for quick, short bursts of energy?
A. Aerobic
B. Anaerobic
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What is the recommended frequency, intensity, and time to improve cardiorespiratory endurance?
A. 3-5 days/week, 51-65% max heart rate, 45 minutes/workout
B. 3-5 days/week, 51-65% max heart rate, 60 minutes/ workout
C. 5-7 days/week, 51-65% max heart rate, 45 minutes/workout
D. 5-7 days/week, 66-85% max heart rate, 60+ minutes/workout
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