Reference Values for Chronotropic Index from 1280 Incremental Cycle Ergometry Tests

• Published in: Medicine and science in sports and exercise Vol. 52; no. 12; p. 2515
• Main Authors: Sirichana, Worawan, Neufeld, Eric V, Wang, Xiaoyan, Hu, Scott B, Dolezal, Brett A, Cooper, Christopher B
• Format: Journal Article
• Language: English
• Published: United States 01.12.2020
• Subjects: Adult; Age Factors; Aged; Aged, 80 and over; Body Height; Body Weight; Databases, Factual - statistics & numerical data; Exercise Test - statistics & numerical data; Female; Heart Rate - physiology; Humans; Male; Middle Aged; Non-Smokers; Oxygen Consumption - physiology; Reference Values; Retrospective Studies; Sex Factors; Smokers; Young Adult

Clinical cardiopulmonary exercise testing can determine causes of exercise limitation. The slope of heart rate (fC) versus oxygen uptake (V˙O2), which we call the chronotropic index (CI), can help identify cardiovascular impairment. We aimed to develop a reference equation for CI based on a large nu...