Physical exertion executed without oxygen is designated as______________________?
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Answer: B. Anaerobic
Explanation
Anaerobic exercise refers specifically to high-intensity physical exertion performed without oxygen delivery. Energy during these short bursts comes from immediate phosphocreatine and glycolytic cellular pathways. The absence of direct oxygen utilization distinguishes anaerobic metabolism from aerobic pathways. Energy systems in human muscle cells adapt depending on the duration and intensity of exercise. Anaerobic pathways produce rapid energy but result in metabolic byproduct accumulation like lactate. Exercise physiology categorizes metabolic demands into aerobic and anaerobic energy systems.
Weightlifting and heavy resistance training rely almost entirely on anaerobic energy metabolism. 100-meter sprinters rely on anaerobic pathways because the race finishes before oxygen can be utilized. Training these systems improves an athlete's ability to tolerate high-intensity effort and fatigue. Aerobic exercise requires a continuous supply of oxygen to generate sustained energy for endurance. ADP stands for adenosine diphosphate, which is a cellular molecule rather than an exercise type. ATP stands for adenosine triphosphate, representing cellular energy rather than an exertion category.
- Subject
- Physical Education
- Category
- Physical Education
- Topic
- —
- Difficulty
- medium
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