Final answer:
During moderate exercise, both tidal volume and breathing rate increase compared to normal values to meet the body's oxygen demand. However, without specific values, it's impossible to determine which increased more significantly during exercise.
Step-by-step explanation:
The question asks whether the tidal volume (TV) or breathing rate increased more during moderate exercise, in comparison to their normal values. Tidal volume refers to the amount of air inspired and expired during normal breathing. The alveolar ventilation can be adjusted by changing either the respiratory rate or tidal volume. If alveolar ventilation is too low, the respiratory rate can increase and the volume of air per breath can decrease; conversely, if ventilation is high, both the respiratory rate and the volume of air per breath increase.
During moderate exercise, both the tidal volume and respiratory rate increase to meet the oxygen demand of the muscles. This is reflected in the provided information as it indicates that during high ventilation, which occurs during exercise, both the respiratory rate and the volume of air per breath are increased. Therefore, it is likely that both these factors increased, but without specific data, it's difficult to say which increased more.