Which of the following contributes to developing cardiovascular endurance?

High-intensity interval training (HIIT) is specifically designed to improve cardiovascular endurance. This training method involves alternating periods of intense exercise with short rest or low-intensity activity. The bursts of high-intensity efforts elicit a significant cardiovascular response, leading to improved heart function and oxygen delivery throughout the body. This type of training can enhance the efficiency of the heart and lungs, leading to greater endurance during sustained activities.

In contrast, while strength training focuses primarily on building muscle and may contribute to endurance in a different context, it does not primarily target cardiovascular fitness. Yoga and Pilates, on the other hand, often emphasize flexibility, balance, and core strength rather than cardiovascular endurance as the main focus. Therefore, high-intensity interval training stands out as the method that most effectively develops cardiovascular endurance among the options available.