Question

In hurdle race, what is major source of energy to leg muscle?

• A. Preformed ATP
• B. Oxidative metabolism
• C. Pyruvate and lactate
• D. Glycolysis

Answer 1

The correct option is B Oxidative metabolism

• In the hurdle race, a person requires energy production faster than our bodies can adequately deliver oxygen.
• In those cases, the working muscles generate energy anaerobically. This energy comes from glucose through a process called glycolysis, in which glucose is broken down or metabolized into a substance called pyruvate through a series of steps.
• When oxygen is limited, the body temporarily converts pyruvate into a substance called lactate, which allows glucose breakdown and thus energy production to continue.
• The working muscle cells can continue this type of anaerobic energy production at high rates for one to three minutes, during which lactate can accumulate to high levels.

Hence, In the hurdle race, Oxidative metabolism is a major source of energy to the leg muscle.

So, the correct answer is 'Oxidative metabolism'.