The J-Shaped Relationship Between the Intensity of Exercise and the Risk

question 7

Multiple Choice

The J-shaped relationship between the intensity of exercise and the risk of URTI suggests that the risk URTI is lowest in people who

• A)are sedentary.
• B)engage in moderate exercise.
• C)engage in vigorous exercise.
• D)none of the above answers are correct

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Definitions:

Mechanism

A mechanism is a description of the step-by-step process by which reactants are transformed into products in a chemical reaction, including the intermediate stages and transition states.

Anionic Nucleophiles

Negatively charged species that donate an electron pair to electrophiles in chemical reactions.

Polar, Aprotic Solvents

Solvents that possess a dipole but do not have an acidic hydrogen, often used in organic synthesis.

Nucleophilicity

A property of chemical species that reflects their tendency or ability to donate an electron pair to an electrophile to form a chemical bond.