Which of the following is a benefit seen in the respiratory system with exercise?

When considering the benefits of exercise on the respiratory system, an increase in vital capacity is indeed a notable effect. Vital capacity, which refers to the maximum amount of air a person can expel from the lungs after a maximum inhalation, tends to improve with regular aerobic exercise. This improvement occurs because the lungs and respiratory muscles become more efficient due to the increased demand for oxygen and ventilation during physical activity. Enhanced vital capacity supports better oxygen exchange, which is crucial for overall physical performance and endurance.

Additionally, exercise often leads to a decrease in breaths per minute for trained individuals at rest. This is due to improved efficiency of the respiratory system and a greater tidal volume – the amount of air inhaled or exhaled in a single breath – that allows for adequate oxygen uptake with fewer breaths.

Therefore, while an increase in vital capacity is clearly advantageous, the context of decreased breathing rate also contributes to improved respiratory efficiency, particularly for those who are physically conditioned. This makes the understanding of respiratory adaptations during exercise integral to creating appropriate training programs for seniors aiming for enhanced fitness and respiratory health.