Association Between Cardiorespiratory Fitness and a Composite Index of Cardiac Autonomic Control: Potential Implications for Exercise Training Evaluation
Background/Objectives: Cardiorespiratory fitness (CRF), measured as VO2peak during cardiopulmonary exercise testing (CPX), represents a fundamental marker of cardiovascular health. Heart Rate Variability (HRV) assesses cardiac autonomic regulation (CAR) non-invasively, though technical issues limit clinical use. Combin...