What is meant by cardiovascular endurance?

Cardiovascular endurance refers to the capacity of the heart, lungs, and circulatory system to efficiently deliver oxygen to the working muscles during prolonged physical activity. It indicates how well these systems work together to sustain an activity over an extended period, such as running, swimming, or cycling. This endurance is critical for overall fitness levels and can enhance performance in various sports and daily activities. Moreover, improved cardiovascular endurance is associated with better health outcomes, including reduced risk of chronic diseases and improved mental well-being.

The other options do not accurately define cardiovascular endurance. The strength of the heart muscles during contraction pertains more to muscular strength than endurance. Maximum heart rate reflects an individual's peak exertion level rather than their ongoing capacity to sustain activity. The resting heart rate indicates heart function at rest but does not relate to the ability to endure extended physical effort.