Question

explain second wind and oxygen debt​

Answer 1

Second Wind is a person's ability to recover and breathe freely during exercise, especially after have been tired and out of breath.

Oxygen debt means the shortage of oxygen faced by body tissues, as a result of strenuous activity. Athletes normally go through phases of Oxygen Debt, during training and competition.

Answer 2

❥Question ⤵

• ❥Explain second wind and oxygen debt.

❥Answer ⤵

❥Second wind :

❥The breathlessness caused due to prolonged exercise is removed automatically by our body within short span of time of such exercise. This sense of relief is called 'second wind'.

❥Causes of second wind:

When we perform strenuous exercise, our body takes some time to adjust according to the increased demand of energy. So, the second wind occurs before the adjustment.

❥Symptoms of second wind:

• Faster breathing
• Signs of tension and worry on the face
• Headache
• Suffocation in the chest appears
• Pain in muscles
• Condition of giddiness appears. These painful feelings disappear with the onset of second wind.

❥Oxygen debt :

❥Oxygen debt is a temporary oxygen shortage in the body tissues arising from exercise.

• During muscular exercise, blood vessels in muscles dilate and blood flow is increased in order to increase the available oxygen supply.

• Up to a point, the available oxygen is sufficient to meet the energy needs of the body.

• ❥However, when muscular exertion is very great, oxygen cannot be supplied to the muscle fibres fast enough.

• During such periods, additional ATP is generated by anaerobic glycolysis.

• ❥Here, the pyruvic acid is converted to lactic acid, which is transported to the liver to be converted into glucose or glycogen.

• ❥Once, adequate oxygen is available, lactic acid must be catabolized completely into carbon dioxide and water.

• ❥After exercise has stopped, extra oxygen is required to metabolize lactic acid, replenish ATP, phosphocreatine, and glycogen.

• ❥This additional oxygen that must be taken into the body after vigorous exercise to restore all systems to their normal states is oxygen debt.

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