Final answer:
The ventilatory threshold can be used to estimate the Respiratory Quotient (RQ) as well as Metabolic Rate, indicating the type of fuel being metabolized and the overall energy expenditure. It also relates to pulmonary function measures such as FEV and FVC, providing insights into respiratory fitness and efficiency.
Step-by-step explanation:
The ventilatory threshold, which is a measure often used to gauge cardiovascular fitness, can also be used to estimate the Respiratory Quotient (RQ). RQ provides insights into the type of substrate being metabolized for energy during exercise, such as carbohydrates or fats. It is calculated by the ratio of carbon dioxide produced to oxygen consumed. Another important cardiorespiratory measure that can be derived is the Metabolic Rate, which gives an understanding of energy expenditure. Additionally, ventilatory threshold can indirectly relate to pulmonary function measures like Forced Expiratory Volume (FEV) and Forced Vital Capacity (FVC) which illustrate lung function efficiency during physical activity.
Understanding the relationship between ventilatory threshold and these measures can help in assessing a person's cardiorespiratory fitness level and metabolic efficiency. Functional Residual Capacity (FRC), the volume of air remaining in the lungs after a normal exhalation, can also be assessed to give further insight into lung capacity and respiratory health.