What Is Cardiovascular Health?

We all remember our days in gym class of running laps and climbing ropes. We treasured playing dodge ball and running under a giant parachute. Aside from delighting our childlike desire to play, these activities were designed to accomplish an important purpose. Gym class and sports practices were developed to get our hearts pumping and to improve our cardiovascular endurance.

What is cardiovascular endurance?
Cardiovascular training involves exercises that recruit both our cardiovascular and respiratory systems. When you think of activities that cause your heart to beat faster or you to breathe rapidly, these are activities that improve your cardiovascular endurance. Cardiovascular training is often referred to simply as "cardio" or "aerobic" training and includes exercises such as cycling, running, walking, and swimming.

Why is cardiovascular endurance important?
Cardiovascular training engages both your cardiovascular and respiratory systems, or more simply, your heart and your lungs. Stressing these systems and organs through exercising teaches them to become stronger and more efficient. For example, the stroke volume (amount of blood that is ejected in one heart beat) of a trained athlete will be much higher than the stroke volume for an untrained individual. As a result, a trained athlete's heart at rest will be required to beat fewer times per minute than an untrained individual's. Improving the efficiency of these systems allows the body to maintain health with less strain and difficulty.

How do we measure cardiovascular endurance?
While many activities are outstanding methods to improve cardiovascular health, measuring the intensity of these activities is an important way to assess both effectiveness and improvement. The American College of Sports Medicine (ACSM) recommends that individuals train between 64 – 94% of their maximal heart rate to improve health and endurance.