Cardiorespiratory fitness is influenced by which of the following factors?

Cardiorespiratory fitness is significantly influenced by activity level and lifestyle choices because these factors directly affect how efficiently the body can supply and use oxygen during physical activity. Regular physical activity, such as aerobic exercises like running, swimming, or cycling, enhances the efficiency of the cardiovascular and respiratory systems. It strengthens the heart muscle, improves lung capacity, and increases stamina and endurance.

Lifestyle choices, such as smoking, drinking, and the overall health of an individual, play a pivotal role as well. For example, individuals who maintain an active lifestyle and make healthier choices, such as eating a balanced diet and managing stress, typically exhibit better cardiorespiratory fitness.

While diet, age, and genetics can play roles in overall health and fitness levels, they do not have as direct and immediate an impact on cardiorespiratory fitness as consistent physical activity and lifestyle choices do. Age can influence fitness levels, but it does not solely determine them, nor can genetics alone dictate a person’s fitness without considering the effects of physical activity and lifestyle.