Exercise Physiology | What is Supramaximal Exercise?

The video explains supramaximal exercise, which involves exercising at a VO2-max greater than 100%. It covers the concepts of VO2 and VO2-max, detailing how oxygen is consumed in cells, particularly in muscles. The video discusses the relationship between exercise intensity and oxygen needs, explaining that as intensity increases, so does the demand for oxygen. It also explores how anaerobic systems provide additional energy when exercising beyond VO2-max, leading to lactate production and muscle fatigue. A graph is used to illustrate the different VO2 levels and the role of aerobic and anaerobic systems.

What is the definition of supramaximal exercise?

• Exercise performed at a VO2-max less than 100%

• Exercise performed at a VO2-max equal to 100%

• Exercise performed at a VO2-max greater than 100%

• Exercise performed without oxygen consumption

Which process converts glucose to pyruvate in the cytoplasm?

• Photosynthesis

• Glycolysis

• Krebs cycle

• Electron transport chain

What happens to the rate of oxygen consumption as exercise intensity increases?

• It increases

• It remains constant

• It decreases

• It fluctuates randomly

What is the maximum rate at which cells can consume oxygen called?

• VO2-min

• VO2-max

• VO2-average

• VO2-optimal

What is the primary energy system used when exercising beyond VO2-max?

• Hydrolysis system

• Anaerobic system

• Aerobic system

• Photosynthetic system

What is the role of lactate dehydrogenase in anaerobic metabolism?

• Converts lactate to glucose

• Converts pyruvate to lactate

• Converts ATP to ADP

• Converts oxygen to water

Why is exercising beyond 100% VO2-max not sustainable for long periods?

• It causes rapid muscle fatigue due to lactate production

• It requires too much oxygen

• It increases aerobic capacity

• It depletes glucose reserves