Implications of Cardio-Respiratory Fitness on the Performance of Exercise Tests.

In 2016, the American Heart Association (AHA) produced a position paper on cardiorespiratory fitness (CRF) which defined CRF as the most important cardiac risk factor in the assessment of prognosis in a wide variety of clinical states [1]. The aim of the paper was to improve patient management and to encourage life-style based strategies designed to improve cardiovascular risk. The authors showed that: In this Brief Communication, we expand on how CRF can be assessed and reported in exercise testing.