Week 7

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1 point

VO2 max measures what?

amount of carbohydrates in grams, one can use in one minute per kilogram of body weight

All of the above

amount of oxygen in millilitres, one can use in one minute per kilogram of body weight

amount of lactate in millilitres, one can produce in one minute per kilogram of body weight

1 point

Increased level of plasma will assist in:

Transportation of O2

Transporting CO2

Processing lactate

Temperature regulation

1 point

The increased cavity size of the left ventricle in a trained athlete will cause what adaptation?

Increased stroke volume

Increased heart rate

Increased tidal volume

Decreased cadiac output

1 point

Decreased blood pressure is due to:

Capillarisation of the heart and muscles and enhanced elasticity of arteries

Increased ability to diffuse O2

Increased capillaries

Thinning of the blood and increased number of capillaries

1 point

Tidal volume is:

Volume of O2 used by the body in one minute

Volume of CO2 expired in one breath

Volume of air inspired and expired in one minute

Volume of air inspired and expired in one breath

1 point

Heart rate in a trained athlete is decreased because:

Increased stroke volume

Increased contractility of the myocardium

Increased size of the left ventricle

All of the ablove

1 point

A trained athlete will have an increased pulmonary diffusing capacity. This is due to:

All of the above

Increased number of alveloi used

Greater amount of capillaries and alveoli

Greater volume of gas diffused through the alveoli membrane

1 point

An increase in the concentration of haemoglobin in the blood will result in:

More efficient transportation of O2 around the body

Increase the level of plasma

Prevents clotting

Increased heart rate

1 point

Cardiac output can be calculated by:

Stroke volume x respiratory rate

Heart rate x tidal volume

Stroke volume / heart rate

Heart rate x stroke volume

10.

1 point

Decreased ventilation at rest suggests that:

Has a decreased lung capacity

Has a decreased tidal volume

An athlete has a more efficient gas exchange

Is able to more efficiently process lactate

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