ACSM Personal Trainer Certification Practice Exam

What type of exercise primarily relies on anaerobic metabolism?

1. Long-distance running

2. Weight lifting

3. Yoga

4. Walking

The correct answer is: Weight lifting

Weight lifting primarily relies on anaerobic metabolism because it involves short bursts of high-intensity effort that exceed the capacity of the cardiovascular system to supply oxygen rapidly. During these intense, short-duration activities, the body relies on energy sources stored in the muscles, such as creatine phosphate and glycogen, rather than using oxygen to produce energy, which characterizes anaerobic metabolism. This metabolic pathway is essential in providing the energy needed for quick, explosive movements involved in weight lifting. In contrast, activities like long-distance running, yoga, and walking typically use aerobic metabolism, as they are performed at a moderate intensity for longer durations, allowing the body to supply adequate oxygen for energy production.