A 23-Year-Old Man Undergoes Exercise Physiology Testing at Sea Level

question 189

Multiple Choice

A 23-year-old man undergoes exercise physiology testing at sea level.  He jogs on a treadmill to achieve a moderate-intensity physical activity level based on a target heart rate of 50%-70% of his estimated maximum heart rate.  An increase in which of the following is expected at the peak of his exertion?

• A)Arterial blood mean CO₂ content
• B)Arterial blood mean O₂ content
• C)Hemoglobin affinity for O₂
• D)pH of the arterial blood
• E)Physiologic dead space
• F)Venous blood mean CO₂ content
• G)Venous blood mean O₂ content

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Definitions:

Effectiveness

The degree to which a method or treatment achieves its intended outcomes under typical, real-world conditions.

Efficiency

The ability to achieve a desired outcome with the least waste of time, effort, or resources.

Psychotherapy

The treatment of mental disorder or emotional challenges through psychological rather than medical means, involving various therapeutic techniques.

Brain Function

The activities carried out by the brain that enable mental operations, including thought, emotion, and behavior.