True or false: Ventilation can increase by 20-30 times resting values during strenuous exercise.

Ventilation, which refers to the movement of air in and out of the lungs, can indeed increase significantly during strenuous exercise. Under these conditions, the body requires a greater amount of oxygen and needs to expel more carbon dioxide to meet the metabolic demands of the working muscles. Research indicates that during intense physical activity, ventilation can increase by 20 to 30 times resting values in some individuals, facilitating the necessary gas exchange to sustain prolonged effort.

This increase is particularly pronounced in response to high-intensity demands and is a natural physiological adaptation to enhance performance. Such a mechanism ensures that the body maintains aerobic metabolism and prevents the accumulation of lactic acid, which could otherwise lead to fatigue. It should also be noted that while this is a general observation, individual responses can vary based on factors such as fitness level, training background, and specific exercise intensity.

The other options refer to specific conditions or exceptions that are not universally applicable across all individuals during strenuous exercise. Ventilation adjustments are a normal response to aerobic demands, and therefore, they can occur regardless of an individual's status as an elite athlete or the duration of exercise.