In the article, “Cardiopulmonary exercise testing: A contemporary and versatile clinical tool” (Leclerc K, Cleve Clin J Med 2017; 84:161–168), an error occurred in Table 1. Heart rate reserve was defined as maximum heart rate minus resting heart rate. It should be defined as (maximum heart rate minus resting heart rate) divided by (predicted maximum heart rate minus resting heart rate).
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