Q:

The maximum possible metabolic rate during exercise is

safaTerkawi
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2022-08-19
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 The maximum possible metabolic rate during exercise is.

  1. Reached when the blood lactate level starts to fall.
  2. Reached when the respiratory exchange ratio starts to fall.
  3. . Reached when ventilation reaches the maximum breathing capacity.
  4. Reduced by about half if the haemoglobin level falls by half.
  5. About 50 times the resting rate in an athlete.
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safaTerkawi
2022-08-19
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A. False The lactate level keeps rising with increasing severity of exercise.

B. False Increasing lactate acid increases ventilatory elimination of CO2; a rising respira-tory exchange ratio suggests that exercise is approaching maximal.

C. False The level of ventilation in exercise does not reach the maximum breathing capac-ity.

D. True Oxygen delivery depends crucially on the haemoglobin level.

E. False The limit is about half of this.

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